SGP/CO2FLX/C1 - Reprocessing User Notes

Format Changes:
  To comply with archive standards, the name of the unlimited dimention variable in the 
cdf level b1 files was changed from 'record' to 'time'. This does not affect data quality.

• Additive WPL H correction to fc(fc_wpl_h)
• doy
• Mean horizontal wind speed(mean_rot_u)
• WPL LE correction to fc(fc_wpl_le)
• variance of variable t(var_t)
• friction velocity(ustar)
• base_time
• Variance of q(var_q)
• Variance of co2 density(var_c)
• Corrected sensible heat flux(h)
• theta
• site_elevation
• Mean sonic temp(mean_t)
• Mean H2O density(mean_q)
• mean_p
• rotated variance w(var_rot_w)
• rotated variance v(var_rot_v)
• Variance of rotated u(var_rot_u)
• WPL corrected latent heat flux(le)
• yyyydddhhmmss
• phi
• Mean CO2 density(mean_c)
• site_longitude
• WPL corrected CO2 flux(fc_corr)
• Monin-Obukhov length scale(Lmoni)
• Wind direction, at 10-m height, 30-min intervals(wdir)
• time_offset
• site_latitude
• zm

• Mean air temperature (lower level)(t_air_lower)
• Mean CO2 density(mean_c)
• z_m_soil_upper
• base_time
• Wind direction, at 10-m height, 30-min intervals(wdir)
• Average of two upper soil temperature sensors(mean_t_soil_upper)
• phi
• Mean relative humidity (upper level)(rh_upper)
• stderr_mean_m_soil_lower
• z_upper
• Mean air temperature (upper level)(t_air_upper)
• Downwelling longwave hemispheric irradiance; t_rad corrected(r_down_long_hemisp)
• Average of four lower soil moisture sensors(mean_m_soil_lower)
• Total downwelling shortwave radiation (LI-200 sensor)(r_tot)
• doy
• stderr_mean_g_soil
• mean_p
• Mean H2O density(mean_q)
• Mean sonic temp(mean_t)
• stderr_mean_t_soil_lower
• Average of four upper soil moisture sensors(mean_m_soil_upper)
• t_rad
• site_elevation
• stderr_mean_t_soil_middle
• Average of two lower soil temperature sensors(mean_t_soil_lower)
• yyyydddhhmmss
• Net solar radiation (NR-lite); t_rad corrected(r_net)
• Mean relative humidity (lower level)(rh_lower)
• rotated variance w(var_rot_w)
• z_lower
• zrad
• rotated variance v(var_rot_v)
• z_t_soil_lower
• Variance of rotated u(var_rot_u)
• Upwelling shortwave hemispheric irradiance; t_rad corrected(r_up_short_hemisp)
• Average of four soil heat flux probes(mean_g_soil)
• theta
• WPL LE correction to fc(fc_wpl_le)
• site_longitude
• friction velocity(ustar)
• Mean horizontal wind speed(mean_rot_u)
• Average of two middle soil temperature sensors(mean_t_soil_middle)
• zm
• Barometric Pressure(bar_pres)
• Downwelling shortwave hemispheric irradiance; t_rad corrected(r_down_short_hemisp)
• Additive WPL H correction to fc(fc_wpl_h)
• WPL corrected latent heat flux(le)
• z_m_soil_lower
• z_t_soil_middle
• Monin-Obukhov length scale(Lmoni)
• site_latitude
• Upwelling longwave hemispheric irradiance; t_rad corrected(r_up_long_hemisp)
• z_t_soil_upper
• time_offset
• Photosynthetic photon flux density (PAR)(ppfd)
• stderr_mean_m_soil_upper
• variance of variable t(var_t)
• stderr_mean_t_soil_upper
• Precipitation, total, derived from ETA model(precip)
• Variance of q(var_q)
• WPL corrected CO2 flux(fc_corr)
• Variance of co2 density(var_c)
• Corrected sensible heat flux(h)
• z_g_soil

