NSA/C1 data loss due to cut fiber optic cable

The fiber optic line connecting the MET TWR to the data collection
facility was accidentally cut during snow removal.  Data are 
unrecoverable.

• Precipitation rate(precip_rate)
• one Minute Visibility(one_minute_visibility)
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• Ten Minute PW code out of range error(ten_min_pw_code_out_of_range_error)
• One Minute PW code \\(WMO SYNOP code\\)(one_minute_PW_code)
• One Minute PW code out of range error(one_min_pw_code_out_of_range_error)
• Present Weather Sensor Read Timeout Error(pws_read_timeout_error)
• lon(lon)
• Dummy altitude for Zeb(alt)
• One Hour PW code \\(WMO SYNOP code\\)(one_hour_PW_code)
• Present Weather Sensor Serial Error(pws_serial_error)
• One Hour PW code out of range error(one_hour_pw_code_out_of_range_error)
• Cumulative Snow out of range error(cumul_snow_out_of_range_error)
• Ten Minute Visibility(ten_minute_visibility)
• Ten Minute PW code \\(WMO SYNOP code\\)(ten_minute_PW_code)
• Ten Minute Visibility out of range error(ten_minute_vis_out_of_range_error)
• Cumulative Snow(cumulative_snow)
• GPS raw data filename(filename)
• Time offset of tweaks from base_time(time_offset)
• Liquid Water Equivalent out of range error(cumul_liq_water_equiv_out_of_range_err)
• lat(lat)
• One Minute Visibility out of range error(one_minute_vis_out_of_range_error)
• NWS code(present_weather_sensor_NWS_code)
• PWS Precipitation Rate out of range error(precip_rate_out_of_range_error)
• base time(base_time)

• Barometric Pressure(atmos_pressure)
• Maximum Wind Direction(wind_dir_max)
• Mean Vapor Pressure(vap_pres_mean)
• Dummy altitude for Zeb(alt)
• Std Dev of Wind Speed(wind_spd_sd)
• Maximum Vapor Pressure(vap_pres_max)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• base time(base_time)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• lon(lon)
• Wind Speed out of range error(win_spd_out_of_range_error)
• Air Temperature out of range error(temp_out_of_range_error)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Air Temperature Hardware Error(temp_hardware_error)
• GPS raw data filename(filename)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Temperature minimum(temp_min)
• Temperature maximum(temp_max)
• Relative humidity maximum(relh_max)
• Time offset of tweaks from base_time(time_offset)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• Wind Direction out of range error(win_dir_out_of_range_error)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Relative humidity minimum(relh_min)
• Internal Temperature out of range error(internal_temp_out_of_range_error)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Out of Range Error(atmos_pressure_out_of_range_error)
• Minimum Wind Speed(wind_spd_min)
• Std Dev of Wind Direction(wind_dir_sd)
• Mean Wind Speed(wind_spd_mean)
• Std Dev of Air Temperature(temp_sd)
• Minimum Wind Direction(wind_dir_min)
• Relative Humidity out of range error(relh_out_of_range_error)
• Read Timeout Error(atmos_pressure_read_timeout_error)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Number of timeouts reading the met tower data by height(read_timeout_count)
• Mean Air Temperature or Hardware Error(temp_mean)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Minimum Vapor Pressure(vap_pres_min)
• Mean Relative Humidity(relh_mean)
• Maximum Wind Speed(wind_spd_max)
• lat(lat)
• Internal Voltage out of range error(internal_voltage_out_of_range_error)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)

• ORG No Data Error(precip_no_data_error)
• base time(base_time)
• ORG Read Timeout Error(precip_read_timeout_error)
• NWS code(precip_NWS_code)
• lat(lat)
• Daily Accumulation out of range error(precip_out_of_range_error)
• Precipitation rate(precip_rate)
• Dummy altitude for Zeb(alt)
• Daily Accumulation(precip_daily_accum)
• ORG Serial Error(precip_serial_error)
• lon(lon)
• Time offset of tweaks from base_time(time_offset)
• GPS raw data filename(filename)

NSA/PWS/C1 - Present Weather Sensor Calibration/Checks

During the listed period the Barrow Present Weather Sensor was being
checked and calibrated and the data was incorrect.  The calibration was off more than 3% 
previous to the re-calibration.

• Ten Minute PW code out of range error(ten_min_pw_code_out_of_range_error)
• Precipitation rate(precip_rate)
• One Minute Visibility out of range error(one_minute_vis_out_of_range_error)
• One Minute PW code out of range error(one_min_pw_code_out_of_range_error)
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• One Hour PW code out of range error(one_hour_pw_code_out_of_range_error)
• Cumulative Snow out of range error(cumul_snow_out_of_range_error)
• Ten Minute Visibility(ten_minute_visibility)
• Liquid Water Equivalent out of range error(cumul_liq_water_equiv_out_of_range_err)
• one Minute Visibility(one_minute_visibility)
• Cumulative Snow(cumulative_snow)
• PWS Precipitation Rate out of range error(precip_rate_out_of_range_error)
• Ten Minute Visibility out of range error(ten_minute_vis_out_of_range_error)

• Ten Minute Visibility(ten_minute_visibility)
• one Minute Visibility(one_minute_visibility)
• Cumulative Snow out of range error(cumul_snow_out_of_range_error)
• Ten Minute Visibility out of range error(ten_minute_vis_out_of_range_error)
• Cumulative Snow(cumulative_snow)
• One Minute PW code out of range error(one_min_pw_code_out_of_range_error)
• Liquid Water Equivalent out of range error(cumul_liq_water_equiv_out_of_range_err)
• One Minute Visibility out of range error(one_minute_vis_out_of_range_error)
• One Hour PW code out of range error(one_hour_pw_code_out_of_range_error)
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• Precipitation rate(precip_rate)
• Ten Minute PW code out of range error(ten_min_pw_code_out_of_range_error)
• PWS Precipitation Rate out of range error(precip_rate_out_of_range_error)

NSA/METTWR/C1 - Met Tower Data Incorrect During Calibrations/Changeouts

Met Tower Data was incorrect during this period while sensor changeouts and calibrations 
were accomplished.

• Maximum Wind Direction(wind_dir_max)
• Mean Vapor Pressure(vap_pres_mean)
• Std Dev of Wind Speed(wind_spd_sd)
• Maximum Vapor Pressure(vap_pres_max)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Wind Speed out of range error(win_spd_out_of_range_error)
• Air Temperature out of range error(temp_out_of_range_error)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Air Temperature Hardware Error(temp_hardware_error)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Temperature minimum(temp_min)
• Relative humidity maximum(relh_max)
• Temperature maximum(temp_max)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• Wind Direction out of range error(win_dir_out_of_range_error)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Relative humidity minimum(relh_min)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Minimum Wind Speed(wind_spd_min)
• Std Dev of Wind Direction(wind_dir_sd)
• Mean Wind Speed(wind_spd_mean)
• Std Dev of Air Temperature(temp_sd)
• Minimum Wind Direction(wind_dir_min)
• Relative Humidity out of range error(relh_out_of_range_error)
• Mean Air Temperature or Hardware Error(temp_mean)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Minimum Vapor Pressure(vap_pres_min)
• Mean Relative Humidity(relh_mean)
• Maximum Wind Speed(wind_spd_max)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)

• Maximum Wind Speed(wind_spd_max)
• Mean Wind Speed(wind_spd_mean)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Air Temperature Hardware Error(temp_hardware_error)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Temperature maximum(temp_max)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Mean Air Temperature or Hardware Error(temp_mean)
• Mean Relative Humidity(relh_mean)
• Minimum Vapor Pressure(vap_pres_min)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Temperature minimum(temp_min)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Std Dev of Wind Speed(wind_spd_sd)
• Air Temperature out of range error(temp_out_of_range_error)
• Maximum Vapor Pressure(vap_pres_max)
• Maximum Wind Direction(wind_dir_max)
• Minimum Wind Direction(wind_dir_min)
• Minimum Wind Speed(wind_spd_min)
• Wind Direction out of range error(wind_dir_out_of_range_error)
• Relative Humidity out of range error(relh_out_of_range_error)
• Relative humidity maximum(relh_max)
• Relative humidity minimum(relh_min)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)
• Wind Speed out of range error(wind_spd_out_of_range_error)
• Std Dev of Air Temperature(temp_sd)
• Mean Vapor Pressure(vap_pres_mean)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Std Dev of Wind Direction(wind_dir_sd)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Maximum Dew Point Temperature(dew_pt_temp_max)

NSA/PWS/C1 - Calibration drift

The calibration of the sensor drifted downwards slightly more than 3% during the more than 
two years in between calibrations.  The drift had no significant impact on the data 
produced.  Note: the period of this DQR extends back prior to 20000503 when the datastream 
was named nsapwsC1.a0.

• Cumulative Snow(cumulative_snow)
• Ten Minute Visibility(ten_minute_visibility)
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• Precipitation rate(precip_rate)
• one Minute Visibility(one_minute_visibility)

NSA/METTWR/C1 - C1 SPURIOUS INFORMATION IN DATA HEADER

There is an attribute for read_timeout_count that should not be included.  
The affected prtion of the header is: read_timeout_count:details = '0 = no error, 1 = 
error'  
User should disregard this attribute information in the header.

• Number of timeouts reading the met tower data by height(read_timeout_count)

NSA/METTWR/C1 - C1 WIND SPEED DATA QUESTIONABLE

The anemometers located at all 4 levels (2m, 10m, 20m, and 40m) are heated anemometers.  
The thermistors controlling the amount of power applied to the cups of the anemometers 
failed.  This caused too much power to be sent to the heating elements.  The cups bubbled 
and, in some cases, completely melted through.

• Minimum Wind Speed(wind_spd_min)
• Std Dev of Wind Speed(wind_spd_sd)
• Mean Wind Speed(wind_spd_mean)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Maximum Wind Speed(wind_spd_max)

• Maximum Wind Speed(wind_spd_max)
• Wind Speed out of range error(wind_spd_out_of_range_error)
• Mean Wind Speed(wind_spd_mean)
• Std Dev of Wind Speed(wind_spd_sd)
• Minimum Wind Speed(wind_spd_min)
• Vector-averaged Wind Speed(wind_spd_vec_avg)

NSA/METTWR/C1 - C1 WIND DIRECTION DATA SUSPECT

The wind direction sensor at the 10m level and 20m level became frozen.  The senor at the 
10m level became frozen on July 25 2001.  The date that the 20m level became frozen is 
unknown but occurred after the 10m level became frozen.  Both sensors froze in such a way 
as to consistently report wind direction values out of the south.

• Std Dev of Wind Direction(wind_dir_sd)
• Wind Speed out of range error(win_spd_out_of_range_error)
• Minimum Wind Direction(wind_dir_min)
• Maximum Wind Direction(wind_dir_max)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Wind Direction out of range error(win_dir_out_of_range_error)

• Wind Direction out of range error(wind_dir_out_of_range_error)
• Std Dev of Wind Direction(wind_dir_sd)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Maximum Wind Direction(wind_dir_max)
• Minimum Wind Direction(wind_dir_min)

NSA/METTWRC1 - METTWRCQ DATA REPORTED AS -9999

Due to local power outages caused by winter storms, the Bridgeview collection program 
became corrupted.  All tower data and associated instruments on the tower reported as -9999.

• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• Ten Minute Visibility(ten_minute_visibility)
• NWS code(present_weather_sensor_NWS_code)
• Precipitation rate(precip_rate)
• One Minute PW code out of range error(one_min_pw_code_out_of_range_error)
• Cumulative Snow out of range error(cumul_snow_out_of_range_error)
• One Minute PW code \\(WMO SYNOP code\\)(one_minute_PW_code)
• one Minute Visibility(one_minute_visibility)
• Ten Minute Visibility out of range error(ten_minute_vis_out_of_range_error)
• One Hour PW code \\(WMO SYNOP code\\)(one_hour_PW_code)
• One Minute Visibility out of range error(one_minute_vis_out_of_range_error)
• One Hour PW code out of range error(one_hour_pw_code_out_of_range_error)
• Ten Minute PW code \\(WMO SYNOP code\\)(ten_minute_PW_code)
• Liquid Water Equivalent out of range error(cumul_liq_water_equiv_out_of_range_err)
• PWS Precipitation Rate out of range error(precip_rate_out_of_range_error)
• Ten Minute PW code out of range error(ten_min_pw_code_out_of_range_error)
• Present Weather Sensor Read Timeout Error(pws_read_timeout_error)
• Present Weather Sensor Serial Error(pws_serial_error)
• Cumulative Snow(cumulative_snow)

• Maximum Vapor Pressure(vap_pres_max)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Wind Speed out of range error(win_spd_out_of_range_error)
• Air Temperature out of range error(temp_out_of_range_error)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Air Temperature Hardware Error(temp_hardware_error)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Wind Direction out of range error(win_dir_out_of_range_error)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Relative humidity minimum(relh_min)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Minimum Wind Speed(wind_spd_min)
• Std Dev of Wind Direction(wind_dir_sd)
• Std Dev of Air Temperature(temp_sd)
• Relative Humidity out of range error(relh_out_of_range_error)
• Read Timeout Error(atmos_pressure_read_timeout_error)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Mean Air Temperature or Hardware Error(temp_mean)
• Serial Port Error(serial_port_error)
• Maximum Wind Speed(wind_spd_max)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)
• Barometric Pressure(atmos_pressure)
• Maximum Wind Direction(wind_dir_max)
• Mean Vapor Pressure(vap_pres_mean)
• Std Dev of Wind Speed(wind_spd_sd)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Temperature minimum(temp_min)
• Temperature maximum(temp_max)
• Relative humidity maximum(relh_max)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Internal Temperature out of range error(internal_temp_out_of_range_error)
• Out of Range Error(atmos_pressure_out_of_range_error)
• Mean Wind Speed(wind_spd_mean)
• Minimum Wind Direction(wind_dir_min)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Minimum Vapor Pressure(vap_pres_min)
• Mean Relative Humidity(relh_mean)
• Internal Voltage out of range error(internal_voltage_out_of_range_error)

