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)
• wind_spd_sd
• Maximum Vapor Pressure(vap_pres_max)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• dew_pt_temp_sd
• relh_sd
• win_spd_out_of_range_error
• temp_out_of_range_error
• dew_pt_temp_out_of_range_error
• temp_hardware_error
• Temperature minimum(temp_min)
• vap_pres_out_of_range_error
• Temperature maximum(temp_max)
• Relative humidity maximum(relh_max)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• win_dir_out_of_range_error
• 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)
• wind_dir_sd
• Mean Wind Speed(wind_spd_mean)
• temp_sd
• Minimum Wind Direction(wind_dir_min)
• 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)
• Relative humidity mean(relh_mean)
• Maximum Wind Speed(wind_spd_max)
• dew_pt_hardware_error

• Maximum Wind Speed(wind_spd_max)
• Mean Wind Speed(wind_spd_mean)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• temp_hardware_error
• dew_pt_temp_out_of_range_error
• Temperature maximum(temp_max)
• dew_pt_temp_sd
• vap_pres_sd
• Mean Air Temperature or Hardware Error(temp_mean)
• Relative humidity mean(relh_mean)
• Minimum Vapor Pressure(vap_pres_min)
• relh_sd
• Temperature minimum(temp_min)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• wind_spd_sd
• 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_dir_out_of_range_error
• relh_out_of_range_error
• Relative humidity maximum(relh_max)
• Relative humidity minimum(relh_min)
• dew_pt_hardware_error
• wind_spd_out_of_range_error
• temp_sd
• Mean Vapor Pressure(vap_pres_mean)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• wind_dir_sd
• vap_pres_out_of_range_error
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Maximum Dew Point Temperature(dew_pt_temp_max)

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.

• 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)
• wind_spd_sd
• Mean Wind Speed(wind_spd_mean)
• Maximum Wind Speed(wind_spd_max)
• Vector-averaged Wind Speed(wind_spd_vec_avg)

• Maximum Wind Speed(wind_spd_max)
• wind_spd_out_of_range_error
• Mean Wind Speed(wind_spd_mean)
• 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.

• wind_dir_sd
• 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)
• win_dir_out_of_range_error

• wind_dir_out_of_range_error
• 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)
• present_weather_sensor_NWS_code
• Precipitation rate(precip_rate)
• one_min_pw_code_out_of_range_error
• cumul_snow_out_of_range_error
• one_minute_PW_code
• One Minute Visibility(one_minute_visibility)
• ten_minute_vis_out_of_range_error
• one_hour_PW_code
• one_minute_vis_out_of_range_error
• one_hour_pw_code_out_of_range_error
• ten_minute_PW_code
• cumul_liq_water_equiv_out_of_range_err
• precip_rate_out_of_range_error
• ten_min_pw_code_out_of_range_error
• pws_read_timeout_error
• pws_serial_error
• Cumulative Snow(cumulative_snow)

• Maximum Vapor Pressure(vap_pres_max)
• dew_pt_temp_sd
• relh_sd
• win_spd_out_of_range_error
• temp_out_of_range_error
• dew_pt_temp_out_of_range_error
• temp_hardware_error
• vap_pres_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)
• wind_dir_sd
• temp_sd
• relh_out_of_range_error
• atmos_pressure_read_timeout_error
• atmos_pressure_PTB_serial_error
• Mean Air Temperature or Hardware Error(temp_mean)
• serial_port_error
• Maximum Wind Speed(wind_spd_max)
• dew_pt_hardware_error
• Barometric Pressure(atmos_pressure)
• Maximum Wind Direction(wind_dir_max)
• Mean Vapor Pressure(vap_pres_mean)
• wind_spd_sd
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Temperature minimum(temp_min)
• Relative humidity maximum(relh_max)
• Temperature maximum(temp_max)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• vap_pres_sd
• internal_temp_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)
• Relative humidity mean(relh_mean)
• internal_voltage_out_of_range_error

• Maximum Wind Speed(wind_spd_max)
• Mean Wind Speed(wind_spd_mean)
• temp_hardware_error
• dew_pt_temp_sd
• vap_pres_sd
• Mean Air Temperature or Hardware Error(temp_mean)
• Relative humidity mean(relh_mean)
• atmos_pressure_out_of_range_error
• relh_sd
• Minimum Dew Point Temperature(dew_pt_temp_min)
• wind_spd_sd
• 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_dir_out_of_range_error
• internal_temp_out_of_range_error
• Relative humidity maximum(relh_max)
• Relative humidity minimum(relh_min)
• wind_spd_out_of_range_error
• temp_sd
• Mean Vapor Pressure(vap_pres_mean)
• wind_dir_sd
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• internal_voltage_out_of_range_error
• Mean Dew Point Temperature(dew_pt_temp_mean)
• dew_pt_temp_out_of_range_error
• Temperature maximum(temp_max)
• atmos_pressure_PTB_serial_error
• Minimum Vapor Pressure(vap_pres_min)
• read_timeout_count
• Temperature minimum(temp_min)
• Barometric Pressure(atmos_pressure)
• relh_out_of_range_error
• dew_pt_hardware_error
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• atmos_pressure_read_timeout_error
• vap_pres_out_of_range_error
• Maximum Dew Point Temperature(dew_pt_temp_max)

• Ten Minute Visibility(ten_minute_visibility)
• one_min_pw_code_out_of_range_error
• one_minute_vis_out_of_range_error
• one_hour_pw_code_out_of_range_error
• pws_serial_error
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• Precipitation rate(precip_rate)
• ten_minute_vis_out_of_range_error
• one_hour_PW_code
• precip_rate_out_of_range_error
• One Minute Visibility(one_minute_visibility)
• Cumulative Snow(cumulative_snow)
• cumul_liq_water_equiv_out_of_range_err
• ten_min_pw_code_out_of_range_error
• pws_read_timeout_error
• cumul_snow_out_of_range_error
• present_weather_sensor_NWS_code
• ten_minute_PW_code
• one_minute_PW_code

• precip_read_timeout_error
• Precipitation rate(precip_rate)
• precip_serial_error
• precip_no_data_error
• precip_NWS_code
• precip_out_of_range_error
• precip_daily_accum

• precip_out_of_range_error
• Precipitation rate(precip_rate)
• precip_NWS_code
• precip_daily_accum
• precip_no_data_error
• precip_serial_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)
• present_weather_sensor_NWS_code
• Precipitation rate(precip_rate)
• one_min_pw_code_out_of_range_error
• cumul_snow_out_of_range_error
• one_minute_PW_code
• One Minute Visibility(one_minute_visibility)
• ten_minute_vis_out_of_range_error
• one_hour_PW_code
• one_minute_vis_out_of_range_error
• one_hour_pw_code_out_of_range_error
• ten_minute_PW_code
• cumul_liq_water_equiv_out_of_range_err
• precip_rate_out_of_range_error
• ten_min_pw_code_out_of_range_error
• pws_read_timeout_error
• pws_serial_error
• Cumulative Snow(cumulative_snow)

• Maximum Vapor Pressure(vap_pres_max)
• dew_pt_temp_sd
• relh_sd
• win_spd_out_of_range_error
• temp_out_of_range_error
• dew_pt_temp_out_of_range_error
• temp_hardware_error
• vap_pres_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)
• wind_dir_sd
• temp_sd
• relh_out_of_range_error
• atmos_pressure_read_timeout_error
• atmos_pressure_PTB_serial_error
• Mean Air Temperature or Hardware Error(temp_mean)
• serial_port_error
• Maximum Wind Speed(wind_spd_max)
• dew_pt_hardware_error
• Barometric Pressure(atmos_pressure)
• Maximum Wind Direction(wind_dir_max)
• Mean Vapor Pressure(vap_pres_mean)
• wind_spd_sd
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Temperature minimum(temp_min)
• Relative humidity maximum(relh_max)
• Temperature maximum(temp_max)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• vap_pres_sd
• internal_temp_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)
• Relative humidity mean(relh_mean)
• internal_voltage_out_of_range_error

• Maximum Wind Speed(wind_spd_max)
• Mean Wind Speed(wind_spd_mean)
• temp_hardware_error
• dew_pt_temp_sd
• vap_pres_sd
• Mean Air Temperature or Hardware Error(temp_mean)
• Relative humidity mean(relh_mean)
• atmos_pressure_out_of_range_error
• relh_sd
• Minimum Dew Point Temperature(dew_pt_temp_min)
• wind_spd_sd
• 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_dir_out_of_range_error
• internal_temp_out_of_range_error
• Relative humidity maximum(relh_max)
• Relative humidity minimum(relh_min)
• wind_spd_out_of_range_error
• temp_sd
• Mean Vapor Pressure(vap_pres_mean)
• wind_dir_sd
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• internal_voltage_out_of_range_error
• Mean Dew Point Temperature(dew_pt_temp_mean)
• dew_pt_temp_out_of_range_error
• Temperature maximum(temp_max)
• atmos_pressure_PTB_serial_error
• Minimum Vapor Pressure(vap_pres_min)
• read_timeout_count
• Temperature minimum(temp_min)
• Barometric Pressure(atmos_pressure)
• relh_out_of_range_error
• dew_pt_hardware_error
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• atmos_pressure_read_timeout_error
• vap_pres_out_of_range_error
• Maximum Dew Point Temperature(dew_pt_temp_max)

• Ten Minute Visibility(ten_minute_visibility)
• one_min_pw_code_out_of_range_error
• one_minute_vis_out_of_range_error
• one_hour_pw_code_out_of_range_error
• pws_serial_error
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• Precipitation rate(precip_rate)
• ten_minute_vis_out_of_range_error
• one_hour_PW_code
• precip_rate_out_of_range_error
• One Minute Visibility(one_minute_visibility)
• Cumulative Snow(cumulative_snow)
• cumul_liq_water_equiv_out_of_range_err
• ten_min_pw_code_out_of_range_error
• pws_read_timeout_error
• cumul_snow_out_of_range_error
• present_weather_sensor_NWS_code
• ten_minute_PW_code
• one_minute_PW_code

• precip_read_timeout_error
• Precipitation rate(precip_rate)
• precip_serial_error
• precip_no_data_error
• precip_NWS_code
• precip_out_of_range_error
• precip_daily_accum

• precip_out_of_range_error
• Precipitation rate(precip_rate)
• precip_NWS_code
• precip_daily_accum
• precip_no_data_error
• precip_serial_error
• precip_read_timeout_error

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)
• 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_spd_out_of_range_error
• Mean Wind Speed(wind_spd_mean)
• 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)
• alt
• wind_spd_sd
• Maximum Vapor Pressure(vap_pres_max)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• base_time
• relh_sd
• dew_pt_temp_sd
• lon
• win_spd_out_of_range_error
• temp_out_of_range_error
• dew_pt_temp_out_of_range_error
• temp_hardware_error
• Temperature minimum(temp_min)
• vap_pres_out_of_range_error
• Temperature maximum(temp_max)
• Relative humidity maximum(relh_max)
• time_offset
• Maximum Dew Point Temperature(dew_pt_temp_max)
• win_dir_out_of_range_error
• vap_pres_sd
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Relative humidity minimum(relh_min)
• internal_temp_out_of_range_error
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• atmos_pressure_out_of_range_error
• Minimum Wind Speed(wind_spd_min)
• wind_dir_sd
• Mean Wind Speed(wind_spd_mean)
• temp_sd
• Minimum Wind Direction(wind_dir_min)
• relh_out_of_range_error
• atmos_pressure_PTB_serial_error
• atmos_pressure_read_timeout_error
• Mean Air Temperature or Hardware Error(temp_mean)
• serial_port_error
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Minimum Vapor Pressure(vap_pres_min)
• Relative humidity mean(relh_mean)
• Maximum Wind Speed(wind_spd_max)
• lat
• internal_voltage_out_of_range_error
• dew_pt_hardware_error

• Maximum Wind Speed(wind_spd_max)
• time_offset
• internal_voltage_out_of_range_error
• base_time
• Mean Wind Speed(wind_spd_mean)
• Mean Dew Point Temperature(dew_pt_temp_mean)
• temp_hardware_error
• dew_pt_temp_out_of_range_error
• Temperature maximum(temp_max)
• atmos_pressure_PTB_serial_error
• dew_pt_temp_sd
• vap_pres_sd
• Mean Air Temperature or Hardware Error(temp_mean)
• Minimum Vapor Pressure(vap_pres_min)
• Relative humidity mean(relh_mean)
• read_timeout_count
• atmos_pressure_out_of_range_error
• relh_sd
• alt
• Temperature minimum(temp_min)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• wind_spd_sd
• 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_dir_out_of_range_error
• internal_temp_out_of_range_error
• Barometric Pressure(atmos_pressure)
• relh_out_of_range_error
• Relative humidity maximum(relh_max)
• Relative humidity minimum(relh_min)
• dew_pt_hardware_error
• wind_spd_out_of_range_error
• temp_sd
• Mean Vapor Pressure(vap_pres_mean)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• wind_dir_sd
• lat
• lon
• atmos_pressure_read_timeout_error
• vap_pres_out_of_range_error
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Maximum Dew Point Temperature(dew_pt_temp_max)

NSA/METTIPTWR/C2 - Data missing due to Power Failure

No data were collected due to a power failure.