• Mean CO2 density(mean_c)
• Mean sonic temp(mean_t)
• friction velocity(ustar)
• mean_p
• Mean H2O density(mean_q)
• Wind direction, at 10-m height, 30-min intervals(wdir)
• zm
• time_offset
• site_latitude
• yyyydddhhmmss
• rotated variance v(var_rot_v)
• Variance of rotated u(var_rot_u)
• rotated variance w(var_rot_w)
• WPL corrected CO2 flux(fc_corr)
• Corrected sensible heat flux(h)
• variance of variable t(var_t)
• theta
• doy
• base_time
• phi
• site_longitude
• Variance of q(var_q)
• Variance of co2 density(var_c)
• Mean horizontal wind speed(mean_rot_u)
• Additive WPL H correction to fc(fc_wpl_h)
• Monin-Obukhov length scale(Lmoni)
• WPL corrected latent heat flux(le)
• site_elevation
• WPL LE correction to fc(fc_wpl_le)

• Variance of co2 density(var_c)
• zm
• yyyydddhhmmss
• Mean H2O density(mean_q)
• mean_p
• Additive WPL H correction to fc(fc_wpl_h)
• Mean sonic temp(mean_t)
• time_offset
• base_time
• site_elevation
• Mean CO2 density(mean_c)
• phi
• variance of variable t(var_t)
• Variance of q(var_q)
• Monin-Obukhov length scale(Lmoni)
• Wind direction, at 10-m height, 30-min intervals(wdir)
• site_longitude
• site_latitude
• Variance of rotated u(var_rot_u)
• rotated variance v(var_rot_v)
• rotated variance w(var_rot_w)
• doy
• Mean horizontal wind speed(mean_rot_u)
• Corrected sensible heat flux(h)
• WPL corrected latent heat flux(le)
• friction velocity(ustar)
• WPL corrected CO2 flux(fc_corr)
• theta
• WPL LE correction to fc(fc_wpl_le)

SGP/CO2FLX/C1 - Reprocessing User Notes

A subset of the radiation measurements had an incorrect gain applied to raw data in period 
from 20021218-20031218.  To correct for this, a multiplicative correction factor of 1.11 
were applied to raw data used for the following variables:

r_down_short_hemisp
r_down_long_hemisp
r_up_short_hemisp
r_up_long_hemisp

Note that the long wave variables are computed by adding the black body thermal radiation 
from the radiometer body to each of the long wave signals.  Hence, the multiplicative 
correction is applied to the raw long wave fluxes before adding in the flux from the 
radiometer body.

• Downwelling shortwave hemispheric irradiance; t_rad corrected(r_down_short_hemisp)
• Upwelling longwave hemispheric irradiance; t_rad corrected(r_up_long_hemisp)
• Upwelling shortwave hemispheric irradiance; t_rad corrected(r_up_short_hemisp)
• Downwelling longwave hemispheric irradiance; t_rad corrected(r_down_long_hemisp)

SGP/CO2FLX/C1 - Longwave Radiation Incorrect

Long wave radiation values (r_up_long_hemisp, r_down_long_hemisp) are bad 
due to correction with bad radiometer body temperature (t_rad) resulting
from a wiring issue.

• t_rad
• Upwelling longwave hemispheric irradiance; t_rad corrected(r_up_long_hemisp)
• Downwelling longwave hemispheric irradiance; t_rad corrected(r_down_long_hemisp)

SGP/CO2FLX/C1 - Reprocess: Units

Mean CO2 density units are incorrectly labeled as umol m-3. Units should be labeled as 
mmol m-3.

• Mean CO2 density(mean_c)

• Mean CO2 density(mean_c)

• Mean CO2 density(mean_c)

SGP/CO2FLX/C1 - Mean CO2 density incorrect, CO2 flux suspect

A problem was identified with the calibration of the instrument over the time period 
October 12, 2004 to October 20, 2004. The offset of the instrument is known to be incorrect 
over this time frame, and a study of the gain of the instrument is underway.

• Mean CO2 density(mean_c)
• WPL corrected CO2 flux(fc_corr)

SGP/CO2FLX/C1 - Reprocessed: User Notes

Replacement of LI-200 sensor (total downwelling shortwave radiation, variable r_tot) by a 
new LI-190 sensor (upwelling photosynthetic photon flux density, variable ppfd_up).