• Ten Minute Visibility(ten_minute_visibility)
• One Minute PW code out of range error(one_min_pw_code_out_of_range_error)
• One Minute Visibility out of range error(one_minute_vis_out_of_range_error)
• One Hour PW code out of range error(one_hour_pw_code_out_of_range_error)
• Present Weather Sensor Serial Error(pws_serial_error)
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• Precipitation rate(precip_rate)
• Ten Minute Visibility out of range error(ten_minute_vis_out_of_range_error)
• One Hour PW code \\(WMO SYNOP code\\)(one_hour_PW_code)
• PWS Precipitation Rate out of range error(precip_rate_out_of_range_error)
• one Minute Visibility(one_minute_visibility)
• Cumulative Snow(cumulative_snow)
• Liquid Water Equivalent out of range error(cumul_liq_water_equiv_out_of_range_err)
• Ten Minute PW code out of range error(ten_min_pw_code_out_of_range_error)
• Present Weather Sensor Read Timeout Error(pws_read_timeout_error)
• Cumulative Snow out of range error(cumul_snow_out_of_range_error)
• NWS code(present_weather_sensor_NWS_code)
• Ten Minute PW code \\(WMO SYNOP code\\)(ten_minute_PW_code)
• One Minute PW code \\(WMO SYNOP code\\)(one_minute_PW_code)

• Maximum Wind Speed(wind_spd_max)
• Mean Wind Speed(wind_spd_mean)
• Air Temperature Hardware Error(temp_hardware_error)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Mean Air Temperature or Hardware Error(temp_mean)
• Mean Relative Humidity(relh_mean)
• Out of Range Error(atmos_pressure_out_of_range_error)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Std Dev of Wind Speed(wind_spd_sd)
• Air Temperature out of range error(temp_out_of_range_error)
• Maximum Wind Direction(wind_dir_max)
• Maximum Vapor Pressure(vap_pres_max)
• Minimum Wind Direction(wind_dir_min)
• Minimum Wind Speed(wind_spd_min)
• Wind Direction out of range error(wind_dir_out_of_range_error)
• Internal Temperature out of range error(internal_temp_out_of_range_error)
• Relative humidity maximum(relh_max)
• Relative humidity minimum(relh_min)
• Wind Speed out of range error(wind_spd_out_of_range_error)
• Std Dev of Air Temperature(temp_sd)
• Mean Vapor Pressure(vap_pres_mean)
• Std Dev of Wind Direction(wind_dir_sd)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Internal Voltage out of range error(internal_voltage_out_of_range_error)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Temperature maximum(temp_max)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Minimum Vapor Pressure(vap_pres_min)
• Number of timeouts reading the met tower data by height(read_timeout_count)
• Temperature minimum(temp_min)
• Barometric Pressure(atmos_pressure)
• Relative Humidity out of range error(relh_out_of_range_error)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Read Timeout Error(atmos_pressure_read_timeout_error)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Maximum Dew Point Temperature(dew_pt_temp_max)

• ORG Read Timeout Error(precip_read_timeout_error)
• Precipitation rate(precip_rate)
• ORG Serial Error(precip_serial_error)
• ORG No Data Error(precip_no_data_error)
• NWS code(precip_NWS_code)
• Daily Accumulation out of range error(precip_out_of_range_error)
• Daily Accumulation(precip_daily_accum)

• Daily Accumulation out of range error(precip_out_of_range_error)
• Precipitation rate(precip_rate)
• NWS code(precip_NWS_code)
• Daily Accumulation(precip_daily_accum)
• ORG No Data Error(precip_no_data_error)
• ORG Serial Error(precip_serial_error)
• ORG Read Timeout Error(precip_read_timeout_error)

NSA/METTWRC1 - METTWRC1 NO DATA COLLECTED FROM TOWER

Power outage caused fatal errors in the Bridgeview collection program.  No data was 
ingested from the tower and sensors located on the tower.

• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• Ten Minute Visibility(ten_minute_visibility)
• NWS code(present_weather_sensor_NWS_code)
• Precipitation rate(precip_rate)
• One Minute PW code out of range error(one_min_pw_code_out_of_range_error)
• Cumulative Snow out of range error(cumul_snow_out_of_range_error)
• One Minute PW code \\(WMO SYNOP code\\)(one_minute_PW_code)
• one Minute Visibility(one_minute_visibility)
• Ten Minute Visibility out of range error(ten_minute_vis_out_of_range_error)
• One Hour PW code \\(WMO SYNOP code\\)(one_hour_PW_code)
• One Minute Visibility out of range error(one_minute_vis_out_of_range_error)
• One Hour PW code out of range error(one_hour_pw_code_out_of_range_error)
• Ten Minute PW code \\(WMO SYNOP code\\)(ten_minute_PW_code)
• Liquid Water Equivalent out of range error(cumul_liq_water_equiv_out_of_range_err)
• PWS Precipitation Rate out of range error(precip_rate_out_of_range_error)
• Ten Minute PW code out of range error(ten_min_pw_code_out_of_range_error)
• Present Weather Sensor Read Timeout Error(pws_read_timeout_error)
• Present Weather Sensor Serial Error(pws_serial_error)
• Cumulative Snow(cumulative_snow)

• Maximum Vapor Pressure(vap_pres_max)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Wind Speed out of range error(win_spd_out_of_range_error)
• Air Temperature out of range error(temp_out_of_range_error)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Air Temperature Hardware Error(temp_hardware_error)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Wind Direction out of range error(win_dir_out_of_range_error)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Relative humidity minimum(relh_min)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Minimum Wind Speed(wind_spd_min)
• Std Dev of Wind Direction(wind_dir_sd)
• Std Dev of Air Temperature(temp_sd)
• Relative Humidity out of range error(relh_out_of_range_error)
• Read Timeout Error(atmos_pressure_read_timeout_error)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Mean Air Temperature or Hardware Error(temp_mean)
• Serial Port Error(serial_port_error)
• Maximum Wind Speed(wind_spd_max)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)
• Barometric Pressure(atmos_pressure)
• Maximum Wind Direction(wind_dir_max)
• Mean Vapor Pressure(vap_pres_mean)
• Std Dev of Wind Speed(wind_spd_sd)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Temperature minimum(temp_min)
• Temperature maximum(temp_max)
• Relative humidity maximum(relh_max)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Internal Temperature out of range error(internal_temp_out_of_range_error)
• Out of Range Error(atmos_pressure_out_of_range_error)
• Mean Wind Speed(wind_spd_mean)
• Minimum Wind Direction(wind_dir_min)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Minimum Vapor Pressure(vap_pres_min)
• Mean Relative Humidity(relh_mean)
• Internal Voltage out of range error(internal_voltage_out_of_range_error)

• Ten Minute Visibility(ten_minute_visibility)
• One Minute PW code out of range error(one_min_pw_code_out_of_range_error)
• One Minute Visibility out of range error(one_minute_vis_out_of_range_error)
• One Hour PW code out of range error(one_hour_pw_code_out_of_range_error)
• Present Weather Sensor Serial Error(pws_serial_error)
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• Precipitation rate(precip_rate)
• Ten Minute Visibility out of range error(ten_minute_vis_out_of_range_error)
• One Hour PW code \\(WMO SYNOP code\\)(one_hour_PW_code)
• PWS Precipitation Rate out of range error(precip_rate_out_of_range_error)
• one Minute Visibility(one_minute_visibility)
• Cumulative Snow(cumulative_snow)
• Liquid Water Equivalent out of range error(cumul_liq_water_equiv_out_of_range_err)
• Ten Minute PW code out of range error(ten_min_pw_code_out_of_range_error)
• Present Weather Sensor Read Timeout Error(pws_read_timeout_error)
• Cumulative Snow out of range error(cumul_snow_out_of_range_error)
• NWS code(present_weather_sensor_NWS_code)
• Ten Minute PW code \\(WMO SYNOP code\\)(ten_minute_PW_code)
• One Minute PW code \\(WMO SYNOP code\\)(one_minute_PW_code)

• Maximum Wind Speed(wind_spd_max)
• Mean Wind Speed(wind_spd_mean)
• Air Temperature Hardware Error(temp_hardware_error)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Mean Air Temperature or Hardware Error(temp_mean)
• Mean Relative Humidity(relh_mean)
• Out of Range Error(atmos_pressure_out_of_range_error)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Std Dev of Wind Speed(wind_spd_sd)
• Air Temperature out of range error(temp_out_of_range_error)
• Maximum Wind Direction(wind_dir_max)
• Maximum Vapor Pressure(vap_pres_max)
• Minimum Wind Direction(wind_dir_min)
• Minimum Wind Speed(wind_spd_min)
• Wind Direction out of range error(wind_dir_out_of_range_error)
• Internal Temperature out of range error(internal_temp_out_of_range_error)
• Relative humidity maximum(relh_max)
• Relative humidity minimum(relh_min)
• Wind Speed out of range error(wind_spd_out_of_range_error)
• Std Dev of Air Temperature(temp_sd)
• Mean Vapor Pressure(vap_pres_mean)
• Std Dev of Wind Direction(wind_dir_sd)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Internal Voltage out of range error(internal_voltage_out_of_range_error)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Temperature maximum(temp_max)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Minimum Vapor Pressure(vap_pres_min)
• Number of timeouts reading the met tower data by height(read_timeout_count)
• Temperature minimum(temp_min)
• Barometric Pressure(atmos_pressure)
• Relative Humidity out of range error(relh_out_of_range_error)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Read Timeout Error(atmos_pressure_read_timeout_error)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Maximum Dew Point Temperature(dew_pt_temp_max)

• ORG Read Timeout Error(precip_read_timeout_error)
• Precipitation rate(precip_rate)
• ORG Serial Error(precip_serial_error)
• ORG No Data Error(precip_no_data_error)
• NWS code(precip_NWS_code)
• Daily Accumulation out of range error(precip_out_of_range_error)
• Daily Accumulation(precip_daily_accum)

• Daily Accumulation out of range error(precip_out_of_range_error)
• Precipitation rate(precip_rate)
• NWS code(precip_NWS_code)
• Daily Accumulation(precip_daily_accum)
• ORG No Data Error(precip_no_data_error)
• ORG Serial Error(precip_serial_error)
• ORG Read Timeout Error(precip_read_timeout_error)

NSA/CMH/C2 - Occasional Bad Temp and DP

During the time period indicated, temperature was
occasionally incorrectly reported as -320 and
dew point was occasionally incorrectly reported
as -32.

• Dew point temperature(dew_pt_temp)
• Air temperature(air_temp)
• Air temperature out of range error(air_temp_out_of_range_error)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)

• null(Raw data stream - documentation not supported)

NSA/CMH/C2 - Data Missing

During the time periods indicated, all data were
reported as -9999, missing.

• Relative Humidity out of range error(relh_out_of_range_error)
• Read timeout error(read_timeout_error)
• Dew point temperature(dew_pt_temp)
• Air temperature(air_temp)
• Air temperature out of range error(air_temp_out_of_range_error)
• Serial port read error(serial_read_error)
• Relative humidity(relh)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)

• null(Raw data stream - documentation not supported)

NSA/CMH/C2 - Data Intermittently Missing

During the time periods indicated, data were reported
as -9999, missing, intermittently.

• Relative Humidity out of range error(relh_out_of_range_error)
• Read timeout error(read_timeout_error)
• Dew point temperature(dew_pt_temp)
• Air temperature(air_temp)
• Air temperature out of range error(air_temp_out_of_range_error)
• Serial port read error(serial_read_error)
• Relative humidity(relh)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)

• null(Raw data stream - documentation not supported)

NSA/CMH/C2 - Temp and DP have spikes

During the time periods indicated, the temperature
and dew point data contain spikes.  This usually
meant the first record had 99.99 meaning missing,
but sometimes the whole record was bad.

• Dew point temperature(dew_pt_temp)
• Air temperature(air_temp)
• Air temperature out of range error(air_temp_out_of_range_error)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)

• null(Raw data stream - documentation not supported)

NSA/CMH/C2 - Some RH Values incorrect

During the time period indicated, RH values were off by
a factor of 10 (decimal shifted to the left one place)
whenever temp, dew point or both were between 1 deg and
9 deg.  RH was reported as zero whenever temp, dew point
or both were 0 deg or less.  RH values are okay when 
temp and dew point were both 10 deg or above.

• Relative Humidity out of range error(relh_out_of_range_error)
• Relative humidity(relh)

• null(Raw data stream - documentation not supported)

NSA/CMH/C2 - Temp and DP incorrect

During the time periods indicated, temperature
was incorrectly reported as -320 and dew point 
was incorrectly reported as -32.

• Dew point temperature(dew_pt_temp)
• Air temperature(air_temp)
• Air temperature out of range error(air_temp_out_of_range_error)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)

• null(Raw data stream - documentation not supported)

NSA/METTWR/C1 - Wind Speed data intermittently bad

Wind speed at 20m level icing up and wind speed values are intermittently
0 m/s, lower than other sensors and good at times.  Heater failure on sensor
that prevents icing.

• Minimum Wind Speed(wind_spd_min)
• Std Dev of Wind Speed(wind_spd_sd)
• Mean Wind Speed(wind_spd_mean)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Maximum Wind Speed(wind_spd_max)

• Maximum Wind Speed(wind_spd_max)
• Wind Speed out of range error(wind_spd_out_of_range_error)
• Mean Wind Speed(wind_spd_mean)
• Std Dev of Wind Speed(wind_spd_sd)
• Minimum Wind Speed(wind_spd_min)
• Vector-averaged Wind Speed(wind_spd_vec_avg)

NSA/METTWR/C1 - Data missing due to Power Failure

From 020606.0150-0204, the met twr data (all levels) are all -9999
due to a power failure.  The collection program was shut down from
0205-1930, so no data were collected.  And from 1931-020607.1707, 
the data are all -9999 again due to the power failure.