• Raw data stream - documentation not supported

• Mean Dew Point Temperature(dew_pt_temp_mean)
• Temperature maximum(temp_max)
• base_time
• lat
• Minimum Wind Direction(wind_dir_min)
• temp_sd_diff
• temp_hardware_error
• Maximum Wind Direction(wind_dir_max)
• temp_sd
• Minimum Dew Point Temperature(dew_pt_temp_min)
• wind_spd_sd
• temp_out_of_range_error
• vap_pres_out_of_range_error
• read_timeout_count
• relh_out_of_range_error
• internal_temp_out_of_range_error
• Relative humidity mean(relh_mean)
• temp_min_diff
• temp_mean_diff
• atmos_pressure_out_of_range_error
• Maximum Dew Point Temperature(dew_pt_temp_max)
• alt
• Temperature minimum(temp_min)
• atmos_pressure_read_timeout_error
• Mean Wind Speed(wind_spd_mean)
• Minimum Wind Speed(wind_spd_min)
• Maximum Wind Speed(wind_spd_max)
• dew_pt_temp_sd
• wind_dir_out_of_range_error
• Relative humidity minimum(relh_min)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• lon
• wind_dir_sd
• internal_voltage_out_of_range
• atmos_pressure_PTB_serial_error
• temp_max_diff
• Relative humidity maximum(relh_max)
• dew_pt_hardware_error
• time_offset
• Mean Air Temperature or Hardware Error(temp_mean)
• Barometric Pressure(atmos_pressure)
• wind_spd_out_of_range_error
• relh_sd
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Minimum Vapor Pressure(vap_pres_min)
• dew_pt_temp_out_of_range_error
• Maximum Vapor Pressure(vap_pres_max)
• Mean Vapor Pressure(vap_pres_mean)
• vap_pres_sd

• Mean Vapor Pressure(vap_pres_mean)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Mean Wind Speed(wind_spd_mean)
• alt
• time_offset
• vap_pres_sd
• Relative humidity mean(relh_mean)
• internal_voltage_out_of_range
• vap_pres_out_of_range_error
• temp_sd
• temp_out_of_range_error
• relh_sd
• read_timeout_count
• temp_max_diff
• wind_spd_out_of_range_error
• wind_spd_sd
• Barometric Pressure(atmos_pressure)
• lon
• internal_temp_out_of_range_error
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Temperature maximum(temp_max)
• Temperature minimum(temp_min)
• wind_dir_out_of_range_error
• atmos_pressure_PTB_serial_error
• atmos_pressure_out_of_range_error
• temp_min_diff
• temp_mean_diff
• Mean Air Temperature or Hardware Error(temp_mean)
• temp_hardware_error
• Relative humidity maximum(relh_max)
• Relative humidity minimum(relh_min)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• lat
• Maximum Vapor Pressure(vap_pres_max)
• dew_pt_hardware_error
• Minimum Dew Point Temperature(dew_pt_temp_min)
• Maximum Wind Direction(wind_dir_max)
• Minimum Wind Direction(wind_dir_min)
• Minimum Vapor Pressure(vap_pres_min)
• dew_pt_temp_out_of_range_error
• dew_pt_temp_sd
• base_time
• wind_dir_sd
• Maximum Dew Point Temperature(dew_pt_temp_max)
• temp_sd_diff
• Minimum Wind Speed(wind_spd_min)
• Maximum Wind Speed(wind_spd_max)
• atmos_pressure_read_timeout_error
• relh_out_of_range_error

NSA/BMET/C2 - NSA/METTIPTOWER/C2 - C2 MET DATA MISSING

Due to unknown wiring differences and pin changes by Vaisala to their Wind Speed and 
Direction sensors, a power feedback into the QLI data collector occurred.  This caused an 
overload which shut the QLI data collector down.  Once trouble shooting pinpointed the power 
feedback, wiring diagrams were created and the differences were found.  Wiring was 
changed to prevent and remove the power feedback.

• Mean Dew Point Temperature(dew_pt_temp_mean)
• Mean Wind Speed(wind_spd_mean)
• Minimum Wind Speed(wind_spd_min)
• Maximum Wind Speed(wind_spd_max)
• dew_pt_temp_sd
• Temperature maximum(temp_max)
• wind_dir_out_of_range_error
• Minimum Wind Direction(wind_dir_min)
• temp_sd_diff
• temp_hardware_error
• Maximum Wind Direction(wind_dir_max)
• temp_sd
• Relative humidity minimum(relh_min)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Minimum Dew Point Temperature(dew_pt_temp_min)
• wind_spd_sd
• internal_voltage_out_of_range
• wind_dir_sd
• temp_max_diff
• Relative humidity maximum(relh_max)
• temp_out_of_range_error
• dew_pt_hardware_error
• read_timeout_count
• vap_pres_out_of_range_error
• relh_out_of_range_error
• internal_temp_out_of_range_error
• Mean Air Temperature or Hardware Error(temp_mean)
• Relative humidity mean(relh_mean)
• temp_min_diff
• wind_spd_out_of_range_error
• relh_sd
• temp_mean_diff
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Maximum Dew Point Temperature(dew_pt_temp_max)
• Minimum Vapor Pressure(vap_pres_min)
• dew_pt_temp_out_of_range_error
• Maximum Vapor Pressure(vap_pres_max)
• Mean Vapor Pressure(vap_pres_mean)
• vap_pres_sd
• Temperature minimum(temp_min)

• Mean Vapor Pressure(vap_pres_mean)
• Vector-averaged Wind Direction(wind_dir_vec_avg)
• Mean Wind Speed(wind_spd_mean)
• Relative humidity maximum(relh_max)
• Relative humidity minimum(relh_min)
• Vector-averaged Wind Speed(wind_spd_vec_avg)
• Maximum Vapor Pressure(vap_pres_max)
• dew_pt_hardware_error
• Minimum Dew Point Temperature(dew_pt_temp_min)
• vap_pres_sd
• Relative humidity mean(relh_mean)
• internal_voltage_out_of_range
• vap_pres_out_of_range_error
• temp_sd
• temp_out_of_range_error
• Maximum Wind Direction(wind_dir_max)
• relh_sd
• temp_max_diff
• read_timeout_count
• Minimum Wind Direction(wind_dir_min)
• wind_spd_out_of_range_error
• Minimum Vapor Pressure(vap_pres_min)
• dew_pt_temp_out_of_range_error
• wind_spd_sd
• dew_pt_temp_sd
• internal_temp_out_of_range_error
• Mean Dew Point Temperature(dew_pt_temp_mean)
• Temperature maximum(temp_max)
• Temperature minimum(temp_min)
• wind_dir_sd
• wind_dir_out_of_range_error
• Maximum Dew Point Temperature(dew_pt_temp_max)
• temp_sd_diff
• temp_min_diff
• Minimum Wind Speed(wind_spd_min)
• Maximum Wind Speed(wind_spd_max)
• temp_mean_diff
• Mean Air Temperature or Hardware Error(temp_mean)
• temp_hardware_error
• relh_out_of_range_error

NSA/GNDRAD/C1 - Instrument Maintenance

Tip tower was lowered for instrument maintenance.  Data taken 
              during this period are corrupt.

• psp1_min
• psp1_max
• psp1_sd
• psp1_mean

• psp1_mean
• psp1_sd
• psp1_min
• psp1_max

NSA/GNDRAD/C1 - PSP erroneously replaced by B&W

The PSP was erroneously replaced with a B&W on 6/13 and then 
              changed back to the PSP on 6/21. Data should still be good since
              appropriate calibration factors were applied.

• psp1_min
• psp1_max
• psp1_sd
• psp1_mean

• psp1_mean
• psp1_sd
• psp1_min
• psp1_max

NSA/GNDRAD/C1 - Instrument maintenance

The tip tower was lowered for instrument maintenance.  Data
              recorded are garbage.

• psp1_min
• psp1_max
• psp1_sd
• psp1_mean

• psp1_mean
• psp1_sd
• psp1_min
• psp1_max

NSA/GNDRAD/C1 - Bad calibrations applied

Bad data due to erroneous calibration constant in configuration 
              file

• pir1_mean
• psp1_sd
• pir1_sd
• psp1_min
• psp1_max
• psp1_mean
• pir1_max
• pir1_min

• psp1_mean
• psp1_sd
• psp1_min
• psp1_max
• pir1_max
• pir1_sd
• pir1_min
• pir1_mean

NSA/GNDRAD/C1 - PSP Data corrupted by brief spike

Large unreasonable narrow spike in PSP data; cause not known.

• psp1_min
• psp1_max
• psp1_sd
• psp1_mean

• psp1_mean
• psp1_sd
• psp1_min
• psp1_max

NSA/GNDRAD/C1 - No power to IRT

The data logger failed to supply power to the IRT.

• Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
• sfc_ir_temp_std
• Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
• Effective Surface (Skin) Temperature(sfc_ir_temp)

• Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
• sfc_ir_temp_std
• Effective Surface (Skin) Temperature(sfc_ir_temp)
• Surface Infra-Red Temperature Minima(sfc_ir_temp_min)

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.

• atmos_pressure_read_timeout_error
• atmos_pressure_PTB_serial_error
• Barometric Pressure(atmos_pressure)
• atmos_pressure_out_of_range_error

• Barometric Pressure(atmos_pressure)
• atmos_pressure_PTB_serial_error
• atmos_pressure_out_of_range_error
• atmos_pressure_read_timeout_error

• One Minute Visibility(one_minute_visibility)
• cumul_liq_water_equiv_out_of_range_err
• one_hour_pw_code_out_of_range_error
• ten_minute_vis_out_of_range_error
• one_min_pw_code_out_of_range_error
• ten_minute_PW_code
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• precip_rate_out_of_range_error
• one_minute_PW_code
• one_hour_PW_code
• Cumulative Snow(cumulative_snow)
• pws_read_timeout_error
• base_time
• ten_min_pw_code_out_of_range_error
• cumul_snow_out_of_range_error
• pws_serial_error
• Ten Minute Visibility(ten_minute_visibility)
• Precipitation rate(precip_rate)
• present_weather_sensor_NWS_code
• one_minute_vis_out_of_range_error

• snow_depth_internal_QC
• snow_depth_serial_error
• snow_depth_read_timeout_error
• Snow Depth(snow_depth)
• snow_depth_out_of_range_error

• ten_minute_PW_code
• Cumulative Snow(cumulative_snow)
• present_weather_sensor_NWS_code
• pws_serial_error
• one_min_pw_code_out_of_range_error
• One Minute Visibility(one_minute_visibility)
• Ten Minute Visibility(ten_minute_visibility)
• pws_read_timeout_error
• one_hour_pw_code_out_of_range_error
• one_minute_PW_code
• Cumulative Liquid Water Equivalent(cumul_liq_water_equiv)
• cumul_snow_out_of_range_error
• ten_min_pw_code_out_of_range_error
• ten_minute_vis_out_of_range_error
• cumul_liq_water_equiv_out_of_range_err
• one_minute_vis_out_of_range_error
• Precipitation rate(precip_rate)
• one_hour_PW_code
• precip_rate_out_of_range_error

NSA/SONDE/C1 - Broken temperature sensor

It appears that the temperature sensor on this radiosonde broke after launch.  There is a 
sudden drop of 12 degC in 2 seconds and the remaining tdry values seem to be about 30 
degC low.

