SGP/MET/E13 - PWD data incorrect/missing

Data collection problems during the time period specified resulted in incorrect or missing 
PWD data.

• 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_precip_rate_mean_1min
• pwd_pw_code_15min
• pwd_pw_code_1hr
• pwd_pw_code_inst
• pwd_err_code

SGP/MET/E13 - Missing PWD data

PWD data were missing due to an accidental reset on the instrument.

• 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_precip_rate_mean_1min
• pwd_pw_code_15min
• pwd_pw_code_1hr
• pwd_pw_code_inst
• pwd_err_code

SGP/MWR3C/C1 - Incorrect or missing data

The 89-GHz receiver started to reset itself continuously. The problem was initially 
identified with a wrong cable connection, but it was later found that one pin in the power 
connector of the receiver was broken. The pin was pulled out to temporarily start the 
radiometer. After the receiver was replaced it was discovered that there was an additional 
problem with water infiltration in the mini j-box. The mini-jbox was removed and sent for repair.

• lat
• hail_duration
• wind_speed_avg
• base_time
• Rain Intensity(rain_intensity)
• Liquid water path best-estimate value, hourly mean(lwp)
• pwverr
• lon
• 89.0 GHz sky brightness temperature(tbsky89)
• wind_direction_min
• elevation
• wind_speed_max
• Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
• azimuth
• rain_accumulation
• surface_relative_humidity
• surface_temperature
• time_offset
• Rain Duration(rain_duration)
• hail_accumulation
• surface_pressure
• infrared_temperature
• Water vapor, precipitable, column-integrated on isobaric grid, from RUC model(pwv)
• rain_peak_intensity
• hail_intensity
• time
• wind_speed_min
• wind_direction_max
• wind_direction_avg
• 30.0 GHz sky brightness temperature(tbsky30)
• alt
• lwperr

SGP/MWR3C/C1 - Spikes in wind speed and direction

The surface wind speed and wind direction wre occasionally spiking to large values during 
daylight hours. The spikes did not match well with co-located MET values. On 7/9 the wind 
sensor was replaced with a spare.

• wind_direction_min
• wind_speed_min
• wind_speed_avg
• wind_direction_max
• wind_direction_avg
• wind_speed_max

SGP/MWR3C/C1 - Possible bias in 89 GHz brightness temperatures

The 89 GHz brightness temperatures appear slightly warm when compared to model 
computations. The bias appear to be about 1.5 K. This could affect the liquid water retrievals that 
may display a slight positive bias.

• 89.0 GHz sky brightness temperature(tbsky89)
• Liquid water path best-estimate value, hourly mean(lwp)
• Water vapor, precipitable, column-integrated on isobaric grid, from RUC model(pwv)

SGP/MET/E13 - Low logger voltage

Low logger voltage was reported. Low voltage may result in data spikes or dropouts.

• PWD 1 minute mean visibility(pwd_mean_vis_1min)
• pwd_cumul_rain
• PWD 10 minute mean visibility(pwd_mean_vis_10min)
• vapor_pressure_mean
• logger_temp
• temp_std
• vapor_pressure_std
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• pwd_precip_rate_mean_1min
• pwd_pw_code_15min
• tbrg_precip_total
• pwd_pw_code_1hr
• pwd_pw_code_inst
• Barometric Pressure(atmos_pressure)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Mean Air Temperature or Hardware Error(temp_mean)
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)
• pwd_cumul_snow
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• rh_std
• logger_volt
• Corrected total precipitation measured by TBRG(tbrg_precip_total_corr)
• pwd_err_code