SGP/MET/E11/E13/E15/E21/E31/E32/E33/E34/E35/E36/E37/E38/E39/E40/E41/E9 - Ice storm 
affected winds

An ice storm impaired the wind sensor mechanics during this time. At most sites, winds 
flatlined for a large part of 1/15. Data from 1/14 - 1/16 may not be accurate.

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

SGP/MET/E13 - Optical rain gauge data missing

No optical rain gauge data are available during this time.

• ORG precipitation rate mean(org_precip_rate_mean)

SGP/MET/STAMP/All - Freezing Rain Event

A freezing rain event potentially affected some of the STAMP and MET tipping bucket rain 
gauges.  The rain accumulation amounts generally agree (2 exceptions noted below) but the 
timing and rate of precipitation may disagree at times between the STAMP and MET.

Instruments at E33 and E39 were found to differ more than the expected uncertainty and 
will be covered in additional DQRs if a problem is found.

• tbrg_precip_total
• Corrected total precipitation measured by TBRG(tbrg_precip_total_corr)

SGP/MET/E13 - Optical rain gauge data parsing error

A data acquisition problem caused incorrect optical rain gauge data to be reported.

• ORG precipitation rate mean(org_precip_rate_mean)

SGP/Central Facility - Power Outage

Automated scripts show that these instruments were affected by a power outage at the 
central facility resulting in missing data.  Most of the instruments came back online on March 
6th but some took longer.

• PWD 10 minute mean visibility(pwd_mean_vis_10min)
• pwd_cumul_rain
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• PWD 1 minute mean precipitation rate(pwd_precip_rate_mean_1min)
• ORG precipitation rate mean(org_precip_rate_mean)
• qc_logger_volt
• Temperature mean(temp_mean)
• qc_temp_mean
• PWD 1 minute mean visibility(pwd_mean_vis_1min)
• qc_pwd_mean_vis_10min
• qc_org_precip_rate_mean
• temp_std
• qc_rh_mean
• pwd_pw_code_15min
• qc_tbrg_precip_total_corr
• qc_logger_temp
• qc_pwd_mean_vis_1min
• Wind speed vector mean(wspd_vec_mean)
• Wind direction vector mean(wdir_vec_mean)
• qc_pwd_cumul_rain
• Corrected total precipitation measured by TBRG(tbrg_precip_total_corr)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_pwd_pw_code_15min
• logger_temp
• qc_wdir_vec_mean
• vapor_pressure_std
• qc_pwd_pw_code_1hr
• pwd_pw_code_1hr
• qc_pwd_precip_rate_mean_1min
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_atmos_pressure
• Altitude above mean sea level(alt)
• pwd_cumul_snow
• North latitude(lat)
• qc_wspd_vec_mean
• time_offset
• qc_pwd_cumul_snow
• pwd_err_code
• East longitude(lon)
• qc_tbrg_precip_total
• qc_pwd_pw_code_inst
• qc_vapor_pressure_mean
• qc_time
• tbrg_precip_total
• pwd_pw_code_inst
• Atmospheric pressure(atmos_pressure)
• wdir_vec_std
• time
• qc_wspd_arith_mean
• base_time
• rh_std
• logger_volt

SGP/MET/E13 - Present weather detector data incorrect after power outage

A power interruption caused the data logger to read incorrect data from the present 
weather detector.

• PWD 1 minute mean visibility(pwd_mean_vis_1min)
• PWD 10 minute mean visibility(pwd_mean_vis_10min)
• pwd_cumul_rain
• pwd_cumul_snow
• PWD 1 minute mean precipitation rate(pwd_precip_rate_mean_1min)
• pwd_pw_code_15min
• pwd_pw_code_1hr
• pwd_err_code
• pwd_pw_code_inst

SGP/MET/E13 - Optical rain gauge data incorrect after power outage

A power interruption caused the data logger to read incorrect data from the optical rain 
gauge.

• ORG precipitation rate mean(org_precip_rate_mean)

SGP/MET/E13 - Wind speed incorrect

A broken wind speed signal wire caused incorrect data during this time.

• Wind speed vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)

SGP/MET/E13 - Optical rain gauge data incorrect after power outage

A power interruption caused the data logger to read incorrect data from the optical rain
gauge.

• ORG precipitation rate mean(org_precip_rate_mean)