• Barometric Pressure(atmos_pressure)
• Maximum Wind Direction(wind_dir_max)
• Mean Vapor Pressure(vap_pres_mean)
• Dummy altitude for Zeb(alt)
• Std Dev of Wind Speed(wind_spd_sd)
• Maximum Vapor Pressure(vap_pres_max)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• base time(base_time)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• lon(lon)
• Wind Speed out of range error(win_spd_out_of_range_error)
• Air Temperature out of range error(temp_out_of_range_error)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Air Temperature Hardware Error(temp_hardware_error)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Temperature minimum(temp_min)
• Temperature maximum(temp_max)
• Relative humidity maximum(relh_max)
• Time offset of tweaks from base_time(time_offset)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• Wind Direction out of range error(win_dir_out_of_range_error)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Relative humidity minimum(relh_min)
• Internal Temperature out of range error(internal_temp_out_of_range_error)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Out of Range Error(atmos_pressure_out_of_range_error)
• Minimum Wind Speed(wind_spd_min)
• Std Dev of Wind Direction(wind_dir_sd)
• Mean Wind Speed(wind_spd_mean)
• Std Dev of Air Temperature(temp_sd)
• Minimum Wind Direction(wind_dir_min)
• Relative Humidity out of range error(relh_out_of_range_error)
• Read Timeout Error(atmos_pressure_read_timeout_error)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Mean Air Temperature or Hardware Error(temp_mean)
• Serial Port Error(serial_port_error)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Minimum Vapor Pressure(vap_pres_min)
• Mean Relative Humidity(relh_mean)
• Maximum Wind Speed(wind_spd_max)
• lat(lat)
• Internal Voltage out of range error(internal_voltage_out_of_range_error)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)

• Internal Voltage out of range error(internal_voltage_out_of_range_error)
• Time offset of tweaks from base_time(time_offset)
• Maximum Wind Speed(wind_spd_max)
• base time(base_time)
• Mean Wind Speed(wind_spd_mean)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Air Temperature Hardware Error(temp_hardware_error)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Temperature maximum(temp_max)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Mean Air Temperature or Hardware Error(temp_mean)
• Number of timeouts reading the met tower data by height(read_timeout_count)
• Mean Relative Humidity(relh_mean)
• Minimum Vapor Pressure(vap_pres_min)
• Out of Range Error(atmos_pressure_out_of_range_error)
• Dummy altitude for Zeb(alt)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Temperature minimum(temp_min)
• Std Dev of Wind Speed(wind_spd_sd)
• Air Temperature out of range error(temp_out_of_range_error)
• Maximum Vapor Pressure(vap_pres_max)
• Maximum Wind Direction(wind_dir_max)
• Minimum Wind Direction(wind_dir_min)
• Minimum Wind Speed(wind_spd_min)
• Wind Direction out of range error(wind_dir_out_of_range_error)
• Internal Temperature out of range error(internal_temp_out_of_range_error)
• Barometric Pressure(atmos_pressure)
• Relative Humidity out of range error(relh_out_of_range_error)
• Relative humidity maximum(relh_max)
• Relative humidity minimum(relh_min)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)
• Wind Speed out of range error(wind_spd_out_of_range_error)
• Std Dev of Air Temperature(temp_sd)
• Mean Vapor Pressure(vap_pres_mean)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Std Dev of Wind Direction(wind_dir_sd)
• lat(lat)
• Read Timeout Error(atmos_pressure_read_timeout_error)
• lon(lon)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Maximum Dew Point Temperature(dew_pt_temp_max)

NSA/ORG/C1 - Optical Rain Gauge incorrect at very low temperatures

The ORG reports precipitation rates that are more than 2 orders of
magnitude greater than those reported by the present weather sensor
when the temperature drops below -25 C.  Examples of this error can
be seen in the data for January 11-13, 2000, however the problem is
not isolated to these days.

A drift occurs when temps are in the range of -25 C to -40 C that
exceeds the maximum drift allowed/expected for the instrument.  The
drift is then reported as precipitation.

The manufacturer of the instrument has not yet been able to identify a
fix for the problem.

• Daily Accumulation out of range error(precip_out_of_range_error)
• Precipitation rate(precip_rate)
• ORG Serial Error(precip_serial_error)
• NWS code(precip_NWS_code)
• Daily Accumulation(precip_daily_accum)
• ORG Read Timeout Error(precip_read_timeout_error)
• ORG No Data Error(precip_no_data_error)

• NWS code(precip_NWS_code)
• Daily Accumulation(precip_daily_accum)
• ORG Serial Error(precip_serial_error)
• ORG No Data Error(precip_no_data_error)
• Daily Accumulation out of range error(precip_out_of_range_error)
• ORG Read Timeout Error(precip_read_timeout_error)
• Precipitation rate(precip_rate)

NSA/ORG/C1 - Optical Rain Gauge incorrect at very low temperatures

The ORG reports precipitation rates that are more than 2 orders of
magnitude greater than those reported by the present weather sensor
when the temperature drops below -25 C.  Examples of this error can
be seen in the data for January 11-13, 2000, however the problem is
not isolated to these days.

A drift occurs when temps are in the range of -25 C to -40 C that
exceeds the maximum drift allowed/expected for the instrument.  The
drift is then reported as precipitation.

The manufacturer of the instrument has not yet been able to identify a
fix for the problem.

• NWS code(precip_NWS_code)
• Daily Accumulation(precip_daily_accum)
• Daily Accumulation out of range error(precip_out_of_range_error)
• ORG Serial Error(precip_serial_error)
• ORG Read Timeout Error(precip_read_timeout_error)
• ORG No Data Error(precip_no_data_error)
• Precipitation rate(precip_rate)

NSA/CMH/C1 - Data not representative

The CMH at the NS Barrow site was moved from the base of the tower to the top of the Great 
White Building.  This was done to test the communication of the sensor without having to 
use any bit drivers.

• null(Raw data stream - documentation not supported)

• Dew point temperature(dew_pt_temp)
• Dummy altitude for Zeb(alt)
• base time(base_time)
• Relative humidity(relh)
• Time offset of tweaks from base_time(time_offset)
• Relative Humidity out of range error(relh_out_of_range_error)
• Air temperature(air_temp)
• Serial port read error(serial_read_error)
• lon(lon)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Read timeout error(read_timeout_error)
• Air temperature out of range error(air_temp_out_of_range_error)
• lat(lat)

NSA/C2 - Missing met, pws, snodep data due to comm error

An error in the communication sub-routine
of the Bridgeview collection software occurred
resulting in data loss from the Snow Depth
sensor, Present Weather Sensor and the 
Barometer.

• Read Timeout Error(atmos_pressure_read_timeout_error)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Barometric Pressure(atmos_pressure)
• Out of Range Error(atmos_pressure_out_of_range_error)

• Barometric Pressure(atmos_pressure)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Out of Range Error(atmos_pressure_out_of_range_error)
• Read Timeout Error(atmos_pressure_read_timeout_error)

• one Minute Visibility(one_minute_visibility)
• Liquid Water Equivalent out of range error(cumul_liq_water_equiv_out_of_range_err)
• One Hour PW code out of range error(one_hour_pw_code_out_of_range_error)
• Ten Minute Visibility out of range error(ten_minute_vis_out_of_range_error)
• One Minute PW code out of range error(one_min_pw_code_out_of_range_error)
• Ten Minute PW code \\(WMO SYNOP code\\)(ten_minute_PW_code)
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• PWS Precipitation Rate out of range error(precip_rate_out_of_range_error)
• One Minute PW code \\(WMO SYNOP code\\)(one_minute_PW_code)
• One Hour PW code \\(WMO SYNOP code\\)(one_hour_PW_code)
• Cumulative Snow(cumulative_snow)
• Present Weather Sensor Read Timeout Error(pws_read_timeout_error)
• base time(base_time)
• Ten Minute PW code out of range error(ten_min_pw_code_out_of_range_error)
• Cumulative Snow out of range error(cumul_snow_out_of_range_error)
• Present Weather Sensor Serial Error(pws_serial_error)
• Ten Minute Visibility(ten_minute_visibility)
• Precipitation rate(precip_rate)
• NWS code(present_weather_sensor_NWS_code)
• One Minute Visibility out of range error(one_minute_vis_out_of_range_error)

• Snow Depth internal QC number(snow_depth_internal_QC)
• SR50 Serial Error(snow_depth_serial_error)
• Read Timeout Error(snow_depth_read_timeout_error)
• Snow Depth(snow_depth)
• Out of Range Error(snow_depth_out_of_range_error)

• Ten Minute PW code \\(WMO SYNOP code\\)(ten_minute_PW_code)
• Cumulative Snow(cumulative_snow)
• NWS code(present_weather_sensor_NWS_code)
• Present Weather Sensor Serial Error(pws_serial_error)
• One Minute PW code out of range error(one_min_pw_code_out_of_range_error)
• one Minute Visibility(one_minute_visibility)
• Present Weather Sensor Read Timeout Error(pws_read_timeout_error)
• Ten Minute Visibility(ten_minute_visibility)
• One Hour PW code out of range error(one_hour_pw_code_out_of_range_error)
• One Minute PW code \\(WMO SYNOP code\\)(one_minute_PW_code)
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• Cumulative Snow out of range error(cumul_snow_out_of_range_error)
• Ten Minute PW code out of range error(ten_min_pw_code_out_of_range_error)
• Ten Minute Visibility out of range error(ten_minute_vis_out_of_range_error)
• Liquid Water Equivalent out of range error(cumul_liq_water_equiv_out_of_range_err)
• One Minute Visibility out of range error(one_minute_vis_out_of_range_error)
• Precipitation rate(precip_rate)
• One Hour PW code \\(WMO SYNOP code\\)(one_hour_PW_code)
• PWS Precipitation Rate out of range error(precip_rate_out_of_range_error)

NSA/METTWR/C1  -  C1/METTWR PRESSURE DATA MISSING AND INCORRECT

Starting at 0501 UTC on 05/21, pressure readings frequently are out of tolerance.  The 
read timeout value had changed from 250 ms to 150 ms.  Changed the read time out back to 250 
ms.  Unknown as to how read timeout values changed.

• Barometric Pressure(atmos_pressure)

• Barometric Pressure(atmos_pressure)

NSA/PWS/C1 - C1/BARROW PWS WORKING INTERMITTENTLY

The PWS worked intermittently throughout entire period.  Extensive troubleshooting located 
a broken wire in the RS-232 connector.  Contact was made intermittently allowing some 
data to be recorded.

• Ten Minute PW code out of range error(ten_min_pw_code_out_of_range_error)
• One Hour PW code \\(WMO SYNOP code\\)(one_hour_PW_code)
• Precipitation rate(precip_rate)
• Present Weather Sensor Read Timeout Error(pws_read_timeout_error)
• One Minute PW code out of range error(one_min_pw_code_out_of_range_error)
• One Minute Visibility out of range error(one_minute_vis_out_of_range_error)
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• One Hour PW code out of range error(one_hour_pw_code_out_of_range_error)
• Cumulative Snow out of range error(cumul_snow_out_of_range_error)
• Present Weather Sensor Serial Error(pws_serial_error)
• Ten Minute Visibility(ten_minute_visibility)
• One Minute PW code \\(WMO SYNOP code\\)(one_minute_PW_code)
• NWS code(present_weather_sensor_NWS_code)
• Ten Minute PW code \\(WMO SYNOP code\\)(ten_minute_PW_code)
• Liquid Water Equivalent out of range error(cumul_liq_water_equiv_out_of_range_err)
• one Minute Visibility(one_minute_visibility)
• Cumulative Snow(cumulative_snow)
• Ten Minute Visibility out of range error(ten_minute_vis_out_of_range_error)
• PWS Precipitation Rate out of range error(precip_rate_out_of_range_error)

• Ten Minute Visibility(ten_minute_visibility)
• one Minute Visibility(one_minute_visibility)
• Present Weather Sensor Read Timeout Error(pws_read_timeout_error)
• Cumulative Snow out of range error(cumul_snow_out_of_range_error)
• Ten Minute Visibility out of range error(ten_minute_vis_out_of_range_error)
• Cumulative Snow(cumulative_snow)
• One Minute PW code out of range error(one_min_pw_code_out_of_range_error)
• NWS code(present_weather_sensor_NWS_code)
• Liquid Water Equivalent out of range error(cumul_liq_water_equiv_out_of_range_err)
• One Minute Visibility out of range error(one_minute_vis_out_of_range_error)
• One Hour PW code out of range error(one_hour_pw_code_out_of_range_error)
• Present Weather Sensor Serial Error(pws_serial_error)
• One Hour PW code \\(WMO SYNOP code\\)(one_hour_PW_code)
• Ten Minute PW code \\(WMO SYNOP code\\)(ten_minute_PW_code)
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• One Minute PW code \\(WMO SYNOP code\\)(one_minute_PW_code)
• Ten Minute PW code out of range error(ten_min_pw_code_out_of_range_error)
• Precipitation rate(precip_rate)
• PWS Precipitation Rate out of range error(precip_rate_out_of_range_error)

NSA/METTWR/C1 - power outage at 40m level

40m level lost power so no data was collected from this level.

• 40m Arithmetic Mean Wind Speed(WS40M_S_WVT)
• 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
• 40m Average Relative Humidity(RH40M_AVG)
• 40m Average QLI Reference Voltage(Volt40M_AVG)
• 40m Average Temperature(T40M_AVG)
• 40m Average QLI Reference Temperature(RefT40M_AVG)
• Standard Deviation of 40m Vector Averaged Wind Direction(WD40M_SDU_WVT)
• Standard Deviation of 40m Relative Humidity(RH40M_STD)
• 40m Average Calculated Dew Point(DP40M_AVG)
• Standard Deviation of 40m Temperature(T40M_STD)
• 40m Vector Averaged Wind Speed(WS40M_U_WVT)
• Standard Deviation of 40m Calculated Vapor Pressure(VP40M_STD)
• 40m Average Calculated Vapor Pressure(VP40M_AVG)
• Standard Deviation of 40m Calculated Dew Point(DP40M_STD)

NSA/METTWR/C1 - Chilled Mirror transmit logic board chipset unsuited for Arctic 
temperatures

Data missing due to problems with manufacturer's transmit logic board chipset.  They were 
generic chips not rated for Arctic temperatures.

• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - CMH Dew Point and RH data Incorrect

The Chilled Mirror Dew Point reported negative dew point values.  This caused the RH to be 
much lower than reality also.  Compared to the 2m level the RH and dew point from the 
CMH are incorrect.  Mirror was dirty, it was removed, cleaned and recalibrated.

• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - Instrument problem, Contamination, False signal

Heavy, wet and blowing snow and ice caused measurement problems with the sonic anemometer 
mounted at the 2m level.  Erroneous readings caused both the wind speed and direction 
values to be reported anomolously.  Once the heavy, wet snow and ice stopped the readings 
returned to normal.