• Dry Bulb Temperature(tdry)
• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Humidity, relative(rh)
• Dry Bulb Temperature(tdry)
• Dewpoint Temperature(dp)

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/GNDRAD/C1 - IRT cable failure

The IRT signal became very noisy and the problem was traced to the cable (after the 
instrument was returned to the vendor for diagnosis). The problem started occurring when ice 
surrounding the cable began to melt. The cable was repaired and the instrument reinstalled.

• Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
• sfc_ir_temp_std
• Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
• Effective Surface (Skin) Temperature(sfc_ir_temp)

NSA/GNDRAD/C1 - IRT returned to vendor

The IRT was returned to the vendor for diagnosis. It was found to be operating as expected 
and the signal noise problem was traced to the cable. The cable was repaired and the 
instrument reinstalled.

• Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
• sfc_ir_temp_std
• Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
• Effective Surface (Skin) Temperature(sfc_ir_temp)

NSA/GNDRAD/C2 - Upwelling PIR measurement - spikes in thermopile signal

ULH measurements have many spikes at this site.  On 2/03, the anomalous spikes become 
frequent and are very noticeable from 0027 - 0445 UTC.  Negative and positive spikes occur on 
seemingly random days until 5/27/2004.  Extensive troublshooting could not resolve 
problem, including a datalogger changout on 4/22.  Problem seems to have resolved itself with 
the last spikes occuring on 5/27/2004 approximately 1500GMT.  No problems with upwelling 
PIR noise are evident up until and after the conversion from Zeno to Campbell dataloggers 
on 11/22/2004.

• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• pir1_sd
• pir1_mean
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
• pir1_max
• up_long_hemisp_std
• pir1_min
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)

• Raw data stream - documentation not supported

• pir1_voltage
• inst_up_long_hemisp_tp

NSA/METTWR/C2 - Chilled Mirror grounding and timing issues

From beginning of data stream, the chilled mirror data was intermittent at best.  Problems 
with grounding and timing issues between logging instruments caused data to be incorrect 
and at times missing.

• VPCMH
• CMHDP
• SatVPCMH
• CMHRH
• CMHTemp

NSA/SONDE/C1 - This is a test sounding done using an RS80H radiosonde

This was a sounding done using an RS80H radiosonde to test a special operational 
procedure.  There is nothing wrong with the data, though users should be aware that the sounding 
was not done using the current ARM standard RS90 radiosonde.

• Wind Direction(deg)
• wstat
• alt
• Northward Wind Component(v_wind)
• Dewpoint Temperature(dp)
• lon
• lat
• Humidity, relative(rh)
• time_offset
• asc
• base_time
• Dry Bulb Temperature(tdry)
• Eastward Wind Component(u_wind)
• Mean Wind Speed(wspd)
• Pressure, atmospheric, constant value of model level, RUC model output(pres)

NSA/GNDRAD/C1 - IRT power failure

After performing corrective maintenance which involved turning off power to the GNDRAD 
instruments and data logger, power to the IRT was not restored. The problem was corrected by 
replacing the data logger.

• Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
• sfc_ir_temp_std
• Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
• Effective Surface (Skin) Temperature(sfc_ir_temp)

NSA/METTWR/C2 - Data Incorrect during Maintenance

The 10m tower was lowered for 2-year change-out of the met sensors.  Data during this time 
is not representative.

• RefTemp_AVG
• RH2m_STD
• DP5m_STD
• Wind speed, vector-averaged(WinSpeed_U_WVT)
• Relative humidity, average, at 2-m height(RH5m_AVG)
• QLIVolt_AVG
• VP5m_STD
• WinDir_SDU_WVT
• Temperature, air, average, at 2-m height(T2m_AVG)
• T2m_STD
• Wind speed, mean(WinSpeed_S_WVT)
• Temperature, dew point, average, at 5-m height(DP5m_AVG)
• VP2m_STD
• T5m_STD
• Pressure, vapor, at 2-m height(VP2m_AVG)
• RH5m_STD
• SatVPCMH
• Relative humidity, average, at 2-m height(RH2m_AVG)
• Pressure, vapor, at 5-m height(VP5m_AVG)
• DP2m_STD
• Temperature, dew point, average, at 2-m height(DP2m_AVG)
• Wind direction, vector-averaged(WinDir_DU_WVT)
• Temperature, air, average, at 5-m height(T5m_AVG)

NSA/METTWR/C2 -  All Data Missing or Incorrect during Maintenance

All data incorrect or missing due to change of the Serial Data multiplexer and the Vaisala 
QLI data collector during these times.

• RH2m_STD
• RefTemp_AVG
• Relative humidity, average, at 2-m height(RH5m_AVG)
• QLIVolt_AVG
• VP5m_STD
• PWcod15mi
• Precipitation Rate(PCPRate)
• CMHTemp
• T5m_STD
• VPCMH
• CMHDP
• Pressure, vapor, at 5-m height(VP5m_AVG)
• DP2m_STD
• Temperature, dew point, average, at 2-m height(DP2m_AVG)
• Wind direction, vector-averaged(WinDir_DU_WVT)
• PWCod1hr
• batt_volt
• CumSnow
• Wind speed, vector-averaged(WinSpeed_U_WVT)
• DP5m_STD
• CumH2O
• WinDir_SDU_WVT
• CMHRH
• Temperature, air, average, at 2-m height(T2m_AVG)
• T2m_STD
• Wind speed, mean(WinSpeed_S_WVT)
• Temperature, dew point, average, at 5-m height(DP5m_AVG)
• VP2m_STD
• Pressure, atmospheric(AtmPress)
• Pressure, vapor, at 2-m height(VP2m_AVG)
• PWSAlarm
• RH5m_STD
• SatVPCMH
• InstPWCod
• Relative humidity, average, at 2-m height(RH2m_AVG)
• Visibility, 1 minute average(AvgVis1mi)
• Temperature, air, average, at 5-m height(T5m_AVG)
• Visibility, 10 minute average(AvgVis10m)

NSA/METTWR/C2 - PWS Data Suspect

Data from the PWS is suspect during these times due to problems when the system was 
re-calibrated.  System was corrected.

• PWCod1hr
• CumSnow
• PWSAlarm
• CumH2O
• PWcod15mi
• InstPWCod
• Visibility, 1 minute average(AvgVis1mi)
• Precipitation Rate(PCPRate)
• Visibility, 10 minute average(AvgVis10m)

NSA/GNDRAD/C1 - Frosting/Condensation

The GNDRAD PIR and IRT comparison was showing the IRT 2-4 W/m^2 greater than the PIR.  
Suspected snow or frost on the instrument(s).  Corrective maintenance performed 10/15/04 at 
21:30 UT.  Optics of both instruments were cleaned.  Upwelling longwave measurement 
agreement restored (+/- 5 W/^2).

Although the relative performance (agreement) of the two instruments improved after 
corrective maintenance (+/- 2 W/m^2), no correction is suggested because the agreement remains 
with the estimated measurement uncertainty of +/- 4 W/m^2 (IRT) and +/-10 W/m^2 (Inverted 
PIR)

• Effective Surface (Skin) Temperature(sfc_ir_temp)
• net_std
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
• Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
• sfc_ir_temp_std
• up_long_hemisp_std
• Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

• Raw data stream - documentation not supported

• pir1_case_therm
• inst_up_long_hemisp_tp
• inst_up_long_case_resist
• pir1_dome_therm
• pir1_voltage
• inst_up_long_dome_resist

NSA/METTWR/C2 - Instrument problem

CMH and PWS stopped reporting.  Communication cable found to be broken.

• PWCod1hr
• CumSnow
• CumH2O
• PWcod15mi
• CMHRH
• Precipitation Rate(PCPRate)
• CMHTemp
• VPCMH
• CMHDP
• PWSAlarm
• SatVPCMH
• InstPWCod
• Visibility, 1 minute average(AvgVis1mi)
• Visibility, 10 minute average(AvgVis10m)

NSA/RWP/C1 - System problems

RWP PC experienced repeated lock-ups during system operations.  Various components were 
swapped out and the loggerboard configuration was modified.

• AVHRR satellite images for Darwin from BOM (RAW)(raw)

• Backscatter, doppler spectrum, 915 MHz RWP(spc_amp)

• Raw data stream - documentation not supported

• Beam 2 radial wind speed(vel2)
• Eastward Wind Component(u_wind)
• Beam 1 radial wind speed(vel1)
• Wind direction, horizontal, at altitude, 915 MHz RWP(dir)
• Beam 4 radial wind speed(vel4)
• Beam 3 radial wind speed(vel3)
• Northward Wind Component(v_wind)
• Beam 0 radial wind speed(vel0)
• Wind speed, horizontal, at altitude, 915 MHz RWP(spd)

• sspecw
• Mean radial beam velocity(mdf)
• noise
• Signal to noise ratio(snr)
• Spectral width(specw)
• ssnr

• Mean radial beam velocity(mdf)

• Backscatter, doppler spectrum, 915 MHz RWP(spc_amp)

• ncns_vert_v
• ncns_virtual_temp_corr
• ncns_virtual_temp

NSA/SONDE/C1 - Test sounding using RS80H

This is a test sounding done using an old RS80H radiosonde rather than the production RS90 
version.  Although the sonde functioned normally, the RH data may be subject to a dry 
bias caused by the age of the sensor and possible contamination.

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

NSA/SONDE/C1 - Incorrect surface altitude

The value of the station altitude (relative to mean sea level) is
incorrect in all NSA radiosonde files prior to 2/14/2004.  The correct
value is 8 m.  The incorrect value can be different.  Prior to 4/24/2002
(in platform nsaisssonde...) it was given as 12 m.  From 4/24/2002 to
2/13/2004 (in platform nsasondewnpn...) it is almost always given as
27 m (sometimes [rarely] 17 m).

• alt

• Raw data stream - documentation not supported

NSA/RWP/C1 - Instrument problem, Data transfer problem

Problems with the coherent integration hardware resulted in repeated ingest failures when 
too many errors occurred.  These cases involved occasions when there were no samples from 
a single axis (or more) during an averaging interval. If there were sufficient samples, 
the mean wind speed and direction were reported if normal data criteria were met.  
However, there were undoubtedly cases when only a few samples were obtained during an averaging 
interval.  Thus the variability of the data is likely increased.  The data are correct 
when reported.

• snr3
• Eastward Wind Component(u_wind)
• Beam 2 radial wind speed(vel2)
• Wind direction, horizontal, at altitude, 915 MHz RWP(dir)
• snr4
• Beam 1 radial wind speed(vel1)
• Beam 4 radial wind speed(vel4)
• Beam 3 radial wind speed(vel3)
• snr0
• snr1
• snr2
• Northward Wind Component(v_wind)
• Beam 0 radial wind speed(vel0)
• Wind speed, horizontal, at altitude, 915 MHz RWP(spd)

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.

