NSA/MET/C1 - Temp/RH/wind data questionable

New wind sensors and new T/RH probes were being installed during this time period.  The 
tower booms were lowered and much of the data collected were not at listed heights nor were 
the data accurate due to configurations during install.

• qc_wspd_arith_mean
• qc_rh_mean
• qc_wspd_vec_mean
• vapor_pressure_std
• Wind speed vector mean(wspd_vec_mean)
• qc_temp_mean
• temp_std
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• dew_point_mean
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• qc_wdir_vec_mean
• Mean Air Temperature or Hardware Error(temp_mean)
• vapor_pressure_mean
• wdir_vec_std
• qc_vapor_pressure_mean
• qc_dew_point_mean
• trh_err_code
• dew_point_std
• rh_std

• wdir_vec_std
• qc_wspd_arith_mean
• qc_temp_mean
• trh_err_code
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• qc_wdir_vec_mean
• dew_point_mean
• Mean Air Temperature or Hardware Error(temp_mean)
• temp_std
• Wind speed vector mean(wspd_vec_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• dew_point_std
• rh_std
• qc_rh_mean
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• vapor_pressure_mean
• vapor_pressure_std
• qc_wspd_vec_mean
• qc_dew_point_mean
• qc_vapor_pressure_mean

NSA/MET/C1 - PWS data missing due to snow impaction

Blizzard conditions caused the optics to become impacted with snow and ice rendering the 
Present Weather Detector inoperative.

• qc_pws_cumul_snow
• qc_pws_pw_code_15min
• qc_pws_precip_rate_mean_1min
• qc_pws_cumul_rain
• PWS 10 minute mean visibility(pws_vis_mean_10min)
• pws_err_code
• qc_pws_vis_mean_1min
• pws_cumul_rain
• pws_pw_code_1hr
• Rain, surface, 1-min avg(pws_precip_rate_mean_1min)
• pws_cumul_snow
• pws_pw_code_15min
• qc_pws_pw_code_inst
• pws_pw_code_inst
• qc_pws_pw_code_1hr
• qc_pws_err_code
• qc_pws_vis_mean_10min
• PWS 1 minute mean visibility(pws_vis_mean_1min)

NSA/MET/C1 - Wind data intermittent

There was a loose wire on the serial data multiplexer causing the wind data to become 
missing during high wind situations.  The high winds caused the enclosure to vibrate making 
the connection intermittent.

• Wind speed, lower, 1-min avg(wspd_arith_mean)
• qc_wspd_arith_mean
• qc_wspd_vec_mean
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• qc_wdir_vec_mean
• Wind speed vector mean(wspd_vec_mean)
• wdir_vec_std

• wdir_vec_std
• qc_wspd_arith_mean
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• qc_wspd_vec_mean
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• qc_wdir_vec_mean
• Wind speed vector mean(wspd_vec_mean)

NSA/MET/C1 - CMH data missing

The data from the CMH was missing during these times due to a failing logic board.  The 
board was replaced.

• cmh_dew_point
• qc_cmh_dew_point
• qc_cmh_rh
• cmh_temp
• cmh_vapor_pressure
• qc_cmh_vapor_pressure
• qc_cmh_sat_vapor_pressure
• qc_cmh_temp
• cmh_sat_vapor_pressure
• cmh_rh

NSA/MET/C1 - Met data incorrect during calibration

All met data from the tower booms (temp, RH, winds and derived variables) were incorrect 
due to the booms being lowered from their measurement heights.  Additionally, the 
scaffolding was located directly adjacent to the booms affecting the wind field and the Temp/RH 
data.

• qc_wspd_arith_mean
• qc_rh_mean
• qc_wspd_vec_mean
• vapor_pressure_std
• Wind speed vector mean(wspd_vec_mean)
• qc_temp_mean
• temp_std
• qc_time
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• dew_point_mean
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• qc_wdir_vec_mean
• Mean Air Temperature or Hardware Error(temp_mean)
• vapor_pressure_mean
• wdir_vec_std
• qc_vapor_pressure_mean
• qc_dew_point_mean
• trh_err_code
• dew_point_std
• rh_std

• wdir_vec_std
• qc_wspd_arith_mean
• qc_temp_mean
• trh_err_code
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• qc_wdir_vec_mean
• dew_point_mean
• Mean Air Temperature or Hardware Error(temp_mean)
• temp_std
• Wind speed vector mean(wspd_vec_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• dew_point_std
• rh_std
• qc_rh_mean
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• vapor_pressure_mean
• vapor_pressure_std
• qc_wspd_vec_mean
• qc_dew_point_mean
• qc_vapor_pressure_mean

NSA/MET/C1 - PWS calibration

The PWS was undergoing calibration. Any data collected during this time is not 
representative of the atmospheric state.

• qc_pws_cumul_snow
• qc_pws_pw_code_15min
• qc_pws_precip_rate_mean_1min
• qc_pws_cumul_rain
• PWS 10 minute mean visibility(pws_vis_mean_10min)
• pws_err_code
• qc_pws_vis_mean_1min
• pws_cumul_rain
• pws_pw_code_1hr
• Rain, surface, 1-min avg(pws_precip_rate_mean_1min)
• pws_cumul_snow
• pws_pw_code_15min
• qc_pws_pw_code_inst
• pws_pw_code_inst
• qc_pws_pw_code_1hr
• qc_pws_err_code
• qc_pws_vis_mean_10min
• PWS 1 minute mean visibility(pws_vis_mean_1min)

NSA/MET/C1 - CMH calibration

CMH data missing due to removal of the sensor for annual calibration.

• cmh_dew_point
• qc_cmh_dew_point
• qc_cmh_rh
• cmh_temp
• cmh_vapor_pressure
• qc_cmh_vapor_pressure
• qc_cmh_sat_vapor_pressure
• qc_cmh_temp
• cmh_sat_vapor_pressure
• cmh_rh

NSA/MET/C1 - 2m RH values incorrect

The new t/rh probe installed during annual calibrations and checks began to exhibit 
readings that were biased high compared to the Chilled Mirror Hygrometer.  In high RH 
conditions the sensor would consistently report RH values in excess of 105%.  Comparisons to the 
other tower levels also suggested that the 2m level RH data is suspect.

• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• dew_point_mean
• qc_rh_mean
• vapor_pressure_std
• vapor_pressure_mean
• qc_dew_point_mean
• dew_point_std
• rh_std

• rh_std
• qc_rh_mean
• vapor_pressure_mean
• vapor_pressure_std
• dew_point_mean
• qc_dew_point_mean
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• dew_point_std
• qc_vapor_pressure_mean