• Standard Deviation of Sonic Vector Averaged Wind Direction(SonicWD_SDU_WVT)
• Sonic Vector Averaged Wind Speed(SonicWS_U_WVT)
• Sonic Arithmetic Mean Wind Speed(SonicWS_S_WVT)
• Average Sonic Static Speed of Sound(SonicS_AVG)
• Average Y Component of Sonic Wind Speed(SonicY_AVG)
• Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
• Average X Component of Sonic Wind Speed(SonicX_AVG)

NSA/METTWR/C1 - 20m Temperature/RH Sensor Failing

The 20m temperature and RH sensor began reading high on 20040719.
Aspirator fan failure caused a portion of the high reading.  New fan
failed to correct for all errors.  Sensor replaced on 20040908 with
recently calibrated sensor.

• Standard Deviation of 20m Calculated Dew Point(DP20M_STD)
• 20m Average Calculated Dew Point(DP20M_AVG)
• 20m Average Calculated Vapor Pressure(VP20M_AVG)
• 20m Average Temperature(T20M_AVG)
• Standard Deviation of 20m Relative Humidity(RH20M_STD)
• 20m Average Relative Humidity(RH20M_AVG)
• Standard Deviation of 20m Calculated Vapor Pressure(VP20M_STD)
• Standard Deviation of 20m Temperature(T20M_STD)

NSA/METTWR/C1 - Sonic - Instrument problem, Contamination, False signal

Heavy, wet and blowing snow and ice caused measurement problems with the sonic anemometer 
mounted at the 2m level.  Erroneous readings caused both the wind speed and direction 
values to be reported anomolously.	Once the heavy, wet snow and ice stopped the readings 
returned to normal.

• Standard Deviation of Sonic Vector Averaged Wind Direction(SonicWD_SDU_WVT)
• Sonic Vector Averaged Wind Speed(SonicWS_U_WVT)
• Sonic Arithmetic Mean Wind Speed(SonicWS_S_WVT)
• Average Sonic Static Speed of Sound(SonicS_AVG)
• Average Y Component of Sonic Wind Speed(SonicY_AVG)
• Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
• Average X Component of Sonic Wind Speed(SonicX_AVG)

NSA/METTWR/C1 - Instrument problem, Frosting/Condensation

The 2m T & RH values were not in very good agreement with the CMH data or the other tower 
levels.  A failed aspirator fan caused the readings to be incorrect.

• 2m Average Calculated Dew Point(DP2M_AVG)
• 2m Average Temperature(T2M_AVG)
• Standard Deviation of 2m Relative Humidity(RH2M_STD)
• 2m Average Relative Humidity(RH2M_AVG)
• Standard Deviation of 2m Calculated Dew Point(DP2M_STD)
• Standard Deviation of 2m Temperature(T2M_STD)
• Standard Deviation of 2m Calculated Vapor Pressure(VP2M_STD)
• 2m Average Calculated Vapor Pressure(VP2M_AVG)

NSA/METTWR/C1 - All 10m level Data Missing

After prolonged power outage and many power spikes during the outage all data from the 10m 
level are missing.  Blown fuse on the power supply was replaced once the temperatures 
warmed enough to allow the lowering of the tower carriages.

• 10m Average Calculated Vapor Pressure(VP10M_AVG)
• Standard Deviation of 10m Relative Humidity(RH10M_STD)
• Standard Deviation of 10m Temperature(T10M_STD)
• 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
• 10m Vector Averaged Wind Direction(WD10M_DU_WVT)
• Standard Deviation of 10m Calculated Vapor Pressure(VP10M_STD)
• Standard Deviation of 10m Calculated Dew Point(DP10M_STD)
• Standard Deviation of 10m Vector Averaged Wind Direction(WD10M_SDU_WVT)
• 10m Average Calculated Dew Point(DP10M_AVG)
• 10m Vector Averaged Wind Speed(WS10M_U_WVT)
• 10m Average QLI Reference Temperature(RefT10m_AVG)
• 10m Average Relative Humidity(RH10M_AVG)
• 10m Average Temperature(T10M_AVG)
• 10m Average QLI Input Voltage(Volt10M_AVG)

NSA/METTWR/C1 - Instrument problem

2m wind direction reporting only 236 degrees.  Sensor failure.

• Standard Deviation of 2m Vector Averaged Wind Direction(WD2M_SDU_WVT)
• 2m Vector Averaged Wind Direction(WD2M_DU_WVT)

NSA/METTWR/C1 - Reprocess: Incorrect windspeed units

Power fluctuations caused the Ultrasonic wind sensor to revert to default setting of 
reporting wind speed in mph.  Setting was changed back to m/s.

• Sonic Vector Averaged Wind Speed(SonicWS_U_WVT)
• Sonic Arithmetic Mean Wind Speed(SonicWS_S_WVT)
• Average Sonic Static Speed of Sound(SonicS_AVG)
• Average Y Component of Sonic Wind Speed(SonicY_AVG)
• Average X Component of Sonic Wind Speed(SonicX_AVG)

NSA/METTWR/C1 - Instrument problem, Contamination, False signal

Data in error due to heavy snow during blizzard conditions.

• Standard Deviation of Sonic Vector Averaged Wind Direction(SonicWD_SDU_WVT)
• Sonic Vector Averaged Wind Speed(SonicWS_U_WVT)
• Sonic Arithmetic Mean Wind Speed(SonicWS_S_WVT)
• Average Sonic Static Speed of Sound(SonicS_AVG)
• Average Y Component of Sonic Wind Speed(SonicY_AVG)
• Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
• Average X Component of Sonic Wind Speed(SonicX_AVG)

NSA/C1 - Site-wide power failure

The Barrow facility experienced a site-wide power failure on 12/13.  Power was restored to 
most instruments between 2250 and 2330 GMT.

• Spectral Data (signal strength/freq int)(spc_amp)
• Dummy altitude for Zeb(alt)
• Pulse Length(plen)
• Number of Coherent Samples/spectral point(ncoh)
• Time Domain Integration Time(tditime)
• Rx Bandwidth Switch Code(bswitch)
• Time offset of tweaks from base_time(time_offset)
• Number of Individual Spectra/Average Spectrum(nspc)
• Individual Spectrum Integration Time(sitime)
• Vertical FFT Bandwidth(vband)
• Particle radius at logarithmic center of bin(bins)
• elevation(elevation)
• Delay Time to 1st Gate(dly)
• lon(lon)
• Number of valid heights(nheight)
• Sample Rate(sampr)
• base time(base_time)
• Array of heights for each sample time(height_t)
• Height Index(range_gate)
• Pulse Repetition Frequency(prf)
• Range Gate Spacing(rgs)
• Oblique FFT Bandwidth(oband)
• Number of Pulse Code Bits(pcbits)
• Radial Velocity Spectral Resolution(vsr)
• Ave Time per Average Spectra.(spcavetim)
• Interpulse Period(ipp)
• Beam Number(beam)
• lat(lat)
• Height of Center of Last Range Gate(rgl)
• Height of Center of First Range Gate(rgf)

• U-component(u_wind)
• lon(lon)
• Number of Individual Spectra/Average Spectrum(nspc)
• Power offset(power)
• Average Interval(avgint)
• Range Gate Spacing(rgs)
• Signal to Noise Ratio, Beam 3(snr3)
• Signal to Noise Ratio, Beam 4(snr4)
• Signal to Noise Ratio, Beam 0(snr0)
• copolar signal to noise ratio(snr1)
• Ave snr*10 level, Beam 2(snr2)
• Delay Time to 1st Gate(dly)
• Vertical Velocity Spectral Resolution(vvsr)
• Horizontal wind direction(dir)
• Oblique FFT Bandwidth(oband)
• Time Domain Integration Time(tditime)
• Height of Center of Last Range Gate(rgl)
• Height of Center of First Range Gate(rgf)
• Height Index(range_gate)
• Number of Coherent Samples/spectral point(ncoh)
• Time offset of tweaks from base_time(time_offset)
• lat(lat)
• Pulse Repetition Frequency(prf)
• base time(base_time)
• Oblique Velocity Spectral Resolution(ovsr)
• Azimuth of Beam 1(azimuth1)
• Azimuth of Beam 0(azimuth0)
• Azimuth of Beam 3 for WINDS data(azimuth3)
• Azimuth of Beam 2(azimuth2)
• Beam 2 radial wind speed(vel2)
• Beam 1 radial wind speed(vel1)
• Azimuth of Beam 4 for WINDS data(azimuth4)
• Beam 4 radial wind speed(vel4)
• Beam 3 radial wind speed(vel3)
• Sample Rate(sampr)
• Beam 0 radial wind speed(vel0)
• Interpulse Period(ipp)
• Number of Values Required for Consensus, Beam 4(nrcns4)
• Number of Values Required for Consensus, Beam 3(nrcns3)
• Number of Values Required for Consensus, Beam 2(nrcns2)
• Number of Values Required for Consensus, Beam 1(nrcns1)
• Number of Values Required for Consensus, Beam 0(nrcns0)
• Number of values that passed consensus, beam 1(ncns1)
• Number of values that passed consensus, beam 0(ncns0)
• Number of values that passed consensus, beam 3(ncns3)
• Number of values that passed consensus, beam 2(ncns2)
• Number of values that passed consensus, beam 4(ncns4)
• Individual Spectrum Integration Time(sitime)
• Horizontal wind speed(spd)
• Pulse Length(plen)
• Ave Time per Average Spectra.(spcavetim)
• Dummy altitude for Zeb(alt)
• Number of valid heights(nheight)
• Number of spectra/ave int, Beam 0(nrec0)
• Number of spectra/ave int, Beam 1(nrec1)
• Number of spectra/ave int, Beam 2(nrec2)
• Number of spectra/ave int, Beam 3(nrec3)
• Number of spectra/ave int, Beam 4(nrec4)
• Elevation angle of Beam 0 for WINDS data(elevation0)
• V-component(v_wind)
• Elevation angle of Beam 2 for WINDS data(elevation2)
• Elevation angle of Beam 1 for WINDS data(elevation1)
• Elevation angle of Beam 4 for WINDS data(elevation4)
• Elevation angle of Beam 3 for WINDS data(elevation3)
• Array of heights for each sample time(height_p)
• Vertical FFT Bandwidth(vband)
• Number of Pulse Code Bits(pcbits)
• Rx Bandwidth Switch Code(bswitch)

• Mean of radiance spectra ensemble(mean_rad)
• AERI instrument unit serial number(AERIunitNumber)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Time (HHMMSS)(timeHHMMSS)
• wavenumbers for standard deviation of radiance spectra(wnum2)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Version number of Operational Software(systemReleaseNumber)
• AERI instrument data channel number(channelNumber)
• Time offset of tweaks from base_time(time_offset)
• base time(base_time)
• Dummy altitude for Zeb(alt)
• Observation longitude(Longitude)
• BB Support Structure Temperature(BBsupportStructureTemp)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Character string containing instrument name(instrumentUnitNumber)
• Observation latitude(Latitude)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Observation date(dateYYMMDD)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Wave number(wnum)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• lat(lat)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Julian Day including day and fraction of day(JulianDay)
• Duration of scene view(sceneViewDuration)
• Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
• time(time)
• lon(lon)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Observation Altitude(Altitude)

• Sky Infra-Red Temperature(sky_ir_temp)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• Sky brightness temperature at 31.4 GHz(tbsky31)
• Sky brightness temperature at 23.8 GHz(tbsky23)
• Blackbody kinetic temperature(tkbb)
• Dummy altitude for Zeb(alt)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
• 23.8 GHz Blackbody signal(bb23)
• 31.4 GHz blackbody(bb31)
• Time offset of tweaks from base_time(time_offset)
• Temperature correction coefficient at 23.8 GHz(tc23)
• Temperature correction coefficient at 31.4 GHz(tc31)
• (tknd)
• lat(lat)
• Actual elevation angle(actel)
• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• Mixer kinetic (physical) temperature(tkxc)
• IR Brightness Temperature(ir_temp)
• 23.8 GHz sky signal(sky23)
• 23.8 GHz blackbody+noise injection signal(bbn23)
• base time(base_time)
• 31.4 GHz sky signal(sky31)
• 31.4 GHz blac2body+noise injection signal(bbn31)
• Actual Azimuth(actaz)
• Ambient temperature(tkair)
• lon(lon)
• Averaged total liquid water along LOS path(liq)
• MWR column precipitable water vapor(vap)

• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
• Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
• Julian Day including day and fraction of day(JulianDay)
• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• AERI instrument data channel number(channelNumber)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
• Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm-1(LWskyNEN)
• Observation latitude(Latitude)
• lon(lon)
• Version number of Operational Software(systemReleaseNumber)
• Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
• AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
• AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Wave number in reciprocal centimeters(wnumsum7)
• Wave number in reciprocal centimeters(wnumsum6)
• Wave number in reciprocal centimeters(wnumsum5)
• Wave number in reciprocal centimeters(wnumsum4)
• Wave number in reciprocal centimeters(wnumsum3)
• Wave number in reciprocal centimeters(wnumsum2)
• Wave number in reciprocal centimeters(wnumsum1)
• Wave number in reciprocal centimeters(wnumsum9)
• Wave number in reciprocal centimeters(wnumsum8)
• AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
• AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• lat(lat)
• Observation Altitude(Altitude)
• xxx(dataAvailable)
• Character string containing instrument name(instrumentUnitNumber)
• Time offset of tweaks from base_time(time_offset)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
• AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
• time(time)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Duration of scene view(sceneViewDuration)
• AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
• AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
• AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
• AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
• AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm-1)(elevatedLayerAirTemp700_705)
• Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
• AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
• AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
• Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
• Observation date(dateYYMMDD)
• Dummy altitude for Zeb(alt)
• Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
• base time(base_time)
• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm-1)(surfaceLayerAirTemp2295_2300)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm-1(SWskyNEN)
• Wave number in reciprocal centimeters(wnumsum11)
• Wave number in reciprocal centimeters(wnumsum12)
• Wave number in reciprocal centimeters(wnumsum13)
• Wave number in reciprocal centimeters(wnumsum14)
• Wave number in reciprocal centimeters(wnumsum10)
• Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• Observation longitude(Longitude)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the sky view(HBBtempDrift)
• Sun sensor analog output: The sun sensor has a view angle to the sky slightly
  larger than the interferometer FOV and is aligned to the interferometer
  line-of-sight. I(sunSensorIntensity)
• Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
• Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
• Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
• Time (HHMMSS)(timeHHMMSS)
• AERI instrument unit serial number(AERIunitNumber)
• Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
• Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
  indicative of front end air flow.(frontEndFanAirTempDiff)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Rain sensor analog output: the rain sensor is located inside the hatch near the
  sky aperture and is used to flag the critical condition of rain falling on
  the AERI s(rainSensorIntensity)
• Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)