• Backscatter, doppler spectrum, 915 MHz RWP(spc_amp)
• alt
• plen
• ncoh
• tditime
• bswitch
• time_offset
• nspc
• sitime
• vband
• bins
• elevation
• dly
• lon
• nheight
• sampr
• base_time
• height_t
• range_gate
• prf
• rgs
• oband
• pcbits
• vsr
• spcavetim
• ipp
• beam
• lat
• rgl
• rgf

• Eastward Wind Component(u_wind)
• lon
• nspc
• power
• avgint
• rgs
• snr3
• snr4
• snr0
• snr1
• snr2
• dly
• vvsr
• Wind direction, horizontal, at altitude, 915 MHz RWP(dir)
• oband
• tditime
• rgl
• rgf
• range_gate
• ncoh
• time_offset
• lat
• prf
• base_time
• ovsr
• azimuth1
• azimuth0
• azimuth3
• azimuth2
• Beam 2 radial wind speed(vel2)
• Beam 1 radial wind speed(vel1)
• azimuth4
• Beam 4 radial wind speed(vel4)
• Beam 3 radial wind speed(vel3)
• sampr
• Beam 0 radial wind speed(vel0)
• ipp
• nrcns4
• nrcns3
• nrcns2
• nrcns1
• nrcns0
• ncns1
• ncns0
• ncns3
• ncns2
• ncns4
• sitime
• Wind speed, horizontal, at altitude, 915 MHz RWP(spd)
• plen
• spcavetim
• alt
• nheight
• nrec0
• nrec1
• nrec2
• nrec3
• nrec4
• elevation0
• Northward Wind Component(v_wind)
• elevation2
• elevation1
• elevation4
• elevation3
• height_p
• vband
• pcbits
• bswitch

• Radiation, longwave, downwelling radiance, 0.5 cm-1 resolution, 3.3-5.5 um(mean_rad)
• AERIunitNumber
• calibratedSceneID
• timeHHMMSS
• wnum2
• Time_UTC_hours
• systemReleaseNumber
• channelNumber
• time_offset
• base_time
• alt
• Longitude
• BBsupportStructureTemp
• atmosphericRelativeHumidity
• missingDataFlag
• calibrationCBBtemp
• instrumentUnitNumber
• Latitude
• sceneMirrorAngle
• dateYYMMDD
• calibrationAmbientTemp
• atmosphericPressure
• wnum
• outsideAirTemp
• calibrationHBBtemp
• lat
• hatchOpen
• JulianDay
• sceneViewDuration
• standard_dev_mean_rad
• time
• lon
• sceneMirPosEncoderMaxDrift
• Altitude

• IR Brightness Temperature(sky_ir_temp)
• wet_window
• 31.4 GHz sky brightness temperature(tbsky31)
• Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
• tkbb
• alt
• tnd_nom31
• tnd_nom23
• bb23
• bb31
• time_offset
• tc23
• tc31
• tknd
• lat
• actel
• tnd23
• tnd31
• tkxc
• Temperature, brightness, longwave(ir_temp)
• sky23
• bbn23
• base_time
• sky31
• bbn31
• actaz
• tkair
• lon
• Total liquid water along LOS path(liq)
• Total water vapor along LOS path(vap)

• sceneMirPosEncoderMaxDrift
• skyViewStdDevRadiance675_680
• Radiation, longwave, brightness temp, surface air, mean, 675-680 cm-1(surfaceLayerAirTemp675_680)
• JulianDay
• SWskyNENacceptable
• channelNumber
• calibrationAmbientTemp
• LW_HBB_NEN
• Radiation, longwave, radiance, elevated air, mean, 2282-2287 cm-1(elevatedLayerRadiance2282_2287)
• LWskyNEN
• Latitude
• lon
• systemReleaseNumber
• skyViewStdDevRadiance985_990
• AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
• AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
• outsideAirTemp
• wnumsum7
• wnumsum6
• wnumsum5
• wnumsum4
• wnumsum3
• wnumsum2
• wnumsum1
• wnumsum9
• wnumsum8
• HBB2minNENestimateNo1Ch1
• HBB2minNENestimateNo1Ch2
• HBBstable
• Radiation, longwave, radiance, atmospheric window, mean, 985-990 cm-1(longwaveWindowRadiance985_990)
• LWresponsivity
• maxSampleStdDev
• lat
• Altitude
• dataAvailable
• instrumentUnitNumber
• time_offset
• calibrationHBBtemp
• atmosphericPressure
• LWskyNENacceptable
• Radiation, longwave, radiances, SD, 25 cm-1 spectral avgs, 5.5-18 um(SkyUniformityCh1)
• Radiation, longwave, radiances, SD, 25 cm-1 spectral avgs, 3.3-5.5 um(SkyUniformityCh2)
• time
• calibratedSceneID
• atmosphericRelativeHumidity
• sceneViewDuration
• sceneMirPosEncoderDrift
• Radiation, longwave, brightness temp, 25 cm-1 spectral avgs, 3.3-5.5 um(SkyBrightnessTempSpectralAveragesCh2)
• Radiation, longwave, brightness temp, 25 cm-1 spectral avgs, 5.5-18 um(SkyBrightnessTempSpectralAveragesCh1)
• ResponsivitySpectralAveragesCh1
• ResponsivitySpectralAveragesCh2
• SkyNENCh1
• SkyNENCh2
• hatchOpen
• Radiation, longwave, brightness temp, elevated air, mean, 2282-2287 cm-1(elevatedLayerAirTemp2282_2287)
• SW_HBB_NEN
• sceneMirrorAngle
• Radiation, longwave, radiance, atmospheric window, mean, 2510-2515 cm-1(shortwaveWindowRadiance2510_2515)
• Radiation, longwave, brightness temp, elevated air, mean, 700-705 cm-1(elevatedLayerAirTemp700_705)
• Radiation, longwave, brightness temp, atmospheric window, mean, 2510-2515 cm-1(shortwaveWindowAirTemp2510_2515)
• HBB2minNENestimateNo2Ch2
• HBB2minNENestimateNo2Ch1
• skyViewStdDevRadiance2510_2515
• dateYYMMDD
• alt
• Radiation, longwave, radiance, surface air, mean, 2295-2300 cm-1(surfaceLayerRadiance2295_2300)
• base_time
• skyViewStdDevRadiance2282_2287
• Radiation, longwave, brightness temp, surface air, mean, 2295-2300 cm-1(surfaceLayerAirTemp2295_2300)
• SWskyNEN
• wnumsum11
• wnumsum12
• wnumsum13
• wnumsum14
• wnumsum10
• skyViewStdDevRadiance700_705
• SWresponsivity
• Longitude
• HBBtempDrift
• sunSensorIntensity
• Radiation, longwave, radiance, surface air, mean, 675-680 cm-1(surfaceLayerRadiance675_680)
• missingDataFlag
• ABBmaxTempDiff
• Radiation, longwave, radiance, elevated air, mean, 700-705 cm-1(elevatedLayerRadiance700_705)
• HBBmaxTempDiff
• timeHHMMSS
• AERIunitNumber
• skyViewStdDevRadiance2295_2300
• frontEndFanAirTempDiff
• calibrationCBBtemp
• Time_UTC_hours
• rainSensorIntensity
• Radiation, longwave, brightness temp, atmospheric window, mean, 985-990 cm-1(longwaveWindowAirTemp985_990)

• base_time
• rgs
• noise
• Signal to noise ratio(snr)
• Pressure, associated geometric height, at altitude, NGM model output(height)
• Temperature, virtual, profile, merged from 50 and 915 MHz RASS(virtual_temp)
• Mean radial beam velocity(mdf)
• smdf
• lon
• time_offset
• sampr
• Spectral width(specw)
• alt
• ssnr
• sspecw
• lat

• lon
• Time_UTC_hours
• atmosphericPressure
• JulianDay
• sceneMirrorAngle
• hatchOpen
• outsideAirTemp
• Longitude
• dateYYMMDD
• time
• sceneViewDuration
• Radiation, longwave, downwelling radiance, 0.5 cm-1 resolution, 3.3-5.5 um(mean_rad)
• sceneMirPosEncoderMaxDrift
• timeHHMMSS
• base_time
• calibrationCBBtemp
• Latitude
• calibrationHBBtemp
• missingDataFlag
• instrumentUnitNumber
• atmosphericRelativeHumidity
• systemReleaseNumber
• channelNumber
• wnum2
• lat
• BBsupportStructureTemp
• standard_dev_mean_rad
• Altitude
• wnum
• calibratedSceneID
• AERIunitNumber
• alt
• time_offset
• calibrationAmbientTemp

• range_bin_time
• background_signal
• time
• shots_summed
• lat
• voltage_15
• max_altitude
• voltage_05
• voltage_10
• pulse_rep
• instrument_temp
• detector_temp
• Pressure, associated geometric height, at altitude, NGM model output(height)
• laser_temp
• time_offset
• range_offset
• range
• filter_temp
• Preliminary cloud base height above ground level(preliminary_cbh)
• energy_monitor
• alt
• range_bins
• detector_counts
• base_time
• lon
• range_bin_width

• status_string
• Backscatter(backscatter)
• Lowest cloud base height detected.(first_cbh)
• tilt_angle
• base_time
• Second lowest cloud base height(second_cbh)
• detection_status
• alt_highest_signal
• window_contamination
• receiver_sensitivity
• Vertical visibility(vertical_visibility)
• laser_temperature
• alt
• time_offset
• filename
• lat
• laser_pulse_energy
• sum_backscatter
• status_flag
• lon
• background_light
• Third cloud base height(third_cbh)
• measurement_parameters
• range

• Pressure, associated geometric height, at altitude, NGM model output(height)
• sampr
• rgs
• lat
• lon
• base_time
• time_offset
• alt
• Backscatter, doppler spectrum, 915 MHz RWP(spc_amp)
• bins

• SNR Corrected Beam 0 Virtual Temperature(snr_virtual_temp_corr)
• ncns_virtual_temp
• SNR Beam 0 Virtual Temperature(snr_virtual_temp)
• Pressure, associated geometric height, at altitude, NGM model output(height)
• rgs
• ncns_vert_v
• ncns_virtual_temp_corr
• time_offset
• Temperature, virtual, profile, merged from 50 and 915 MHz RASS(virtual_temp)
• Wind speed, vertical velocity, at altitude, 915 MHz RWP(vert_v)
• lat
• nrcns
• base_time
• SNR Vertical wind velocity(snr_vert_v)
• sampr
• lon
• Temperature, virtual, at altitude, 10-min cons. avg, corrected, 915 MHz RWP/RASS(virtual_temp_corr)
• avgint
• alt
• nrec