• base time(base_time)
• Range Gate Spacing(rgs)
• 1000 * log10(noise signal level: vert vel)(noise)
• Signal to Noise Ratio of the RASS Signal(snr)
• Array of heights for the range gates(height)
• Beam 0 virtual temperature(virtual_temp)
• Mean atmospheric vertical velocity(mdf)
• Mean acoustic speed(smdf)
• lon(lon)
• Time offset of tweaks from base_time(time_offset)
• Sample Rate(sampr)
• Spectral Width: vert velocity(specw)
• Dummy altitude for Zeb(alt)
• Signal to Noise Ratio: acoustic(ssnr)
• Acoustic Spectral Width(sspecw)
• lat(lat)

• lon(lon)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Julian Day including day and fraction of day(JulianDay)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Observation longitude(Longitude)
• Observation date(dateYYMMDD)
• time(time)
• Duration of scene view(sceneViewDuration)
• Mean of radiance spectra ensemble(mean_rad)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Time (HHMMSS)(timeHHMMSS)
• base time(base_time)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Observation latitude(Latitude)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Character string containing instrument name(instrumentUnitNumber)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Version number of Operational Software(systemReleaseNumber)
• AERI instrument data channel number(channelNumber)
• wavenumbers for standard deviation of radiance spectra(wnum2)
• lat(lat)
• BB Support Structure Temperature(BBsupportStructureTemp)
• Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
• Observation Altitude(Altitude)
• Wave number(wnum)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• AERI instrument unit serial number(AERIunitNumber)
• Dummy altitude for Zeb(alt)
• Time offset of tweaks from base_time(time_offset)
• Ambient temperature used in calibration(calibrationAmbientTemp)

• Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
• Background Signal(background_signal)
• time(time)
• Number of laser shots recorded(shots_summed)
• lat(lat)
• Voltage level which operates the energy monitor(voltage_15)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• Voltage level which operates the A/D card and the detector(voltage_05)
• Voltage level which operates the thermistor(voltage_10)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• Instrument Temperature(instrument_temp)
• Detector Temperature(detector_temp)
• Array of heights for the range gates(height)
• Laser Temperature(laser_temp)
• Time offset of tweaks from base_time(time_offset)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• range(range)
• Filter Temperature(filter_temp)
• Preliminary cloud base height(preliminary_cbh)
• Laser output energy per pulse(energy_monitor)
• Dummy altitude for Zeb(alt)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• Attenuated backscatter(detector_counts)
• base time(base_time)
• lon(lon)
• Width of range-bins calculated from range_bin_time(range_bin_width)

• Warning and alarm status bits(status_string)
• Aerosol backscatter coefficient at 355 nm(backscatter)
• Lowest cloud base height detected.(first_cbh)
• Degrees from vertical (0 to +90)(tilt_angle)
• base time(base_time)
• Second lowest cloud base height(second_cbh)
• Detection status. See details(detection_status)
• Altitude of highest signal(alt_highest_signal)
• Millivolts at internal ADC input(window_contamination)
• Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
• Vertical visibility(vertical_visibility)
• Laser temperature(laser_temperature)
• Dummy altitude for Zeb(alt)
• Time offset of tweaks from base_time(time_offset)
• GPS raw data filename(filename)
• lat(lat)
• Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
• Backscatter sum(sum_backscatter)
• Flag indicating aeri retrieval status(status_flag)
• lon(lon)
• Millivolts at internal ADC input (0 to 2500)(background_light)
• Third cloud base height(third_cbh)
• 6 character string describing instrument measurement parameters(measurement_parameters)
• range(range)

• Array of heights for the range gates(height)
• Sample Rate(sampr)
• Range Gate Spacing(rgs)
• lat(lat)
• lon(lon)
• base time(base_time)
• Time offset of tweaks from base_time(time_offset)
• Dummy altitude for Zeb(alt)
• Spectral Data (signal strength/freq int)(spc_amp)
• Particle radius at logarithmic center of bin(bins)

• Signal to Noise Ratio, Corrected Beam 0 Virtual Temperature(snr_virtual_temp_corr)
• Number of Values that Passed Consensus, Beam 0 Virtual Temperature(ncns_virtual_temp)
• Signal to Noise Ratio, Beam 0 Virtual Temperature(snr_virtual_temp)
• Array of heights for the range gates(height)
• Range Gate Spacing(rgs)
• Number of Values that Passed Consensus, Vertical wind velocity(ncns_vert_v)
• Number of Values that Passed Consensus, Corrected Beam 0 Virtual Temperature(ncns_virtual_temp_corr)
• Time offset of tweaks from base_time(time_offset)
• Beam 0 virtual temperature(virtual_temp)
• Vertical wind velocity(vert_v)
• lat(lat)
• Number of Values Required for Consensus, Beam 0(nrcns)
• base time(base_time)
• Signal to Noise Ratio, Vertical wind velocity(snr_vert_v)
• Sample Rate(sampr)
• lon(lon)
• virtual_temp_corr(virtual_temp_corr)
• Average Interval(avgint)
• Dummy altitude for Zeb(alt)
• Number of pulses/ave int, Beam 0(nrec)

• Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
• Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
• Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
• Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
• Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
• Detector temperature sensed via diode near detector(detectorTemp)
• Number of complete (forward+backward) interferogram scans in sample average(coadditionsCount)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
• Hot blackbody temperature - apex(HBBapexTemp)
• Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
• Radiance standard deviation during ambient blackbody view averaged over
  (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
• Version number of Operational Software(systemReleaseNumber)
• Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
• base time(base_time)
• Radiance standard deviation during ambient blackbody view averaged over (985_990
  cm-1)(ABBviewStdDevRadiance985_990)
• Time (HHMMSS)(timeHHMMSS)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
• Spare temperature sensor (location TBD)(spareTemp)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• Observation latitude(Latitude)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• AERI instrument data channel number(channelNumber)
• Radiance standard deviation during hot blackbody view averaged over (700_705
  cm-1)(HBBviewStdDevRadiance700_705)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Radiance standard deviation during hot blackbody view averaged over (2510_2515
  cm-1)(HBBviewStdDevRadiance2510_2515)
• Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Interferometer front end fan airflow heated temperature: used with unheated
  temperature as measure of airflow.(frontEndFanAirHeatedTemp)
• Corrective offset for final hot blackbody average temperature(HBBtempOffset)
• Character string containing instrument name(instrumentUnitNumber)
• Ambient blackbody temperature - rim top(ABBtopTemp)
• Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
• Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Time offset of tweaks from base_time(time_offset)
• Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm-1(LWskyNEN)
• Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
• Weight factor for bottom used in calculating ambient blackbody temperature
  average(ABBbottomTempWeight)
• Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
• Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
• Stirling cycle cooler current(coolerCurrent)
• Radiance standard deviation during ambient blackbody view averaged over (700_705
  cm-1)(ABBviewStdDevRadiance700_705)
• Hot blackbody temperature - rim bottom(HBBbottomTemp)
• Interferometer front end fan airflow unheated temperature: used with heated
  temperature as measure of airflow.(frontEndFanAirUnheatedTemp)
• AERI ingest computer temperature measured at back panel of computer(computerTemp)
• lon(lon)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• AERI interferometer temperature at second port(interferometerSecondPortTemp)
• Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm-1)(elevatedLayerAirTemp700_705)
• Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
• Size of buffer holding initial spectrum(originalInterferogramSize)
• Radiance standard deviation during hot blackbody view averaged over (985_990
  cm-1)(HBBviewStdDevRadiance985_990)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
• Scene mirror motor driver heat sink temperature(motorDriverTemp)
• Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
• Observation longitude(Longitude)
• Dummy altitude for Zeb(alt)
• Radiance standard deviation during hot blackbody view averaged over (675_680
  cm-1)(HBBviewStdDevRadiance675_680)
• Radiance standard deviation during hot blackbody view averaged over (2282_2287
  cm-1)(HBBviewStdDevRadiance2282_2287)
• Ambient blackbody temperature - apex(ABBapexTemp)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
• Ambient blackbody temperature(ABBbottomTemp)
• AERI instrument unit serial number(AERIunitNumber)
• Observation Altitude(Altitude)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• Number of views in a sequence(sceneMirPosCount)
• Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• lat(lat)
• Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm-1)(surfaceLayerAirTemp2295_2300)
• Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
• Radiance standard deviation during ambient blackbody view averaged over (675_680
  cm-1)(ABBviewStdDevRadiance675_680)
• BB Support Structure Temperature(BBsupportStructureTemp)
• Radiance standard deviation during hot blackbody view averaged over (2295_2300
  cm-1)(HBBviewStdDevRadiance2295_2300)
• Scene mirror position encoder value(sceneMirPosEncoder)
• Rain sensor analog output: the rain sensor is located inside the hatch near the
  sky aperture and is used to flag the critical condition of rain falling on
  the AERI s(rainSensorIntensity)
• Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
• Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
• Signal conditioning electronics inside air temperature(SCEtemp)
• Duration of scene view(sceneViewDuration)
• Radiance standard deviation during ambient blackbody view averaged over
  (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
• Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
• Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
• Observation date(dateYYMMDD)
• Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
• Ambient air temperature near blackbodies(airNearBBsTemp)
• Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
• Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
• Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
• Blackbody cavity geometry factor(BBcavityFactor)
• Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
• Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
• Stirling cycle cooler expander temperature(coolerExpanderTemp)
• Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
• xxx(dataAvailable)
• Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the sky view(HBBtempDrift)
• Sun sensor analog output: The sun sensor has a view angle to the sky slightly
  larger than the interferometer FOV and is aligned to the interferometer
  line-of-sight. I(sunSensorIntensity)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Instrument scene mirror position identifier(sceneMirrorPosition)
• Radiance standard deviation during ambient blackbody view averaged over
  (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Hot blackbody temperature - rim top(HBBtopTemp)
• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• time(time)
• Julian Day including day and fraction of day(JulianDay)
• Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
• Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
• Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
• Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
• Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
• Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm-1(SWskyNEN)
• Ambient air temperature near the interferometer(airNearInterferometerTemp)
• Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
• Scene mirror motor case temperature(mirrorMotorTemp)
• Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
• Field of view half angle used in finite FOV correction(FFOVhalfAngle)
• Interferometer window temperature measured on the outside of the aluminum window
  flange(interferometerWindowTemp)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
• Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
• Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)
• Number of terms used in finite field of view correction(numberOfTerms)
• Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
  indicative of front end air flow.(frontEndFanAirTempDiff)

• Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
• Detector Temperature(detector_temp)
• Sum of raw backscatter counts per bin prior to ANY corrections.(total_counts)
• Amount of time the scalar lags behind the sync trigger(scalar_sync_offset)
• Array of heights for the range gates(height)
• Angle of orientation with respect to true geographic north(transceiver_azimuth_angle)
• Time offset of tweaks from base_time(time_offset)
• Amount of time the actual laser pulse lags behind the sync trigger(laser_sync_offset)
• Preliminary cloud base height(preliminary_cbh)
• Voltage level which operates the thermistor(voltage_10)
• Voltage level which operates the energy monitor(voltage_15)
• Voltage level which operates the A/D card and the detector(voltage_05)
• Repetition rate, or Trigger Frequency of the laser(trigger_freq)
• time(time)
• Instrument Temperature(instrument_temp)
• Number of laser pulses summed during measurement interval(shots_sum)
• Filter Temperature(filter_temp)
• Aerosol backscatter coefficient at 355 nm(backscatter)
• Dummy altitude for Zeb(alt)
• lon(lon)
• base time(base_time)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• Background Signal(background_signal)
• required to correct raw counts for detector deadtime prior to all other
  corrections.(deadtime_correction)
• Amount of time laser pulse lags behind the scalar trigger(laser_scalar_sync_offset)
• lat(lat)
• range(range)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Laser output energy per pulse(energy_monitor)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Number of laser shots recorded(shots_summed)
• value represents date of last configuration change as yyyymmdd(property)
• Laser Temperature(laser_temp)
• Angle of inclination with respect to horizontal(transceiver_altitude_angle)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)

• Current Receiver Number(ReceiverNumber)
• Receiver Cal Check Time Stamp(CalCheckTime)
• Receiver Cal Time Stamp(RxCalTimeStamp)
• TWT Status Code, details forthcoming from MMCR vendor(TWTStatusCode)
• DC Filtering ON-OFF Status(DCFilterONOFF)
• base time(base_time)
• Number of Code Bits(NumCodeBits)
• MMCR Mean Doppler Velocity(MeanDopplerVelocity)
• Windowing ON-OFF Status(WindowingONOFF)
• Number of Points in FFT(NumFFT)
• Receiver Mode(ReceiverMode)
• Gate Spacing(GateSpacing)
• Number of Gate Heights(NumHeights)
• Array of heights for each power(heights)
• Receiver Cal Check Level(CalCheckLevel)
• Pulse Width(PulseWidth)
• Number of Spectral Averages(NumSpectralAverages)
• Receiver Sky Noise(SkyNoiseLevel)
• Power (uncalibrated)(Power)
• Data Quality Status(DataQualityStatus)
• Signal to Noise Ratio(SignalToNoiseRatio)
• Max. height of clutter removal(ClutterHeight)
• Operating Set for this Record(ModeNum)
• Number of Coherent Integrations(NumCoherentIntegrations)
• Minimum detectable reflectivity(MinimumDetectableReflectivity)
• Time offset of tweaks from base_time(time_offset)
• MMCR Reflectivity(Reflectivity)
• Receiver 290K Level(Rx290KLevel)
• lon(lon)
• RadarWaveLength(m) / [4 * InterPulsePeriod(s) * NumCoherentIntegrations](NyquistVelocity)
• radar mode char identifier(ModeDescription)
• Peak tranmitted power, averaged over the course of the hour(PeakTransmittedPowerAvg)
• Time associated with hourly averaged values(TimeAvg)
• Delay to First Range Gate(StartGateDelay)
• Inter-Pulse Period(InterPulsePeriod)
• lat(lat)
• Dummy altitude for Zeb(alt)
• Receiver Gain(RxGain)
• time(time)
• Number of Receiver(NumReceivers)
• Range Corrected Calibrated Power(RangeCorrectedPower)
• MMCR Spectral Width(SpectralWidth)
• Average Noise Level (S/N<0)(AvgNoiseLevel)
• Mean Noise Level(NoiseLevel)
• Circular Depolarization Ratio(CircularDepolarizationRatio)
• Radar Constant(RadarConstant)