• BBcontroller2temp
• skyViewImaginaryRadiance2295_2300
• HBBmaxTempDiff
• ABBtempOffset
• skyViewImaginaryRadiance2510_2515
• detectorTemp
• coadditionsCount
• calibrationHBBtemp
• Radiation, longwave, radiance, surface air, mean, 675-680 cm-1(surfaceLayerRadiance675_680)
• skyViewStdDevRadiance985_990
• HBBapexTemp
• ABBviewStdDevRadiance2295_2300
• systemReleaseNumber
• skyViewStdDevRadiance2510_2515
• ABBviewStdDevRadiance985_990
• base_time
• timeHHMMSS
• sceneMirrorAngle
• LW_HBB_NEN
• spareTemp
• HBBstable
• Latitude
• sceneMirPosEncoderMaxDrift
• Radiation, longwave, brightness temp, elevated air, mean, 2282-2287 cm-1(elevatedLayerAirTemp2282_2287)
• channelNumber
• HBBviewStdDevRadiance700_705
• outsideAirTemp
• HBBviewStdDevRadiance2510_2515
• rackAmbientTemp
• calibratedSceneID
• frontEndFanAirHeatedTemp
• HBBtempOffset
• instrumentUnitNumber
• ABBtopTemp
• skyViewImaginaryRadiance700_705
• fixed2500ohmResistor
• missingDataFlag
• time_offset
• fixed97KohmResistor
• LWskyNEN
• HBBapexTempWeight
• ABBbottomTempWeight
• expandedInterferogramSize
• Radiation, longwave, brightness temp, atmospheric window, mean, 2510-2515 cm-1(shortwaveWindowAirTemp2510_2515)
• coolerCurrent
• ABBviewStdDevRadiance700_705
• HBBbottomTemp
• frontEndFanAirUnheatedTemp
• computerTemp
• LWresponsivity
• lon
• calibrationAmbientTemp
• interferometerSecondPortTemp
• skyViewStdDevRadiance700_705
• Radiation, longwave, brightness temp, elevated air, mean, 700-705 cm-1(elevatedLayerAirTemp700_705)
• interferometerEnclosureRelativeHumidity
• originalInterferogramSize
• HBBviewStdDevRadiance985_990
• maxSampleStdDev
• Radiation, longwave, radiance, atmospheric window, mean, 2510-2515 cm-1(shortwaveWindowRadiance2510_2515)
• motorDriverTemp
• SWskyNENlimit
• Longitude
• alt
• HBBviewStdDevRadiance675_680
• HBBviewStdDevRadiance2282_2287
• ABBapexTemp
• hatchOpen
• skyViewImaginaryRadiance2282_2287
• ABBbottomTemp
• AERIunitNumber
• Altitude
• LWskyNENacceptable
• sceneMirPosCount
• sceneMirrorMotorStep
• SWresponsivity
• lat
• originalLaserWavenumber
• Radiation, longwave, brightness temp, surface air, mean, 2295-2300 cm-1(surfaceLayerAirTemp2295_2300)
• Radiation, longwave, radiance, atmospheric window, mean, 985-990 cm-1(longwaveWindowRadiance985_990)
• ABBviewStdDevRadiance675_680
• BBsupportStructureTemp
• HBBviewStdDevRadiance2295_2300
• sceneMirPosEncoder
• rainSensorIntensity
• twoMinuteNoiseEstimateFactor
• skyViewImaginaryRadiance985_990
• SCEtemp
• sceneViewDuration
• ABBviewStdDevRadiance2282_2287
• skyViewImaginaryRadiance675_680
• BBcontroller1temp
• HBBtopTempWeight
• dateYYMMDD
• airNearBBsTemp
• ABBmaxTempDiff
• HBBtempDriftLimit
• Radiation, longwave, radiance, surface air, mean, 2295-2300 cm-1(surfaceLayerRadiance2295_2300)
• BBcavityFactor
• coolerCompressorTemp
• sceneMirrorTemp
• coolerExpanderTemp
• coolerPowerSupplyTemp
• dataAvailable
• skyViewStdDevRadiance675_680
• Time_UTC_hours
• Radiation, longwave, brightness temp, atmospheric window, mean, 985-990 cm-1(longwaveWindowAirTemp985_990)
• HBBtempDrift
• sunSensorIntensity
• atmosphericRelativeHumidity
• sceneMirrorPosition
• ABBviewStdDevRadiance2510_2515
• atmosphericPressure
• HBBtopTemp
• skyViewStdDevRadiance2282_2287
• SWskyNENacceptable
• time
• JulianDay
• ABBapexTempWeight
• Radiation, longwave, brightness temp, surface air, mean, 675-680 cm-1(surfaceLayerAirTemp675_680)
• SW_HBB_NEN
• ABBtopTempWeight
• LWskyNENlimit
• fixed12KohmResistor
• SWskyNEN
• airNearInterferometerTemp
• Radiation, longwave, radiance, elevated air, mean, 700-705 cm-1(elevatedLayerRadiance700_705)
• mirrorMotorTemp
• Radiation, longwave, radiance, elevated air, mean, 2282-2287 cm-1(elevatedLayerRadiance2282_2287)
• FFOVhalfAngle
• interferometerWindowTemp
• sceneMirPosEncoderDrift
• skyViewStdDevRadiance2295_2300
• HBBbottomTempWeight
• calibrationCBBtemp
• outputLaserWavenumber
• opticsCompartmentRelativeHumidity
• numberOfTerms
• frontEndFanAirTempDiff

• range_bin_time
• detector_temp
• total_counts
• scalar_sync_offset
• Pressure, associated geometric height, at altitude, NGM model output(height)
• transceiver_azimuth_angle
• time_offset
• laser_sync_offset
• Preliminary cloud base height above ground level(preliminary_cbh)
• voltage_10
• voltage_15
• voltage_05
• trigger_freq
• time
• instrument_temp
• shots_sum
• filter_temp
• Backscatter(backscatter)
• alt
• lon
• base_time
• pulse_rep
• background_signal
• deadtime_correction
• laser_scalar_sync_offset
• lat
• range
• max_altitude
• range_bin_width
• energy_monitor
• range_offset
• shots_summed
• property
• laser_temp
• transceiver_altitude_angle
• range_bins

• ReceiverNumber
• CalCheckTime
• RxCalTimeStamp
• TWTStatusCode
• DCFilterONOFF
• base_time
• NumCodeBits
• MMCR Mean Doppler Velocity(MeanDopplerVelocity)
• WindowingONOFF
• NumFFT
• ReceiverMode
• GateSpacing
• heights
• NumHeights
• CalCheckLevel
• PulseWidth
• NumSpectralAverages
• SkyNoiseLevel
• Power
• DataQualityStatus
• SignalToNoiseRatio
• ClutterHeight
• ModeNum
• NumCoherentIntegrations
• MinimumDetectableReflectivity
• time_offset
• Cloud, reflectivity, at altitude(Reflectivity)
• Rx290KLevel
• lon
• NyquistVelocity
• ModeDescription
• PeakTransmittedPowerAvg
• TimeAvg
• StartGateDelay
• InterPulsePeriod
• lat
• alt
• RxGain
• time
• NumReceivers
• RangeCorrectedPower
• MMCR Spectral Width(SpectralWidth)
• AvgNoiseLevel
• NoiseLevel
• CircularDepolarizationRatio
• RadarConstant

• lat
• SonicWD_SDU_WVT
• RH10M_STD
• VP10M_STD
• Relative humidity, average, at 10-m height(RH10M_AVG)
• Wind speed, vector-averaged, at 10-m height(WS10M_U_WVT)
• Temperature, dew point, average, at 2-m height(DP2M_AVG)
• Pressure, vapor, at 2-m height(VP2M_AVG)
• Pressure, vapor, at 20-m height(VP20M_AVG)
• Temperature, dew point, average, at 10-m height(DP10M_AVG)
• CMHTemp
• VP20M_STD
• DP20M_STD
• Wind speed, mean, at 2-m height(WS2M_S_WVT)
• Wind speed, vector-averaged, at 2-m height(WS2M_U_WVT)
• RefT10m_AVG
• DP40M_STD
• Wind direction, vector-averaged, at 40-m height(WD40M_DU_WVT)
• Wind speed, mean, at 40-m height(WS40M_S_WVT)
• time
• RefT40M_AVG
• DP10M_STD
• PWSAlarm
• WD40M_SDU_WVT
• alt
• RefT2M_AVG
• Wind speed, vector-averaged, at 20-m height(WS20M_U_WVT)
• SatVPCMH
• PwCod1hr
• lon
• Temperature, air, average, at 10-m height(T10M_AVG)
• Temperature, dew point, average, at 20-m height(DP20M_AVG)
• SonicS_AVG
• T40M_STD
• VPCMH
• DP2M_STD
• RH40M_STD
• RefT20M_AVG
• VP40M_STD
• PcpRate
• base_time
• Pressure, atmospheric(AtmPress)
• SonicX_AVG
• Visibility, 1 minute average(AvgVis1mi)
• WD2M_SDU_WVT
• Wind direction, vector-averaged, at 20-m height(WD20M_DU_WVT)
• Visibility, 10 minute average(AvgVis10m)
• CMHDP
• Temperature, air, average, at 20-m height(T20M_AVG)
• T10M_STD
• CumH2O
• CumSnow
• PwCod15mi
• T20M_STD
• Volt10M_AVG
• SonicY_AVG
• Relative humidity, average, at 40-m height(RH40M_AVG)
• WD10M_SDU_WVT
• WD20M_SDU_WVT
• Wind direction vector mean(SonicWD_DU_WVT)
• Temperature, air, average, at 40-m height(T40M_AVG)
• Wind speed, mean, at 10-m height(WS10M_S_WVT)
• Pressure, vapor, at 10-m height(VP10M_AVG)
• InstPwCod
• Volt40M_AVG
• Wind direction, vector-averaged, at 10-m height(WD10M_DU_WVT)
• RH2M_STD
• Batt_Volt
• Relative humidity, average, at 2-m height(RH2M_AVG)
• Wind speed, vector-averaged, at 40-m height(WS40M_U_WVT)
• T2M_STD
• Temperature, air, average, at 2-m height(T2M_AVG)
• Temperature, dew point, average, at 40-m height(DP40M_AVG)
• VP2M_STD
• time_offset
• Wind speed vector mean(SonicWS_U_WVT)
• RH20M_STD
• Pressure, vapor, at 40-m height(VP40M_AVG)
• Relative humidity, average, at 20-m height(RH20M_AVG)
• Wind speed, mean, at 20-m height(WS20M_S_WVT)
• Wind direction, vector-averaged, at 2-m height(WD2M_DU_WVT)
• Volt20M_AVG
• Volt2M_AVG
• Wind speed arithmetic mean(SonicWS_S_WVT)
• CMHRH

• azimuth
• Density, water vapor, prof. from sfc.-10 km, der. from Tbright stat. retrvl.(waterVaporDensity)
• alt
• frequency
• Temperature, air, at instrument height (1 or 2 m)(surfaceTemperature)
• elevation
• Liquid water content, cloud, vert. prof. sfc.-10km, from Tbright stat. retrvl.(liquidWaterContent)
• Humidity, relative, at instrument height (1 or 2 m)(surfaceRelativeHumidity)
• Water vapor, tot. precipitable, from Tbright, 23.835 & 30.0 GHz, stat. retrvl.(totalPrecipitableWater2)
• Pressure, lifting condensation level(liftingCondensationLevelPres)
• Liquid water path, from Tbright at 23.835 and 30.0 GHz only, using stat. retrvl.(liquidWaterPath2)
• Water vapor, total precipitable, derived from Tbright using stat. retrvl.(totalPrecipitableWater)
• base_time
• totalPrecipitableWaterRmsError
• Temperature, virtual, vert. prof. sfc-10km, fr. wtr. vap. dens. and temp. prof.(virtualTemperature)
• Density, water vapor, at instrument height (1 or 2 m)(surfaceWaterVaporDensity)
• liquidWaterContentRmsError
• blackbodyTemperature
• Height, level of free convection(levelFreeConvection)
• Retrieved dewpoint temperature(dewpointTemperature)
• lon
• time
• temperatureRmsError
• Retrieved water vapor mixing ratio(waterVaporMixingRatio)
• Air temperature(temperature)
• time_offset
• Microwave brightness temperature(brightnessTemperature)
• Height, lifting condensation level(liftingCondensationLevel)
• Height, cloud base, height where IR temp. matches retrieved temp. profile(cloudBaseHeight)
• Humidity, relative, prof. from sfc.-10km, from water vap. dens. and temp. prof.(relativeHumidity)
• Height, equilibrium level(equilibriumLevel)
• Barometric pressure(pressure)
• Pressure, barometric. at instrument height (1 or 2 m)(surfacePressure)
• Liquid water path, from brightness temperatures using statistical retrieval(liquidWaterPath)
• Pressure, associated geometric height, at altitude, NGM model output(height)
• lat
• liquidWaterPathRmsError
• Pressure, equilibrium level(equilibriumLevelPres)
• totalPrecipitableWater2RmsError
• waterVaporDensityRmsError
• infraredTemperature
• dataQualityFlags
• Pressure, level of free convection(levelFreeConvectionPres)
• Energy, potential, convective, available, from RUC model(cape)
• liquidWaterPath2RmsError
• wetWindowFlag

• Signal to noise ratio(snr)
• oband
• bswitch
• lon
• beam
• base_time
• vband
• spcavetime
• pcbits
• ipp
• Mean radial beam velocity(mdf)
• plen
• nheight
• alt
• dly
• time_offset
• vsr
• elevation
• nspc
• Spectral width(specw)
• sitime
• ncoh
• tditime
• range_gate
• prf
• noise
• height_t
• lat
• sampr
• rgl
• rgs
• rgf

• tbskytip31
• tnd23I
• tbskytip23
• r31
• lon
• r23
• lat
• tnd23
• tnd31
• wet_window
• tknd
• tkxc
• alt
• tkbb
• bb23
• time_offset
• bb31
• tc31
• base_time
• tnd31I
• tc23
• tnd_nom23
• tnd_nom31
• actaz
• liqtip
• actel
• tipsky31
• tipsky23
• tkair
• vaptip
• bbn31
• bbn23

• JPEG data stream - documentation not yet available

NSA/GNDRAD/C2 - Incorrect calibration coefficients applied to upwelling(Gndrad)PIR

An insitu test comparing the Gndrad PIR and the Gndrad IRT at the NSA was performed from 6 
Jan 2005 to 12 Jan 2005.  The radiometer mentor requested the Eppley single calibration 
coefficient for the PIR replace the 4 coefficients method developed by NREL.  The Grndrad 
PIR compared closer to the Gndrad IRT during this period. However, the radiometer mentor 
believes the 4 coefficient PIR irradiance measurements remains superior to the single 
coefficient Eppley PIR measurement method.  Further questions should be directed to the 
radiometer instrument mentor.

• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• pir1_sd
• pir1_mean
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
• pir1_max
• up_long_hemisp_std
• pir1_min
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)

• Raw data stream - documentation not supported

NSA/METTWR/C2 - Tower Lowered

The tower was lowered to install the GroundMFR.  Data from the T/RH probes and the wind 
speed and direction sensors are not representative during the time period.

• RH2m_STD
• Wind speed, vector-averaged(WinSpeed_U_WVT)
• DP5m_STD
• Relative humidity, average, at 2-m height(RH5m_AVG)
• WinDir_SDU_WVT
• VP5m_STD
• Temperature, air, average, at 2-m height(T2m_AVG)
• T2m_STD
• Wind speed, mean(WinSpeed_S_WVT)
• Temperature, dew point, average, at 5-m height(DP5m_AVG)
• VP2m_STD
• T5m_STD
• Pressure, vapor, at 2-m height(VP2m_AVG)
• RH5m_STD
• Relative humidity, average, at 2-m height(RH2m_AVG)
• Pressure, vapor, at 5-m height(VP5m_AVG)
• DP2m_STD
• Temperature, dew point, average, at 2-m height(DP2m_AVG)
• Wind direction, vector-averaged(WinDir_DU_WVT)
• Temperature, air, average, at 5-m height(T5m_AVG)

NSA/SONDE/C1 - Bad temperature

Because of strong winds, the radiosonde hit the ground after launch and the temperature 
sensor broke.  The RH and pressure data also should be considered suspect.

• Wind Direction(deg)
• wstat
• alt
• Northward Wind Component(v_wind)
• Dewpoint Temperature(dp)
• lon
• lat
• Humidity, relative(rh)
• time_offset
• asc
• base_time
• Dry Bulb Temperature(tdry)
• Eastward Wind Component(u_wind)
• Mean Wind Speed(wspd)
• Pressure, atmospheric, constant value of model level, RUC model output(pres)

NSA/METTWR/C2 - 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.

• CumH2O
• Precipitation Rate(PCPRate)

NSA/METTWR/C2 - CMH Data Missing During Calibration

The CMH was removed for it's bi-annual cleaning and calibration.

• VPCMH
• CMHDP
• SatVPCMH
• CMHRH
• CMHTemp

NSA/GNDRAD/C1/C2 - Upwelling Shortwave data flagged bad are good.

The Upwelling Shortwave at both NSA facilites, C1 and C2, have been flagged red by the 
automatic tests because it is above empiical limits determined for a more southerly site 
(SGP) for this time of year. The data are good and should be flagged green. The test limits 
will be revised for NSA.

• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)

• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)

NSA/GNDRAD/C1 - Power Disconnected Briefly

Power to the Tip tower and Groundrad was disconnected briefly while ground resistance 
measurements were made. 

The following comments are from Inst. Mentor Tom Stoffel: 

The longwave and shortwave irradiances from GNDRAD were not effected by the
temporary power disconnect.  Data are good.  This would have only stopped
the ventilators for a brief time and the data do not show any signs of poor
instrument responses.

The "sfc_ir_temp" data were, however, impacted during the brief (2
readings?) interval.

• Effective Surface (Skin) Temperature(sfc_ir_temp)
• external_voltage

NSA/METTWR/C2 - Tower Lowered, Data Not Representative

The tower was lowered to remove equipment.  The data from the wind sensors and T/RH probes 
were not representative.

• RH2m_STD
• Wind speed, vector-averaged(WinSpeed_U_WVT)
• DP5m_STD
• Relative humidity, average, at 2-m height(RH5m_AVG)
• WinDir_SDU_WVT
• VP5m_STD
• Temperature, air, average, at 2-m height(T2m_AVG)
• T2m_STD
• Wind speed, mean(WinSpeed_S_WVT)
• Temperature, dew point, average, at 5-m height(DP5m_AVG)
• VP2m_STD
• T5m_STD
• Pressure, vapor, at 2-m height(VP2m_AVG)
• RH5m_STD
• Relative humidity, average, at 2-m height(RH2m_AVG)
• Pressure, vapor, at 5-m height(VP5m_AVG)
• DP2m_STD
• Temperature, dew point, average, at 2-m height(DP2m_AVG)
• Wind direction, vector-averaged(WinDir_DU_WVT)
• Temperature, air, average, at 5-m height(T5m_AVG)

NSA/GNDRAD/C1 - power outage affecting some GNDRAD sensors

During the power outage the upwelling global measurement from the PSP instrument shows a 
slight increase from -5 to +0 W/m2.  This is due to removal of thermal offsets induced by 
the AC heater during the power outage.  This heater is installed within the PSP 
ventilator - it is necessary for the NSA/C1 climate.
The upwelling longwave PIR instrument is unaffected due to case and dome temperature 
corrections.
The IRT is AC powered and was not operational during this time period.

• Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
• up_short_hemisp_std
• Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
• Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
• sfc_ir_temp_std
• Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
• Effective Surface (Skin) Temperature(sfc_ir_temp)
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)

• Raw data stream - documentation not supported

• inst_sfc_ir_signal

NSA/METTWR/C2 - Wind speed values artificially low

Wind speed values were artificially low due to snow/ice accumulation on the anemometer 
cups during blizzard conditions.  The heaters on the cups were not able to keep up with 
conditions.

• Wind speed, vector-averaged(WinSpeed_U_WVT)
• Wind speed, mean(WinSpeed_S_WVT)

NSA/METTWR/C2 - CMH Data incorrect

CMH data was incorrect due to blockage of intake by heavy, wet snow during blizzard 
conditions.

• VPCMH
• CMHDP
• SatVPCMH
• CMHRH
• CMHTemp

NSA/METTWR/C2 - PWS data incorrect

The Present Weather Sensor measurement optics were blocked by heavy, wet snow during 
blizzard conditions.

• PWCod1hr
• CumSnow
• PWSAlarm
• CumH2O
• PWcod15mi
• InstPWCod
• Visibility, 1 minute average(AvgVis1mi)
• Precipitation Rate(PCPRate)
• Visibility, 10 minute average(AvgVis10m)

NSA/METTWR/C2 - CMH Intake Fan Failure

Intake fan failing causing poor readings from the CMH.

• VPCMH
• CMHDP
• SatVPCMH
• CMHRH
• CMHTemp

NSA/METTWR/C2 - CMH Data Suspect

CMH data was suspect due to incorrect intake fan installed.  Proper spares were not on 
hand.

• VPCMH
• CMHDP
• SatVPCMH
• CMHRH
• CMHTemp

NSA/METTWR/C2 - CMH Data Suspect

CMH data was suspect due to blockage of intake by snow.

• VPCMH
• CMHDP
• SatVPCMH
• CMHRH
• CMHTemp

NSA/GNDRAD/C1 - Reprocess: Longwave Calibration error

Modified pyrgeometer calibration procedures were implemented beginning in December 2003.  
These modified procedures introduced a calibration bias in the longwave data.  The 
previous procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations.                                                             
                The data collected while the incorrect procedures were in place are 
being reprocessing to remove the calibration bias.  Note, this also affected standard 
deviation, maximum and minimum data fields.

• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

NSA/GNDRAD/C2 - Reprocess: Longwave Calibration error

Modified pyrgeometer calibration procedures were implemented beginning in December 2003.  
These modified procedures introduced a calibration bias in the longwave data.  The 
previous procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations.                                                             
                The data collected while the incorrect procedures were in place are 
being reprocessing to remove the calibration bias.  Note, this also affected standard 
deviation, maximum and minimum data fields.

• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

NSA/SONDE/C1 - Noisy/Unstable RH and dew point data

The RH readings during the first 8 minutes of this sounding include three apparently 
incorrect oscillations to near-zero values.  After checking the absolutely raw data, it seems 
as though this period was excessively noisy, resulting in many missing values.  The noise 
abatted and the remaining sounding values are valid.

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

NSA/SONDE/C1 - Bad surface RH and temperature values

This is a subtle problem that might escape notice.  For the identified sonde launches, the 
ground station lost its signal between the time it was removed from the ground check set 
and the time it was launched.  As a result, the software, which automatically determines 
the launch time and surface conditions at time of launch mistakenly used values of 
temperature and RH representative of the ground check set and the GW rather than of the 
ambient conditions before launch.  The bad values influenced only the first few samples and the 
remainder of the sounding values are correct.  

A procedural problem was identified and corrected.

• Dry Bulb Temperature(tdry)
• Dewpoint Temperature(dp)
• Humidity, relative(rh)

NSA/METTWR/C2 - 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.

• Pressure, atmospheric(AtmPress)

NSA/GNDRAD/C1 - Incorrect calibration coefficients

BarrowC1, Gndrad. On Aug 11th the PSP-US was changed out and the Campbell program was 
changed to reflect this.  However, an old program that uses the 4 coefficient PIR cal factors 
was used. The PIR-UIR was not changed out, however, the logger program coeffs reverted 
back to the 4 Coeffcients.  The Eppley PIR-UIR coefficients for this S/N 30168F3 are :  
K0=0.0, K1(aka k)=.25253, K2= 1.0, K3=-4, Kr=0.0.

• net_min
• pir1_mean
• net_std
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
• pir1_sd
• net_mean
• net_sd
• up_long_hemisp_std
• net_max
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• pir1_max
• pir1_min

• Raw data stream - documentation not supported

• pir1_case_therm
• inst_up_long_hemisp_tp
• inst_up_long_case_resist
• pir1_dome_therm
• pir1_voltage
• inst_up_long_dome_resist

• inst_up_long_dome_resist
• inst_up_long_hemisp_tp
• inst_up_long_case_resist

NSA/METTWR/C2 - CMH data missing and/or incorrect during maintenance.

CMH measured data was missing and the derived variables were incorrect due to routine 
maintenance.

• VPCMH
• CMHDP
• SatVPCMH
• CMHRH
• CMHTemp

NSA/METTWR/C2 - PWS data missing/incorrect due to maintenance.

Present Weather Sensor data was missing or incorrect due to maintenance activities 
repeated approximately daily as we were trying to correct another problem.

• PWCod1hr
• CumSnow
• PWSAlarm
• CumH2O
• PWcod15mi
• InstPWCod
• Visibility, 1 minute average(AvgVis1mi)
• Precipitation Rate(PCPRate)
• CMHTemp
• Visibility, 10 minute average(AvgVis10m)

NSA/METTWR/C2 - Met data incorrect due to tower being lowered for maintenance.

Data from the tower is not representative of local conditions due to the tower being 
lowered for radiometer change.  Sensors not attached to the tower such as the Present Weather 
Sensor, the Chilled Mirror Hygrometer and the Barometer were not affected.

• RH2m_STD
• Wind speed, vector-averaged(WinSpeed_U_WVT)
• DP5m_STD
• Relative humidity, average, at 2-m height(RH5m_AVG)
• WinDir_SDU_WVT
• VP5m_STD
• Temperature, air, average, at 2-m height(T2m_AVG)
• T2m_STD
• Wind speed, mean(WinSpeed_S_WVT)
• Temperature, dew point, average, at 5-m height(DP5m_AVG)
• VP2m_STD
• T5m_STD
• Pressure, vapor, at 2-m height(VP2m_AVG)
• RH5m_STD
• Relative humidity, average, at 2-m height(RH2m_AVG)
• Pressure, vapor, at 5-m height(VP5m_AVG)
• DP2m_STD
• Temperature, dew point, average, at 2-m height(DP2m_AVG)
• Wind direction, vector-averaged(WinDir_DU_WVT)
• Temperature, air, average, at 5-m height(T5m_AVG)

NSA/SONDE/C1 - RH values offset due to error in ground check

Background: After installation of the latest software update , we began performing formal 
ground checks on RS92 radiosondes.  By comparing the radiosonde readings with reference 
values in a controlled environment, the ground check is intended to ensure that the 
radiosonde sensors are in calibration before launch.  The radisonde values during the ground 
check process are recorded automatically; the reference values are entered by the operator. 
 If the radiosonde readings vary from the reference values, the system 'corrects' the 
radiosonde values.  In the case of RH, the correction is applied as an offset (true RH = 
indicated RH + correction).