• lat(lat)
• Standard Deviation of Sonic Vector Averaged Wind Direction(SonicWD_SDU_WVT)
• Standard Deviation of 10m Relative Humidity(RH10M_STD)
• Standard Deviation of 10m Calculated Vapor Pressure(VP10M_STD)
• 10m Average Relative Humidity(RH10M_AVG)
• 10m Vector Averaged Wind Speed(WS10M_U_WVT)
• 2m Average Calculated Dew Point(DP2M_AVG)
• 2m Average Calculated Vapor Pressure(VP2M_AVG)
• 20m Average Calculated Vapor Pressure(VP20M_AVG)
• 10m Average Calculated Dew Point(DP10M_AVG)
• Chilled Mirror Temperature(CMHTemp)
• Standard Deviation of 20m Calculated Vapor Pressure(VP20M_STD)
• Standard Deviation of 20m Calculated Dew Point(DP20M_STD)
• 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)
• 2m Vector Averaged Wind Speed(WS2M_U_WVT)
• 10m Average QLI Reference Temperature(RefT10m_AVG)
• Standard Deviation of 40m Calculated Dew Point(DP40M_STD)
• 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
• 40m Arithmetic Mean Wind Speed(WS40M_S_WVT)
• time(time)
• 40m Average QLI Reference Temperature(RefT40M_AVG)
• Standard Deviation of 10m Calculated Dew Point(DP10M_STD)
• Present Weather Sensor Alarm(PWSAlarm)
• Standard Deviation of 40m Vector Averaged Wind Direction(WD40M_SDU_WVT)
• Dummy altitude for Zeb(alt)
• 2m Average QLI Reference Temperature(RefT2M_AVG)
• 20m Vector Averaged Wind Speed(WS20M_U_WVT)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• 1 hour Present Weather Code(PwCod1hr)
• lon(lon)
• 10m Average Temperature(T10M_AVG)
• 20m Average Calculated Dew Point(DP20M_AVG)
• Average Sonic Static Speed of Sound(SonicS_AVG)
• Standard Deviation of 40m Temperature(T40M_STD)
• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Standard Deviation of 2m Calculated Dew Point(DP2M_STD)
• Standard Deviation of 40m Relative Humidity(RH40M_STD)
• 20m Average QLI Reference Temperature(RefT20M_AVG)
• Standard Deviation of 40m Calculated Vapor Pressure(VP40M_STD)
• Precipitation Rate(PcpRate)
• base time(base_time)
• Atmospheric Pressure(AtmPress)
• Average X Component of Sonic Wind Speed(SonicX_AVG)
• 1 minute Average Visibility(AvgVis1mi)
• Standard Deviation of 2m Vector Averaged Wind Direction(WD2M_SDU_WVT)
• 20m Vector Averaged Wind Direction(WD20M_DU_WVT)
• 10 minute Average Visibility(AvgVis10m)
• Chilled Mirror Dew Point(CMHDP)
• 20m Average Temperature(T20M_AVG)
• Standard Deviation of 10m Temperature(T10M_STD)
• Cumulative Water Sum(CumH2O)
• Cumulative Snow Sum(CumSnow)
• 15 minute Present Weather Code(PwCod15mi)
• Standard Deviation of 20m Temperature(T20M_STD)
• 10m Average QLI Input Voltage(Volt10M_AVG)
• Average Y Component of Sonic Wind Speed(SonicY_AVG)
• 40m Average Relative Humidity(RH40M_AVG)
• Standard Deviation of 10m Vector Averaged Wind Direction(WD10M_SDU_WVT)
• Standard Deviation of 20m Vector Averaged Wind Direction(WD20M_SDU_WVT)
• Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
• 40m Average Temperature(T40M_AVG)
• 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
• 10m Average Calculated Vapor Pressure(VP10M_AVG)
• Instant Present Weather Code(InstPwCod)
• 40m Average QLI Reference Voltage(Volt40M_AVG)
• 10m Vector Averaged Wind Direction(WD10M_DU_WVT)
• Standard Deviation of 2m Relative Humidity(RH2M_STD)
• Datalogger Battery Voltage(Batt_Volt)
• 2m Average Relative Humidity(RH2M_AVG)
• 40m Vector Averaged Wind Speed(WS40M_U_WVT)
• Standard Deviation of 2m Temperature(T2M_STD)
• 2m Average Temperature(T2M_AVG)
• 40m Average Calculated Dew Point(DP40M_AVG)
• Standard Deviation of 2m Calculated Vapor Pressure(VP2M_STD)
• Time offset of tweaks from base_time(time_offset)
• Sonic Vector Averaged Wind Speed(SonicWS_U_WVT)
• Standard Deviation of 20m Relative Humidity(RH20M_STD)
• 40m Average Calculated Vapor Pressure(VP40M_AVG)
• 20m Average Relative Humidity(RH20M_AVG)
• 20m Arithmetic Mean Wind Speed(WS20M_S_WVT)
• 2m Vector Averaged Wind Direction(WD2M_DU_WVT)
• 20m Average QLI Input Voltage(Volt20M_AVG)
• 2m Average QLI Input Voltage(Volt2M_AVG)
• Sonic Arithmetic Mean Wind Speed(SonicWS_S_WVT)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

• azimuth(azimuth)
• Retrieved water vapor density(waterVaporDensity)
• Dummy altitude for Zeb(alt)
• Frequency(frequency)
• Ambient surface absolute temperature(surfaceTemperature)
• elevation(elevation)
• Retrieved cloud liquid water content(liquidWaterContent)
• Ambient surface relative humidity(surfaceRelativeHumidity)
• Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2)
• Lifting condensation level pressure(liftingCondensationLevelPres)
• Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)
• Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)
• base time(base_time)
• Expected root-mean-square error in precipitable water retrieval(totalPrecipitableWaterRmsError)
• Derived virtual temperature(virtualTemperature)
• Surface water vapor density at instrument(surfaceWaterVaporDensity)
• Expected root-mean-square error in liquid water content retrieval(liquidWaterContentRmsError)
• Internal blackbody reference temperature(blackbodyTemperature)
• Level of free convection(levelFreeConvection)
• Interpolated dewpoint temperature(dewpointTemperature)
• lon(lon)
• time(time)
• Expected root-mean-square error in temperature retrieval(temperatureRmsError)
• Interpolated water vapor mixing ratio(waterVaporMixingRatio)
• air temperature (NGM250 predicted)(temperature)
• Time offset of tweaks from base_time(time_offset)
• Microwave brightness temperature(brightnessTemperature)
• Lifting condensation level(liftingCondensationLevel)
• Cloud base height(cloudBaseHeight)
• Derived relative humidity(relativeHumidity)
• Equilibrium level(equilibriumLevel)
• atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure)
• Ambient surface pressure(surfacePressure)
• Retrieved liquid water path(liquidWaterPath)
• Array of heights for the range gates(height)
• lat(lat)
• Expected root-mean-square error in liquid water path retrieval(liquidWaterPathRmsError)
• Equilibrium level pressure(equilibriumLevelPres)
• Expected root-mean-square error in precipitable water retrieval using only
  23.835 and 30.0 GHz(totalPrecipitableWater2RmsError)
• Expected root-mean-square error in water vapor density retrieval(waterVaporDensityRmsError)
• Zenith-pointing infrared temperature at 10um(infraredTemperature)
• Data quality flags(dataQualityFlags)
• Level of free convection pressure(levelFreeConvectionPres)
• Convective Available Potential Energy(cape)
• Expected root-mean-square error in liquid water path retrieval using only 23.835
  and 30.0 GHz(liquidWaterPath2RmsError)
• Flag indicating moisture sensor status(wetWindowFlag)

• Signal to Noise Ratio of the RASS Signal(snr)
• Oblique FFT Bandwidth(oband)
• Rx Bandwidth Switch Code(bswitch)
• lon(lon)
• Beam Number(beam)
• base time(base_time)
• Vertical FFT Bandwidth(vband)
• Ave Time per Average Spectra. Also known as dwell.(spcavetime)
• Number of Pulse Code Bits(pcbits)
• Interpulse Period(ipp)
• Mean atmospheric vertical velocity(mdf)
• Pulse Length(plen)
• Number of valid heights(nheight)
• Dummy altitude for Zeb(alt)
• Delay Time to 1st Gate(dly)
• Time offset of tweaks from base_time(time_offset)
• Radial Velocity Spectral Resolution(vsr)
• elevation(elevation)
• Number of Individual Spectra/Average Spectrum(nspc)
• Spectral Width: vert velocity(specw)
• Individual Spectrum Integration Time(sitime)
• Number of Coherent Samples/spectral point(ncoh)
• Time Domain Integration Time(tditime)
• Height Index(range_gate)
• Pulse Repetition Frequency(prf)
• 1000 * log10(noise signal level: vert vel)(noise)
• Array of heights for each sample time(height_t)
• lat(lat)
• Sample Rate(sampr)
• Height of Center of Last Range Gate(rgl)
• Range Gate Spacing(rgs)
• Height of Center of First Range Gate(rgf)

• 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
• Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
• 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
• 31.4 GHz goodness-of-fit coefficient(r31)
• lon(lon)
• 23.8 GHz goodness-of-fit coefficient(r23)
• lat(lat)
• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• (tknd)
• Mixer kinetic (physical) temperature(tkxc)
• Dummy altitude for Zeb(alt)
• Blackbody kinetic temperature(tkbb)
• 23.8 GHz Blackbody signal(bb23)
• Time offset of tweaks from base_time(time_offset)
• 31.4 GHz blackbody(bb31)
• Temperature correction coefficient at 31.4 GHz(tc31)
• base time(base_time)
• Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
• Temperature correction coefficient at 23.8 GHz(tc23)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
• Actual Azimuth(actaz)
• Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
• Actual elevation angle(actel)
• 31.4 GHz sky signal(tipsky31)
• 23.8 GHz sky signal(tipsky23)
• Ambient temperature(tkair)
• Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
• 31.4 GHz blac2body+noise injection signal(bbn31)
• 23.8 GHz blackbody+noise injection signal(bbn23)

• JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)

NSA/METTWR/C1 - CMH data intermittently poor

CMH aspirator fan intermittently failed causing higher than actual 
             temperature and dew point readings.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - Incorrect Maximum for Precip Values

The max values for cumulative rain sum of 99 mm and the rain rate of 999 mm/hr are 
incorrect.  In communication with the manufacturer it has been found that the manual was in 
error.  The actual max values of the cumulative rain sum is 99.99 mm and the rain rate is 
999.99 mm/hr.

• Precipitation Rate(PcpRate)
• Cumulative Water Sum(CumH2O)

NSA/METTWR/C1 - CMH mirror dirty

The CMH mirror was in need of cleaning.  The data is suspect from 05/28/05 through 
07/04/05 as intermittently poor readings occurred.  After 07/04/05 the data was incorrect as the 
mirror was excessively dirty.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - Tower Maintenance

The booms of the tower were lowered for sensor replacement, calibration, and tower 
maintenance.  During the maintenance and sensor replacement data are frequently missing.  Where 
data are available, they are not or may not be representative because the booms were at 
the base of the tower during the time period listed.

The chilled mirror measurements were not affected by the maintenance.

• 10m Average Calculated Vapor Pressure(VP10M_AVG)
• 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
• Standard Deviation of 2m Temperature(T2M_STD)
• Standard Deviation of 2m Calculated Dew Point(DP2M_STD)
• 20m Average Calculated Vapor Pressure(VP20M_AVG)
• Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
• Standard Deviation of 40m Vector Averaged Wind Direction(WD40M_SDU_WVT)
• Standard Deviation of 10m Calculated Vapor Pressure(VP10M_STD)
• 2m Average Temperature(T2M_AVG)
• Standard Deviation of 40m Relative Humidity(RH40M_STD)
• 40m Average Calculated Dew Point(DP40M_AVG)
• 10m Average Calculated Dew Point(DP10M_AVG)
• 20m Average QLI Reference Temperature(RefT20M_AVG)
• 10m Average Relative Humidity(RH10M_AVG)
• Standard Deviation of 2m Calculated Vapor Pressure(VP2M_STD)
• Standard Deviation of 40m Calculated Vapor Pressure(VP40M_STD)
• 1 minute Average Visibility(AvgVis1mi)
• 10m Average Temperature(T10M_AVG)
• 2m Vector Averaged Wind Direction(WD2M_DU_WVT)
• 40m Arithmetic Mean Wind Speed(WS40M_S_WVT)
• Sonic Vector Averaged Wind Speed(SonicWS_U_WVT)
• 40m Average QLI Reference Temperature(RefT40M_AVG)
• 40m Average Temperature(T40M_AVG)
• Standard Deviation of 20m Relative Humidity(RH20M_STD)
• Standard Deviation of 20m Temperature(T20M_STD)
• 1 hour Present Weather Code(PwCod1hr)
• Standard Deviation of 10m Calculated Dew Point(DP10M_STD)
• 20m Average QLI Input Voltage(Volt20M_AVG)
• Instant Present Weather Code(InstPwCod)
• 10m Vector Averaged Wind Speed(WS10M_U_WVT)
• Present Weather Sensor Alarm(PWSAlarm)
• 10m Average QLI Input Voltage(Volt10M_AVG)
• Precipitation Rate(PcpRate)
• Standard Deviation of 20m Calculated Dew Point(DP20M_STD)
• Standard Deviation of 2m Vector Averaged Wind Direction(WD2M_SDU_WVT)
• 40m Average QLI Reference Voltage(Volt40M_AVG)
• 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
• 20m Average Calculated Dew Point(DP20M_AVG)
• 10m Vector Averaged Wind Direction(WD10M_DU_WVT)
• 20m Average Temperature(T20M_AVG)
• 2m Average Calculated Dew Point(DP2M_AVG)
• Standard Deviation of 2m Relative Humidity(RH2M_STD)
• 20m Vector Averaged Wind Direction(WD20M_DU_WVT)
• Average Sonic Static Speed of Sound(SonicS_AVG)
• 2m Average QLI Reference Temperature(RefT2M_AVG)
• Average Y Component of Sonic Wind Speed(SonicY_AVG)
• 40m Average Calculated Vapor Pressure(VP40M_AVG)
• 20m Average Relative Humidity(RH20M_AVG)
• 2m Average QLI Input Voltage(Volt2M_AVG)
• 2m Average Calculated Vapor Pressure(VP2M_AVG)
• Average X Component of Sonic Wind Speed(SonicX_AVG)
• Standard Deviation of Sonic Vector Averaged Wind Direction(SonicWD_SDU_WVT)
• Standard Deviation of 10m Relative Humidity(RH10M_STD)
• Standard Deviation of 10m Temperature(T10M_STD)
• 2m Average Relative Humidity(RH2M_AVG)
• 40m Average Relative Humidity(RH40M_AVG)
• 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)
• 20m Vector Averaged Wind Speed(WS20M_U_WVT)
• Cumulative Water Sum(CumH2O)
• Standard Deviation of 10m Vector Averaged Wind Direction(WD10M_SDU_WVT)
• Standard Deviation of 40m Temperature(T40M_STD)
• Standard Deviation of 20m Vector Averaged Wind Direction(WD20M_SDU_WVT)
• Cumulative Snow Sum(CumSnow)
• 2m Vector Averaged Wind Speed(WS2M_U_WVT)
• Sonic Arithmetic Mean Wind Speed(SonicWS_S_WVT)
• 40m Vector Averaged Wind Speed(WS40M_U_WVT)
• 10m Average QLI Reference Temperature(RefT10m_AVG)
• 10 minute Average Visibility(AvgVis10m)
• 20m Arithmetic Mean Wind Speed(WS20M_S_WVT)
• 15 minute Present Weather Code(PwCod15mi)
• Standard Deviation of 20m Calculated Vapor Pressure(VP20M_STD)
• Standard Deviation of 40m Calculated Dew Point(DP40M_STD)