Problem: Some operators misunderstood the ground-check procedure and entered the 
radiosonde values of RH rather than the reference value (assumed 0%RH), thus, some soundings done 
during this period have RH values that are different from what they would be if the 
ground check procedure had been done correctly.

Consequence:  Because the RH corrections generally are small (averaging about 0.5% RH) and 
the precision of the reported RH data during this time period is 1% RH, some values will 
not be affected at all; others will be off by about 1% RH (still within the stated 
accuracy of the sensor).  Furthermore, because entering the radiosonde value as the reference 
value results in a near zero 'correction,' one may view these soundings as being done 
without the ground check correction.  Also note that the dew point value will be suspect as well.

I am attaching below a listing of the soundings that were affected during the indicated 
time period.  Users can see the magnitude of the problem and choose whether or not to apply 
an offset in RH.  Note that application of the offset to the processed RH data (in the 
netCDF file) will not have the same effect of applying the correction to the absolutely 
raw data (before processing), but the differences should be insignificant.  Also note that 
the corrections for each sounding are included in the netCDF header information.  These 
attributes are named 'humidity_correction' and 'humidity_correction_2'.  The values of RH 
indicated by the radiosonde while it is in the ground check set are in attributes 
'humidity_gc_sonde' and 'humidity_gc_sonde_2.'  There is an RH reading for each of the two RH 
sensors used in the RS92 radiosonde.

Here is the list - RH1 and RH2 are the radiosonde readings in the ground check set.  Ref 
is the reference value entered by the operator.  The correcte reference value should be 
0%.  To obtain an approximation to the RH value that would have been recorded if the ground 
check had been done properly, subtract the Ref value from the indicated RH.

 YYYYMMDD  HHMM  SerialNo     RH1     RH2     Ref
 20060713  0532  B1924431    0.30    0.20    0.30
 20060713  1751  B1854963    0.20    0.30    0.30
 20060714  0521  B1924425    0.40    0.40    0.40
 20060714  1739  B1854206    0.30    0.30    0.30
 20060715  0522  B1715127    1.20    1.20    1.20
 20060715  1737  B1854966    0.60    0.60    0.60
 20060716  0508  B1715126    0.40    0.40    0.40
 20060716  1732  B1844098    0.50    0.50    0.50
 20060717  0517  B1914170    0.40    0.40    0.40
 20060718  0516  B1914173    0.70    0.70    0.70
 20060720  0523  B1854149    0.40    0.40    0.40
 20060721  0517  B1914153    0.40    0.40    0.40
 20060722  0521  B1844097    1.00    1.10    1.10
 20060722  1730  B1914174    0.60    0.70    0.70
 20060723  0537  B1714439    0.40    0.40    0.40
 20060723  1734  B1734155    0.50    0.50    0.50
 20060724  0529  B1134336    0.50    0.50    0.50
 20060725  0525  B1754099    0.60    0.70    0.70
 20060726  0541  B1844108    1.80    1.80    1.80
 20060727  0520  B1714382    0.70    0.80    0.70
 20060728  0531  B1854116    0.80    0.80    0.80
 20060729  0527  B1724027    1.00    1.00    1.00
 20060729  1726  B1714392    0.70    0.80    0.80
 20060730  0522  B1854100    0.70    0.80    0.80
 20060730  1724  B1854764    0.90    1.00    1.00
 20060731  0515  B1664086    0.90    0.80    0.90
 20060801  0520  B1724758    1.50    1.50    1.50
 20060801  1729  B1754116    1.10    1.10    1.10
 20060802  0518  B1724516    0.80    0.80    0.80
 20060803  0523  B1674148    0.80    0.80    0.80
 20060804  0532  B1754092    0.90    0.90    0.90
 20060804  1727  B1844117    3.50    3.50    3.50
 20060805  0531  B1714741    0.30    0.30    0.30
 20060805  1728  B1754098    0.30    0.30    0.30
 20060806  0528  B1844115    0.40    0.40    0.40
 20060806  1728  B1914161    0.20    0.20    0.20
 20060807  0530  B1714549    0.30    0.30    0.30
 20060808  0517  B1844107    0.50    0.50    0.50
 20060808  1744  B1914166    0.20    0.20    0.20
 20060809  0527  B1914164    0.30    0.40    0.40
 20060809  1736  B1914163    0.30    0.30    0.30
 20060810  0521  B1914160    0.40    0.50    0.50
 20060810  1745  B1744671    0.40    0.40    0.40
 20060811  0525  B1854965    0.50    0.50    0.50
 20060811  1753  B1724131    0.10    0.10    0.10
 20060812  0527  B1754104    0.50    0.50    0.50
 20060812  1740  B1854256    0.30    0.40    0.40
 20060813  0522  B1854240    0.30    0.40    0.40
 20060814  0525  B1714106    0.20    0.20    0.20
 20060814  1742  B1854106    0.40    0.40    0.40
 20060815  0534  B1914169    0.50    0.60    0.60
 20060815  1734  B1854233    0.60    0.70    0.70
 20060816  0539  B1724791    0.20    0.20    0.20
 20060816  1732  B1914171    0.10    0.20    0.20
 20060817  0535  B1354283    0.10    0.10    0.10
 20060817  1740  B1354574    0.40    0.40    0.40
 20060818  0516  B1354633    0.50    0.40    0.50
 20060818  1744  B1364673    0.20    0.20    0.20
 20060819  0538  B1364126    0.20    0.30    0.30
 20060819  1745  B1354598    0.50    0.60    0.60
 20060820  0532  B1354290    1.10    1.10    1.10
 20060820  1729  B1354317    0.40    0.40    0.40
 20060821  0530  B1354545    0.60    0.70    0.70
 20060821  1728  B1354516    0.70    0.70    0.70
 20060822  0524  B1354619    0.50    0.60    0.60
 20060822  1728  B1364377    0.40    0.40    0.40
 20060823  0533  B1354309    0.30    0.30    0.30
 20060823  1730  B1354527    0.70    0.70    0.70
 20060824  0533  B1354230    0.60    0.60    0.60
 20060824  1812  B1354587    0.70    0.70    0.70
 20060825  0517  B1354614    0.70    0.70    0.70
 20060825  1730  B1354630    0.60    0.60    0.60
 20060826  0537  B1334114    0.90    0.90    0.90
 20060826  1734  B1354246    0.70    0.70    0.70
 20060827  0508  B1354534    0.70    0.70    0.70
 20060827  1729  B1354618    0.60    0.60    0.60
 20060828  0517  B1354115    0.40    0.40    0.40
 20060828  1738  B1354206    0.50    0.60    0.60
 20060829  0516  B1354617    0.50    0.60    0.60
 20060829  1717  B1354622    0.50    0.60    0.60
 20060830  0511  B1354314    0.40    0.50    0.50
 20060830  1732  B1354537    0.60    0.70    0.70
 20060831  1802  B1354239    0.60    0.80    0.80
 20060905  1724  B1354626    0.60    0.60    0.60
 20060906  0522  B1354525    0.60    0.80    0.80
 20060906  1734  B1354107    0.50    0.50    0.50
 20060907  0537  B1354543    0.70    0.70    0.70
 20060907  1803  B1354586    0.80    0.80    0.80
 20060908  0531  B1354519    0.60    0.60    0.60
 20060908  1728  B1354224    0.60    0.60    0.60
 20060909  0534  B1354532    0.70    0.80    0.80
 20060909  1732  B1354513    0.80    0.90    0.90
 20060910  0516  B1354125    0.60    0.70    0.60
 20060910  1727  B1354110    0.40    0.50    0.50
 20060911  0528  B1354235    0.90    0.90    0.90
 20060911  1849  B1354514    0.70    0.70    0.70
 20060912  0525  B1354124    0.60    0.70    0.70
 20060913  0534  B1344478    0.50    0.50    0.50
 20060914  0520  B1354226    0.70    0.70    0.70
 20060915  0529  B1344459    0.40    0.50    0.50
 20060916  0532  B1344469    0.50    0.40    0.50
 20060916  1732  B1354106    0.50    0.60    0.60
 20060917  0527  B1354210    0.70    0.70    0.70
 20060918  0533  B1354087    0.60    0.60    0.60
 20060919  0526  B1354097    0.70    0.50    0.60
 20060920  0516  B1344462    0.50    0.40    0.50
 20060920  1810  B1354536    0.70    0.70    0.70
 20060921  0534  B1354112    0.50    0.60    0.60
 20060921  1800  B1344502    0.40    0.40    0.40
 20060922  0525  B1354531    0.70    0.80    0.80
 20060922  1736  B1354541    0.70    0.70    0.70
 20060923  0519  B1354101    0.50    0.60    0.60
 20060923  1738  B1354576    0.70    0.50    0.70
 20060924  0536  B1354095    0.60    0.60    0.60
 20060925  0536  B1354098    0.60    0.60    0.60
 20060925  1755  B1354100    0.50    0.50    0.50
 20060926  0531  B1334691    0.70    0.70    0.70
 20060926  1742  B1354108    0.40    0.50    0.50

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry

The output precision of the following variables was increased 20060929:

   alt	changed from 1m to 0.1m
   dp	changed from 0.1degC to 0.01degC
   pres changed from 0.1 hPa to 0.01 hPa
   RH	changed from 1%RH to 0.01%RH
   tdry changed from .1degC to 0.01degC

Note that the increase in precision does not necessarily imply an increase
in accuracy.  Users are cautioned to continue to use their best scientific
judgement when using these or any other data.

• alt
• Dry Bulb Temperature(tdry)
• Dewpoint Temperature(dp)
• Humidity, relative(rh)
• Pressure, atmospheric, constant value of model level, RUC model output(pres)

NSA/SONDE/C1 - Incorrect surface values of T and RH

The radiosonde was launched too quickly after being removed from the ground check set.  As 
a result, the system did not equilibrate with the local ground conditions and the 
automatically entered surface values are incorrect.

• Dry Bulb Temperature(tdry)
• Dewpoint Temperature(dp)
• Humidity, relative(rh)

NSA/SONDE/C1 - RH sensor failure

It appears that one of the two RH sensors on this radiosonde was affected by ice after 
emerging from a low cold cloud.  As a result the reported RH values oscillate by about 10 
percent until the alternate heating cycle stops.  I suspect the lower value is more close 
to correct, but can't be absolutely sure.

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

NSA/METTWR/C2 - 2m Temp/RH sensor blocked with snow

The 2m RH, Dew Point and Vapor Pressure values are incorrect due to the intake of the 
aspirated shield being blocked with snow and ice.  The RH% values are artificially larger 
than the 5m and Chilled Mirror values.

• RH2m_STD
• Pressure, vapor, at 2-m height(VP2m_AVG)
• Relative humidity, average, at 2-m height(RH2m_AVG)
• DP2m_STD
• Temperature, dew point, average, at 2-m height(DP2m_AVG)
• VP2m_STD

NSA/SONDE/C1 - Incorrect surface RH value

For an unknown reason the surface RH was reported a 0%.  Becuase these values are entered 
automatically by the system, this is NOT likely an operator error.  Examination of the 
raw data shows that the surface RH at launch time was approximately 81.2 %RH.

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

NSA/SONDE/C1 - Temperature sensor broke at launch

The temperature sensor on this sonde broke at launch.  As a result all the thermodynamic 
data are incorrect.  The wind data are OK, though there will be some uncertainty in the 
altitude values.  This sounding was done at a non-standard time and it isn't clear whether 
it was delayed for some reason or a RHUBC sounding.  In either case, there is no fix.