NSA/METTWR/C1 - CMH and PWS data missing

The CMH and PWS data are missing and unrecoverable.  A GFCI was tripped causing a loss of 
power to these sensors.   The CMH came back online at 1916 GMT and the PWS came back 
online at 1918 GMT.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Precipitation Rate(PcpRate)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Cumulative Water Sum(CumH2O)
• Chilled Mirror Temperature(CMHTemp)
• 1 hour Present Weather Code(PwCod1hr)
• Instant Present Weather Code(InstPwCod)
• Cumulative Snow Sum(CumSnow)
• Present Weather Sensor Alarm(PWSAlarm)
• 10 minute Average Visibility(AvgVis10m)
• 1 minute Average Visibility(AvgVis1mi)
• 15 minute Present Weather Code(PwCod15mi)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - CMH Data Missing

Data from CMH was missing due to a corroded RS-232 9-Pin connector.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - 2m wind Direction Sensor Failed

The 2m cup wind direction flat lined at 236 degrees.  Sensor failed.

• Standard Deviation of 2m Vector Averaged Wind Direction(WD2M_SDU_WVT)
• 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)
• 2m Vector Averaged Wind Speed(WS2M_U_WVT)
• 2m Vector Averaged Wind Direction(WD2M_DU_WVT)

NSA/METTWR/C1 - Data 1-minute behind

Data from the Barometer, Chilled Mirror Hygrometer and the Present Weather Sensor were 
one-minute behind due to timing problems collecting data from the Serial Data Multiplexer 
that handled these sensors.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Precipitation Rate(PcpRate)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Cumulative Water Sum(CumH2O)
• Chilled Mirror Temperature(CMHTemp)
• 1 hour Present Weather Code(PwCod1hr)
• Instant Present Weather Code(InstPwCod)
• Cumulative Snow Sum(CumSnow)
• Present Weather Sensor Alarm(PWSAlarm)
• 10 minute Average Visibility(AvgVis10m)
• Atmospheric Pressure(AtmPress)
• 1 minute Average Visibility(AvgVis1mi)
• 15 minute Present Weather Code(PwCod15mi)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - Reprocess: Wind direction data incorrect

Wind direction data is off by 30 degrees for all wind sensors.  The 40-m tower was 
misaligned to true north.

• 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
• 20m Vector Averaged Wind Direction(WD20M_DU_WVT)
• 10m Vector Averaged Wind Direction(WD10M_DU_WVT)
• Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
• 2m Vector Averaged Wind Direction(WD2M_DU_WVT)

NSA/METTWR/C1 - CMH Data Not Representative

The intake of the CMH was blocked with hoar frost.  The temperatures measured by the 
chilled mirror and the temperature probe were not representative of the ambient conditions as 
a result.  The RH data calculated from these values is incorrect also.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - CMH Data missing

CMH dew point and temp data was missing. Since Dew Point and Temp data missing RH% value = 
100% during outage.  Corrosion on power plug was athe problem.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - Ultrasonic Wind Sensor Values Incorrect

The values collected from the ultrasonic wind sensor were intermittently incorrect.  Heavy 
wet snow during blizzard condition was interfering with the ultrasonic readings.

• Standard Deviation of Sonic Vector Averaged Wind Direction(SonicWD_SDU_WVT)
• Sonic Vector Averaged Wind Speed(SonicWS_U_WVT)
• Sonic Arithmetic Mean Wind Speed(SonicWS_S_WVT)
• Average Sonic Static Speed of Sound(SonicS_AVG)
• Average Y Component of Sonic Wind Speed(SonicY_AVG)
• Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
• Average X Component of Sonic Wind Speed(SonicX_AVG)

NSA/METTWR/C1 - PWS data missing due to blizzard

PWS was offline and data was missing.  A blizzard consisting of heavy wet snow and strong 
winds caused snow impaction in the optics.  The PWS reported missing data as it was 
unable to measure anything meaningful.

• Precipitation Rate(PcpRate)
• Instant Present Weather Code(InstPwCod)
• Cumulative Snow Sum(CumSnow)
• 10 minute Average Visibility(AvgVis10m)
• Present Weather Sensor Alarm(PWSAlarm)
• 1 minute Average Visibility(AvgVis1mi)
• 15 minute Present Weather Code(PwCod15mi)
• 1 hour Present Weather Code(PwCod1hr)

NSA/METTWR/C1 - 2m Wind Speed Artificially Low

The 2m wind speed values were artificially low due to snow impaction during a heavy 
blizzard.  The cup anemometer heaters could not keep up with the rapid deposition of snow.

• 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)
• 2m Vector Averaged Wind Speed(WS2M_U_WVT)

NSA/METTWR/C1 - CMH temp inaccurate

The CMH Temperature was consistently 4-7 degrees warmer than the 2M, 40M, 20M, and 10M 
temp. Intake fan failure; fan was replaced.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - 10m Wind Speed Low

The 10m wind speed values are too low due to ice accumulation on the cup anemometer.

• 10m Vector Averaged Wind Speed(WS10M_U_WVT)
• 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)

NSA/METTWR/C1 - 10m Wind Speed Intermittently Low

The 10m wind speeds are intermittently too low due to ice accumulation on the cup 
anemometer.

• 10m Vector Averaged Wind Speed(WS10M_U_WVT)
• 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)

NSA/METTWR/C1 - 40m Wind Speeds Intermittently Low

The 40m wind speed values were too low due to ice accumulation on the cup anemometer.

• 40m Arithmetic Mean Wind Speed(WS40M_S_WVT)
• 40m Vector Averaged Wind Speed(WS40M_U_WVT)

NSA/METTWR/C1 - 20m Wind Speeds Intermittently Low

The 20m wind speeds were artificially low due to ice accumulation on the cup anemometer.

• 20m Vector Averaged Wind Speed(WS20M_U_WVT)
• 20m Arithmetic Mean Wind Speed(WS20M_S_WVT)

NSA/METTWR/C1 - CMH Data Missing

CMH data was missing due to it being removed for maintenance.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - CMH Data Suspect

CMH data was suspect due to incorrect calibration caused by procedural errors.  The 
procedures were corrected and a new calibration completed.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - Wind direction measurements suspect

20m wind direction standard deviation was 0 degrees for extended periods of time.  This 
suggests the wind vane was icing up.

• 20m Vector Averaged Wind Direction(WD20M_DU_WVT)
• Standard Deviation of 20m Vector Averaged Wind Direction(WD20M_SDU_WVT)

NSA/METTWR/C1 - Reprocess: Barometric Data Changed from hPa to kPa

Barometric pressure data was converted from hPa to kPa in order to standardize the 
measurement units among ARM sites and to conform to accepted standard units determined by the 
scientific community.

• Atmospheric Pressure(AtmPress)

NSA/METTWR/C1 - Present Weather Sensor data missing or incorrect due to calibration.

The Present Weather Sensor data was missing or incorrect due to calibration checks.

• Precipitation Rate(PcpRate)
• Instant Present Weather Code(InstPwCod)
• Cumulative Snow Sum(CumSnow)
• 10 minute Average Visibility(AvgVis10m)
• Present Weather Sensor Alarm(PWSAlarm)
• 1 minute Average Visibility(AvgVis1mi)
• 15 minute Present Weather Code(PwCod15mi)
• Cumulative Water Sum(CumH2O)
• 1 hour Present Weather Code(PwCod1hr)

NSA/METTWR/C1 - All data from 10m Level Missing

The winch that lowers the tower booms failed.  Manual testing of the motor and winch 
allowed the booms to be lowered briefly and then raised back into position.  A heavy freezing 
rain/icing event added extra weight to the booms.  This extra weight was suspected as the 
cause as to why the 10m boom became disconnected.  After a new motor was installed and 
all booms were lowered and re-raised the 10m level came back on line.

• 10m Average Calculated Vapor Pressure(VP10M_AVG)
• Standard Deviation of 10m Relative Humidity(RH10M_STD)
• Standard Deviation of 10m Temperature(T10M_STD)
• 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
• 10m Vector Averaged Wind Direction(WD10M_DU_WVT)
• Standard Deviation of 10m Calculated Vapor Pressure(VP10M_STD)
• Standard Deviation of 10m Calculated Dew Point(DP10M_STD)
• Standard Deviation of 10m Vector Averaged Wind Direction(WD10M_SDU_WVT)
• 10m Average Calculated Dew Point(DP10M_AVG)
• 10m Vector Averaged Wind Speed(WS10M_U_WVT)
• 10m Average QLI Reference Temperature(RefT10m_AVG)
• 10m Average Relative Humidity(RH10M_AVG)
• 10m Average Temperature(T10M_AVG)
• 10m Average QLI Input Voltage(Volt10M_AVG)

NSA/METTWR/C1 - Missing CMH data

CMH data are missing.  Corrosion in the serial data line connections caused a loss of 
communication with the CMH.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - 10m level loss of power

The 10 meter instrument level lost power so all variables from this level are missing.

• 10m Average Calculated Vapor Pressure(VP10M_AVG)
• Standard Deviation of 10m Relative Humidity(RH10M_STD)
• Standard Deviation of 10m Temperature(T10M_STD)
• 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
• 10m Vector Averaged Wind Direction(WD10M_DU_WVT)
• Standard Deviation of 10m Calculated Vapor Pressure(VP10M_STD)
• Standard Deviation of 10m Calculated Dew Point(DP10M_STD)
• Standard Deviation of 10m Vector Averaged Wind Direction(WD10M_SDU_WVT)
• 10m Average Calculated Dew Point(DP10M_AVG)
• 10m Vector Averaged Wind Speed(WS10M_U_WVT)
• 10m Average QLI Reference Temperature(RefT10m_AVG)
• 10m Average Relative Humidity(RH10M_AVG)
• 10m Average Temperature(T10M_AVG)
• 10m Average QLI Input Voltage(Volt10M_AVG)

NSA/METTWR/C1 - 2m T/RH probe aspirator fan failed

The aspirator fan for the 2m level T/RH probe failed.  This caused higher than normal 
readings for temp and RH and artificially smoothed the data.

• 2m Average Calculated Dew Point(DP2M_AVG)
• 2m Average Temperature(T2M_AVG)
• Standard Deviation of 2m Relative Humidity(RH2M_STD)
• 2m Average Relative Humidity(RH2M_AVG)
• Standard Deviation of 2m Calculated Dew Point(DP2M_STD)
• Standard Deviation of 2m Temperature(T2M_STD)
• Standard Deviation of 2m Calculated Vapor Pressure(VP2M_STD)
• 2m Average Calculated Vapor Pressure(VP2M_AVG)

NSA/METTWR/C1 - Wind direction sensor frozen

After a power outage the 40m wind direction sensor was frozen.  Data from this sensor was 
not representative of the true winds.

• 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
• Standard Deviation of 40m Vector Averaged Wind Direction(WD40M_SDU_WVT)

NSA/METTWR/C1 - CMH Sensor Calibrated Incorrectly

The CMH temp and DP were higher than the co-located T/RH probe at the 2m level.  An 
incorrect calibration along with a failing thermistor caused the readings to be incorrect for 
both measured values Temp and Dew Point.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - 40m wind sensor heater failure

The 40m wind direction became frozen at times.  The values from the sensor were flat-lined 
(stdev = 0) much of the time and did not match sensors from other levels.

• 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
• Standard Deviation of 40m Vector Averaged Wind Direction(WD40M_SDU_WVT)

NSA/METTWR/C1 - 40m Wind Direction Data Suspect

The 40m wind direction data was suspect due to icing on the vane or a failing shafter 
heater or a combination of both.  The affected data can be easily seen on comparison plots 
with other levels data or by checking the standard deviation of the 40m wind direction.  
Any standard deviation of less than 0.10 degrees for the 40m level suggest a sluggish/ice 
affected sensor.

• 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
• Standard Deviation of 40m Vector Averaged Wind Direction(WD40M_SDU_WVT)

NSA/METTWR/C1 - PWS Data Questionable

There was a degradation in the PWS lenses.  New lenses were installed on 08/28/2007 but a 
proper calibration was not conducted until 10/10/2007.  Data  during the listed time 
period should be used with caution.

• Precipitation Rate(PcpRate)
• Instant Present Weather Code(InstPwCod)
• Cumulative Snow Sum(CumSnow)
• 10 minute Average Visibility(AvgVis10m)
• Present Weather Sensor Alarm(PWSAlarm)
• 1 minute Average Visibility(AvgVis1mi)
• 15 minute Present Weather Code(PwCod15mi)
• Cumulative Water Sum(CumH2O)
• 1 hour Present Weather Code(PwCod1hr)

NSA/METTWR/C1 - 20m RH Data Questionable

The 20m RH data was questionable at times.  When the data appeared to be poor was when the 
2m and 20m agreed better than the 20m and the 40m and/or 10m.

• Standard Deviation of 20m Calculated Dew Point(DP20M_STD)
• 20m Average Calculated Dew Point(DP20M_AVG)
• 20m Average Calculated Vapor Pressure(VP20M_AVG)
• Standard Deviation of 20m Relative Humidity(RH20M_STD)
• 20m Average Relative Humidity(RH20M_AVG)
• Standard Deviation of 20m Calculated Vapor Pressure(VP20M_STD)

NSA/METTWR/C1 - Intermittent missing data

Intermittent failure of the CMH to communicate with the logging system occurred on a daily 
basis.  This problem occurred anywhere from 4 to 8 hrs.  Problem began after maintenance 
to replace failing aspirator fan on 03/13/2008.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - 2m Wind Direction Sensor Freezing

The 2m wind direction was failing.  It began to exhibit instances of no movement 
suggesting it was frozen.  After some time it began to make erratic measurements compared to the 
co-located Ultrasonic and compared to the directions at the other levels.

• Standard Deviation of 2m Vector Averaged Wind Direction(WD2M_SDU_WVT)
• 2m Vector Averaged Wind Direction(WD2M_DU_WVT)

NSA/METTWR/C1 - CMH Intake Fan Failure

The CMH intake fan failed causing the dew point and temp data to be incorrect.

If users need only T/RH and derived variables they can use the 2m data collected using the 
HMP-45D probes.  CMH data are unrecoverable.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - 2m Datalogger Failed

The 2m temperature, wind speed, wind direction, and relative humidity were reporting the 
missing value (-9999).

• Standard Deviation of 2m Vector Averaged Wind Direction(WD2M_SDU_WVT)
• 2m Average Relative Humidity(RH2M_AVG)
• 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)
• Standard Deviation of 2m Temperature(T2M_STD)
• Standard Deviation of 2m Calculated Dew Point(DP2M_STD)
• 2m Average Temperature(T2M_AVG)
• 2m Average Calculated Dew Point(DP2M_AVG)
• Standard Deviation of 2m Relative Humidity(RH2M_STD)
• 2m Vector Averaged Wind Speed(WS2M_U_WVT)
• 2m Average QLI Reference Temperature(RefT2M_AVG)
• Standard Deviation of 2m Calculated Vapor Pressure(VP2M_STD)
• 2m Average QLI Input Voltage(Volt2M_AVG)
• 2m Average Calculated Vapor Pressure(VP2M_AVG)
• 2m Vector Averaged Wind Direction(WD2M_DU_WVT)

NSA/METTWR/C1 - CMH required Calibration

The Chilled Mirror was showing some signs of being out of calibration.  Temperatures were 
at times higher than co-located temp probes and the dew point temperature values at times 
were not consistent with co-located RH sensors.

• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Chilled Mirror Dew Point(CMHDP)
• Chilled Mirror Temperature(CMHTemp)
• Chilled Mirror Calculated Relative Humidity(CMHRH)

NSA/METTWR/C1 - 2m level data incorrect

The 2m data for temp, RH, dew point, wind speed wind direction & vapor pressure were 
incorrect.  The voltage values for the datalogger at that level were reporting as 60V with 
excursions to 100V.  These values should have damaged the logger at that level.  After an 
extended power outage on 08/04 the data all became reasonable. There is no explanation as 
to the cause of this failure.

• Standard Deviation of 2m Vector Averaged Wind Direction(WD2M_SDU_WVT)
• 2m Average Relative Humidity(RH2M_AVG)
• 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)
• Standard Deviation of 2m Temperature(T2M_STD)
• Standard Deviation of 2m Calculated Dew Point(DP2M_STD)
• 2m Average Temperature(T2M_AVG)
• 2m Average Calculated Dew Point(DP2M_AVG)
• Standard Deviation of 2m Relative Humidity(RH2M_STD)
• 2m Vector Averaged Wind Speed(WS2M_U_WVT)
• 2m Average QLI Reference Temperature(RefT2M_AVG)
• Standard Deviation of 2m Calculated Vapor Pressure(VP2M_STD)
• 2m Average QLI Input Voltage(Volt2M_AVG)
• 2m Average Calculated Vapor Pressure(VP2M_AVG)
• 2m Vector Averaged Wind Direction(WD2M_DU_WVT)

NSA/TOWER - Mislabeled tower sensors

The NSA tower data displayed on the local computer screen had the height 
mislabeled. Data written to files were correct.  When the data acquisition 
program was fixed on 22 OCT 1998, only the computer display was changed.

• Barometric Pressure(atmos_pressure)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Relative humidity minimum(relh_min)
• Maximum Wind Direction(wind_dir_max)
• Mean Vapor Pressure(vap_pres_mean)
• Internal Temperature out of range error(internal_temp_out_of_range_error)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Out of Range Error(atmos_pressure_out_of_range_error)
• Dummy altitude for Zeb(alt)
• Std Dev of Wind Speed(wind_spd_sd)
• Minimum Wind Speed(wind_spd_min)
• Std Dev of Wind Direction(wind_dir_sd)
• Maximum Vapor Pressure(vap_pres_max)
• Mean Wind Speed(wind_spd_mean)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• base time(base_time)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Std Dev of Air Temperature(temp_sd)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• lon(lon)
• Wind Speed out of range error(win_spd_out_of_range_error)
• Minimum Wind Direction(wind_dir_min)
• Air Temperature out of range error(temp_out_of_range_error)
• Relative Humidity out of range error(relh_out_of_range_error)
• Read Timeout Error(atmos_pressure_read_timeout_error)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Number of timeouts reading the met tower data by height(read_timeout_count)
• Mean Air Temperature or Hardware Error(temp_mean)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Minimum Vapor Pressure(vap_pres_min)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Air Temperature Hardware Error(temp_hardware_error)
• GPS raw data filename(filename)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Temperature minimum(temp_min)
• Mean Relative Humidity(relh_mean)
• Maximum Wind Speed(wind_spd_max)
• lat(lat)
• Temperature maximum(temp_max)
• Relative humidity maximum(relh_max)
• Internal Voltage out of range error(internal_voltage_out_of_range_error)
• Time offset of tweaks from base_time(time_offset)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• Wind Direction out of range error(win_dir_out_of_range_error)

• null(Raw data stream - documentation not supported)

NSA/METTOWER - Questionable NSA Met-tower wind data

The data analysis software for the NSA Met_tower system was upgraded at 2200 GMT
on 8 SEP 1999.  The upgrade included replacement of missing data with -99.99's
when the routine that polled the Met-tower sensors timed out.  This 
resulted in large negative spikes in the 1-min averages.  These spikes 
almost always occurred during the first several 1-min periods of a 
half-hour data processing routine.
On 25 OCT 1999 at 2300 the routine that replaced missing data was changed to 
insert the previous 1-min averaged data instead of -99.99.  Since at the most
only one or two values are missing in ay averaging period, this change 
results in a reasonable estimate of the true mean values

• Barometric Pressure(atmos_pressure)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Relative humidity minimum(relh_min)
• Maximum Wind Direction(wind_dir_max)
• Mean Vapor Pressure(vap_pres_mean)
• Internal Temperature out of range error(internal_temp_out_of_range_error)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Out of Range Error(atmos_pressure_out_of_range_error)
• Dummy altitude for Zeb(alt)
• Std Dev of Wind Speed(wind_spd_sd)
• Minimum Wind Speed(wind_spd_min)
• Std Dev of Wind Direction(wind_dir_sd)
• Maximum Vapor Pressure(vap_pres_max)
• Mean Wind Speed(wind_spd_mean)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• base time(base_time)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Std Dev of Air Temperature(temp_sd)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• lon(lon)
• Wind Speed out of range error(win_spd_out_of_range_error)
• Minimum Wind Direction(wind_dir_min)
• Air Temperature out of range error(temp_out_of_range_error)
• Relative Humidity out of range error(relh_out_of_range_error)
• Read Timeout Error(atmos_pressure_read_timeout_error)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Number of timeouts reading the met tower data by height(read_timeout_count)
• Mean Air Temperature or Hardware Error(temp_mean)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Minimum Vapor Pressure(vap_pres_min)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Air Temperature Hardware Error(temp_hardware_error)
• GPS raw data filename(filename)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Temperature minimum(temp_min)
• Mean Relative Humidity(relh_mean)
• Maximum Wind Speed(wind_spd_max)
• lat(lat)
• Temperature maximum(temp_max)
• Relative humidity maximum(relh_max)
• Internal Voltage out of range error(internal_voltage_out_of_range_error)
• Time offset of tweaks from base_time(time_offset)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• Wind Direction out of range error(win_dir_out_of_range_error)

• null(Raw data stream - documentation not supported)

NSA/METTOWER - Questionable NSA Met-tower wind data

The data analysis software for the NSA Met-tower system was upgraded at 2200 GMT
on 8 SEP 1999.  The upgrade included insertion of  -99.99's for the wind vectors 
when the wind speed or direction were either missing or equal to 0.  This 
resulted in incorrect vector averaged wind speed, wind direction, and 
standard deviation of wind direction.  When this occurred, the 
vector-averaged wind speed and standard deviation of wind direction 
were often abnormally high and the vector-averaged wind direction
 was often approximately 225 deg.  Starting at 2300 GMT on 25 OCT 99
missing wind data were replaced by the previous 1-min average and 
starting at 2200 GMT on 15 NOV 1999 the computed wind vectors were 
used whenever wind speeds or wind directions were 0.

• Barometric Pressure(atmos_pressure)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Relative humidity minimum(relh_min)
• Maximum Wind Direction(wind_dir_max)
• Mean Vapor Pressure(vap_pres_mean)
• Internal Temperature out of range error(internal_temp_out_of_range_error)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Out of Range Error(atmos_pressure_out_of_range_error)
• Dummy altitude for Zeb(alt)
• Std Dev of Wind Speed(wind_spd_sd)
• Minimum Wind Speed(wind_spd_min)
• Std Dev of Wind Direction(wind_dir_sd)
• Maximum Vapor Pressure(vap_pres_max)
• Mean Wind Speed(wind_spd_mean)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• base time(base_time)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Std Dev of Air Temperature(temp_sd)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• lon(lon)
• Wind Speed out of range error(win_spd_out_of_range_error)
• Minimum Wind Direction(wind_dir_min)
• Air Temperature out of range error(temp_out_of_range_error)
• Relative Humidity out of range error(relh_out_of_range_error)
• Read Timeout Error(atmos_pressure_read_timeout_error)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Number of timeouts reading the met tower data by height(read_timeout_count)
• Mean Air Temperature or Hardware Error(temp_mean)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Minimum Vapor Pressure(vap_pres_min)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Air Temperature Hardware Error(temp_hardware_error)
• GPS raw data filename(filename)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Temperature minimum(temp_min)
• Mean Relative Humidity(relh_mean)
• Maximum Wind Speed(wind_spd_max)
• lat(lat)
• Temperature maximum(temp_max)
• Relative humidity maximum(relh_max)
• Internal Voltage out of range error(internal_voltage_out_of_range_error)
• Time offset of tweaks from base_time(time_offset)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• Wind Direction out of range error(win_dir_out_of_range_error)

• null(Raw data stream - documentation not supported)

NSA/METOWER - Reprocess: Incorrect NSA wind direction minima and maxima

From the time of installation of the NSA C1 Met-tower system on 24 MAR 1998
until 29 NOV 1999 all wind direction minima and maxima were reported as raw
(unrotated) data.  In order to obtain correct minima and maxima 30 deg must
be subtracted from the value.  All mean wind directions were computed from
rotated (corrected) data.

• Barometric Pressure(atmos_pressure)
• Std Dev of Vapor Pressure(vap_pres_sd)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Relative humidity minimum(relh_min)
• Maximum Wind Direction(wind_dir_max)
• Mean Vapor Pressure(vap_pres_mean)
• Internal Temperature out of range error(internal_temp_out_of_range_error)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Out of Range Error(atmos_pressure_out_of_range_error)
• Dummy altitude for Zeb(alt)
• Std Dev of Wind Speed(wind_spd_sd)
• Minimum Wind Speed(wind_spd_min)
• Std Dev of Wind Direction(wind_dir_sd)
• Maximum Vapor Pressure(vap_pres_max)
• Mean Wind Speed(wind_spd_mean)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• base time(base_time)
• Std Dev of Dew Point Temperature(dew_pt_temp_sd)
• Std Dev of Air Temperature(temp_sd)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• lon(lon)
• Wind Speed out of range error(win_spd_out_of_range_error)
• Minimum Wind Direction(wind_dir_min)
• Air Temperature out of range error(temp_out_of_range_error)
• Relative Humidity out of range error(relh_out_of_range_error)
• Read Timeout Error(atmos_pressure_read_timeout_error)
• PTB Serial Error(atmos_pressure_PTB_serial_error)
• Number of timeouts reading the met tower data by height(read_timeout_count)
• Mean Air Temperature or Hardware Error(temp_mean)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Minimum Vapor Pressure(vap_pres_min)
• Dew Point Temperature out of range error(dew_pt_temp_out_of_range_error)
• Air Temperature Hardware Error(temp_hardware_error)
• GPS raw data filename(filename)
• Vapor Pressure out of range error(vap_pres_out_of_range_error)
• Temperature minimum(temp_min)
• Mean Relative Humidity(relh_mean)
• Maximum Wind Speed(wind_spd_max)
• lat(lat)
• Temperature maximum(temp_max)
• Relative humidity maximum(relh_max)
• Internal Voltage out of range error(internal_voltage_out_of_range_error)
• Time offset of tweaks from base_time(time_offset)
• Dew Point Temperature Hardware Error(dew_pt_hardware_error)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• Wind Direction out of range error(win_dir_out_of_range_error)

• null(Raw data stream - documentation not supported)