• alt
• Dry Bulb Temperature(tdry)
• Dewpoint Temperature(dp)
• Humidity, relative(rh)
• asc

NSA/RWP/C1 - Instrument problem

When data returned to ingest the windcon wind direction and wind speeds are not comparing 
well with the co-located sondes.  Wind direction values are constant, with no changes.  
Problem is that the phase shifter wiring was bad when it was reinstalled.

• range_gate
• prf
• sitime
• bins
• Backscatter, doppler spectrum, 915 MHz RWP(spc_amp)
• ncoh
• alt
• elevation
• ipp
• dly
• lon
• vband
• tditime
• bswitch
• beam
• lat
• plen
• nheight
• sampr
• rgs
• time_offset
• oband
• pcbits
• rgl
• nspc
• rgf
• base_time
• vsr
• spcavetim
• height_t

• Eastward Wind Component(u_wind)
• lon
• nspc
• Wind speed, horizontal, at altitude, 915 MHz RWP(spd)
• vvsr
• power
• base_time
• ovsr
• nheight
• plen
• azimuth1
• azimuth0
• azimuth3
• azimuth2
• Beam 2 radial wind speed(vel2)
• Wind direction, horizontal, at altitude, 915 MHz RWP(dir)
• azimuth4
• Beam 1 radial wind speed(vel1)
• Beam 4 radial wind speed(vel4)
• Beam 3 radial wind speed(vel3)
• avgint
• time_offset
• nrec0
• oband
• nrec1
• tditime
• nrec2
• nrec3
• height_p
• nrec4
• sampr
• vband
• rgl
• pcbits
• rgf
• Beam 0 radial wind speed(vel0)
• bswitch
• spcavetim
• ipp
• range_gate
• lat
• rgs
• nrcns4
• nrcns3
• nrcns2
• nrcns1
• nrcns0
• ncns1
• ncns0
• ncns3
• ncns2
• ncns4
• elevation0
• ncoh
• Northward Wind Component(v_wind)
• elevation2
• elevation1
• elevation4
• elevation3
• snr3
• snr4
• snr0
• snr1
• snr2
• prf
• alt
• dly
• sitime

• rgl
• rgs
• tditime
• Signal to noise ratio(snr)
• oband
• range_gate
• rgf
• nspc
• spcavetime
• Spectral width(specw)
• prf
• nheight
• noise
• height_t
• pcbits
• base_time
• lat
• alt
• ipp
• dly
• vband
• Mean radial beam velocity(mdf)
• sitime
• plen
• ncoh
• bswitch
• time_offset
• sampr
• lon
• vsr
• elevation
• beam

NSA/GNDRAD/C1 - Preventive maintenance

Preventive maintenance including ventilator repairs and instrument changeout during this 
time resulted in data that are not scientifically relevant.

• Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
• psp1_sd
• net_std
• net_mean
• net_max
• up_long_hemisp_std
• psp1_mean
• pir1_max
• Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
• up_short_hemisp_std
• net_min
• pir1_mean
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
• pir1_sd
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
• net_sd
• psp1_min
• psp1_max
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• pir1_min

• inst_up_long_dome_resist
• inst_up_short_hemisp
• inst_up_long_hemisp_tp
• inst_up_long_case_resist

NSA/GNDRAD/C1 - Missing data

Data are missing and unrecoverable.

• Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
• Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
• up_short_hemisp_std
• inst_up_long_hemisp_tp
• alt
• lon
• inst_up_long_hemisp_case_temp
• Effective Surface (Skin) Temperature(sfc_ir_temp)
• vBatt
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)
• base_time
• inst_up_long_hemisp_dome_temp
• Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
• sfc_ir_temp_std
• up_long_hemisp_std
• lat
• Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
• logger_temp
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• time
• time_offset

NSA/GNDRAD/C1 - Reprocessed: Incorrect calibration coefficient

Installed Gndrad PSP (upwelling shortwave hemispheric irradiance) had calibration 
coefficient RS applied when it should have used Rsc.  ARM is using IR corrected coefficients 
Rsc@45 and CFc@45 for PSPs deployed at all facilities.  

PSP #32012F3 should use RSc@45=109.39 and not Rs@45=110.97.  

Reprocessed to correct upwelling shortwave hemispheric irradiance (US) by:
US(new) = (US(old) / 110.97 ) * 109.39

Reprocessing completed March 2008.

• Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
• up_short_hemisp_std
• Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)

• inst_up_short_hemisp

NSA/GNDRAD/C1 - Upwelling PIR ventilator fan failure

The PIR exhibited a positive bias of approximately 6 W/m2 compared to the upwelling IRT 
due to ventilator fan failure.  Thus, the up_long_hemisp, data stream is high by about 6 
W/m2.    
   
Bias is not consistent and depends on atmospheric conditions. Either disregard the 
up_long_hemisp data or use the IRT for an estimate of the up_long_hemisp values during this time 
period.

• inst_up_long_hemisp_tp
• inst_up_long_hemisp_dome_temp
• inst_up_long_hemisp_case_temp
• up_long_hemisp_std
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Maxima(up_long_hemisp_max)
• Upwelling Longwave Hemispheric Irradiance, Unventilated Pyrgeometer, Minima(up_long_hemisp_min)

• inst_up_long_hemisp_tp
• inst_up_long_hemisp_case_resist
• inst_up_long_hemisp_dome_resist

NSA/GNDRAD/C1 - Net radiometer removed

The net radiometer was removed from the NSA.C1 GNDRAD instrument suite on Feb 3, 2000.  
Net rad variables were filled with garbage data until Sept 23, 2000 and with missing values 
(-9999) until 20041103.  The net rad variables were removed from the netcdf files after 
20041103.

A reprocessing task (RID-526) has been submitted to the queue to address the need to add 
metadata to the NSA.C1 GNDRAD netcdf files documenting the missing data as well as to move 
toward a consistent datastream format throughout time.

• base_time

• net_std
• net_mean
• net_max
• net_min
• net
• net_sd

NSA/GNDRAD/C2 - Reprocess: IRT insufficiently heated

IRT had insufficient heating to maintain an internal reference temperature above 0 degrees 
C. Measurements of surface temperature were over-estimated when instrument was below 
freezing.

Data will be reprocessed, but users can correct data using the following correction 
factor:

If T_reference < -5?C, then

  IRT_corrected = (IRT_original - 32.993K)/0.87238

where T_reference can be estimated with the ambient temperature (e.g. 
inst_up_long_hemisp_dome_temp or inst_up_long_dome_temp)

• Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
• Effective Surface (Skin) Temperature(sfc_ir_temp)
• Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
• sfc_ir_temp_std

NSA/SONDE/C1 - Wind data missing

A GPS problem associated with Vaisala BBSS ground station software issues caused the 
ground stations to enter into an error state when using GPS wind finding. In some instances, 
the flight was aborted due to the error state and not data was collected.  A workaround 
was developed to allow sondes to be launched without collecting wind data.

• wstat
• Northward Wind Component(v_wind)
• Eastward Wind Component(u_wind)
• Mean Wind Speed(wspd)

NSA/RWP/C1 - Missing data blocks

The nsa915rwpC1 instrument was being re-booted at the end of the hour resulting in the 
unnecessary data loss.  The time of re-boot was modified to the middle of the hour to avoid 
the 1-2 data loss period.

• range_gate
• prf
• sitime
• bins
• Backscatter, doppler spectrum, 915 MHz RWP(spc_amp)
• alt
• ncoh
• elevation
• ipp
• dly
• lon
• vband
• tditime
• bswitch
• beam
• lat
• plen
• nheight
• sampr
• rgs
• time_offset
• oband
• pcbits
• rgl
• nspc
• rgf
• base_time
• vsr
• spcavetim
• height_t

• Eastward Wind Component(u_wind)
• lon
• nspc
• Wind speed, horizontal, at altitude, 915 MHz RWP(spd)
• vvsr
• power
• base_time
• ovsr
• nheight
• plen
• azimuth1
• azimuth0
• azimuth3
• azimuth2
• Beam 2 radial wind speed(vel2)
• Beam 1 radial wind speed(vel1)
• azimuth4
• Wind direction, horizontal, at altitude, 915 MHz RWP(dir)
• Beam 4 radial wind speed(vel4)
• Beam 3 radial wind speed(vel3)
• time_offset
• avgint
• nrec0
• tditime
• nrec1
• oband
• nrec2
• height_p
• nrec3
• nrec4
• sampr
• vband
• rgl
• pcbits
• rgf
• Beam 0 radial wind speed(vel0)
• bswitch
• spcavetim
• ipp
• range_gate
• lat
• rgs
• nrcns4
• nrcns3
• nrcns2
• nrcns1
• nrcns0
• ncns1
• ncns0
• ncns3
• ncns2
• ncns4
• elevation0
• ncoh
• Northward Wind Component(v_wind)
• elevation2
• elevation1
• elevation4
• elevation3
• snr3
• snr4
• snr0
• snr1
• snr2
• prf
• alt
• dly
• sitime

• smdf
• base_time
• Pressure, associated geometric height, at altitude, NGM model output(height)
• sampr
• Temperature, virtual, profile, merged from 50 and 915 MHz RASS(virtual_temp)
• ssnr
• lon
• sspecw
• rgs
• time_offset
• lat
• Spectral width(specw)
• alt
• Mean radial beam velocity(mdf)
• noise
• Signal to noise ratio(snr)

• rgl
• rgs
• tditime
• Signal to noise ratio(snr)
• oband
• range_gate
• rgf
• nspc
• spcavetime
• Spectral width(specw)
• prf
• nheight
• noise
• pcbits
• height_t
• base_time
• lat
• alt
• ipp
• dly
• vband
• Mean radial beam velocity(mdf)
• sitime
• plen
• ncoh
• bswitch
• time_offset
• sampr
• lon
• vsr
• elevation
• beam

• lon
• alt
• Backscatter, doppler spectrum, 915 MHz RWP(spc_amp)
• sampr
• Pressure, associated geometric height, at altitude, NGM model output(height)
• base_time
• time_offset
• rgs
• lat
• bins

• alt
• sampr
• Wind speed, vertical velocity, at altitude, 915 MHz RWP(vert_v)
• nrec
• base_time
• SNR Corrected Beam 0 Virtual Temperature(snr_virtual_temp_corr)
• lat
• ncns_virtual_temp_corr
• time_offset
• lon
• ncns_virtual_temp
• nrcns
• SNR Beam 0 Virtual Temperature(snr_virtual_temp)
• Temperature, virtual, at altitude, 10-min cons. avg, corrected, 915 MHz RWP/RASS(virtual_temp_corr)
• Pressure, associated geometric height, at altitude, NGM model output(height)
• SNR Vertical wind velocity(snr_vert_v)
• rgs
• avgint
• ncns_vert_v
• Temperature, virtual, profile, merged from 50 and 915 MHz RASS(virtual_temp)

NSA/SONDE/C1 - Wind data missing

After some power disruptions, the Power Supply board of the SPS220 ground station was 
damaged.  The damage caused the supply to not have enough power to run the GPS board.  
Switching to the back up DigiCora II did not alleviate the problem as the fix for GPS failure 
to all Vaisala sonde products had not been installed.  A different P/S was found and sent 
up to replace the failed one.

• Wind Direction(deg)
• Northward Wind Component(v_wind)
• Eastward Wind Component(u_wind)
• Mean Wind Speed(wspd)

NSA/GNDRAD/C1 - Reprocessed: Miscalibrated upwelling SW

On 7/20/2011 2211GMT Ops replaced the Gndrad upwelling shortwave instrument (PSP) but the 
calibration coefficients weren't changed until 07/25/2011 1842GMT.  

The up_short_hemisp data were reprocessed and archived in September 2011.

• Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Maxima(up_short_hemisp_max)
• up_short_hemisp_std
• Upwelling Shortwave Hemispheric Irradiance, Unventilated Pyranometer, Minima(up_short_hemisp_min)
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)

• inst_up_short_hemisp

NSA/GNDRAD/C1 - Incorrect data during power outage

During a power outage the IRT data were incorrect.

• Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
• sfc_ir_temp_std
• Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
• Effective Surface (Skin) Temperature(sfc_ir_temp)

• inst_sfc_ir_signal