The new LI-190 sensor was:
- installed on December 9, 2004. 
- being tested from December 9, 2004 to December 22, 2004.
- operational after December 22, 2004.

Consequently:
1. variable "r_tot" is filled with missing values (qc_r_tot = 1) after December 9, 2004,
2. variable "ppfd_up" is filled with missing values (qc_ppfd_up = 1) prior December 22, 
2004.

• ppfd_up
• Total downwelling shortwave radiation (LI-200 sensor)(r_tot)

SGP/CO2FLX/C1 - downwelling longwave hemispheric irradiance incorrect

A problem was identified with the downwelling longwave hemispheric irradiance (variable 
"r_down_long_hemisp") calibration of our Kipp & Zonen CNR1 radiometer. The offset of the 
instrument is believed to be incorrect over the specified time frame, and a correction of 
the problem is underway.

• Downwelling longwave hemispheric irradiance; t_rad corrected(r_down_long_hemisp)

SGP/CO2FLX/C1 - Soil Temperature measurements

Current data quality check (qc) procedure does not catch spikes in soil temperature 
measurements. A new qc procedure is being tested and will improve the current procedure.

• Average of two upper soil temperature sensors(mean_t_soil_upper)
• Average of two middle soil temperature sensors(mean_t_soil_middle)
• Average of two lower soil temperature sensors(mean_t_soil_lower)

SGP/CO2FLX/C1 - Reprocess: calibration error

A problem was identified with the calibration of the instrument performed on May 27, 2005. 
A study to correct this bad calibration is underway.

• Mean H2O density(mean_q)
• WPL corrected CO2 flux(fc_corr)
• WPL corrected latent heat flux(le)

SGP/CO2FLX/C1 - Met stand was moved

Ameriflux program (Hank Loescher from Oregon state university) visits the site to 
intercompare his instruments with our 4m flux system.
The met stand was moved by 30 feet and consequently:
1. Soil moisture sensors were disconnected,
2. Soil temperature sensors were disconnected,
3. Soil heat plates were disconnected,
4. The true direction of the anemometer boom was 230 degrees instead of the regular 270 
degrees.

• Average of four upper soil moisture sensors(mean_m_soil_upper)
• Average of four lower soil moisture sensors(mean_m_soil_lower)
• Wind direction, at 10-m height, 30-min intervals(wdir)
• Average of two upper soil temperature sensors(mean_t_soil_upper)
• Average of two middle soil temperature sensors(mean_t_soil_middle)
• Average of two lower soil temperature sensors(mean_t_soil_lower)
• Average of four soil heat flux probes(mean_g_soil)

SGP/CO2FLX/C1 - downwelling longwave hemispheric irradiance incorrect

Downwelling longwave radiation measurements (variable "r_down_long_hemisp") are bad due to 
a wiring issue. Users should not use the downwelling longwave hemispheric irradiance 
during this period. The downwelling shortwave and longwave radiation at CF is also available 
from the Broadband Radiometer Station (BRS).

• Downwelling longwave hemispheric irradiance; t_rad corrected(r_down_long_hemisp)

SGP/CO2FLX/C1 - Disturbance around site

A bulldozer used to excavate the SGP Tower anchors was right around (within 10 feet) our 
systems.

• WPL corrected CO2 flux(fc_corr)
• Mean CO2 density(mean_c)

• WPL corrected CO2 flux(fc_corr)
• Mean CO2 density(mean_c)

• Mean CO2 density(mean_c)
• WPL corrected CO2 flux(fc_corr)

• WPL corrected CO2 flux(fc_corr)
• Mean CO2 density(mean_c)

SGP/CO2FLX/C1 - Farm operation

Soil temperature, soil moisture, soil heat flux and upwelling surface radiation (long, 
short, and PAR) measurements were not valid from 20070822 to 20070907 due to farm operations.

• stderr_mean_t_soil_lower
• Average of four upper soil moisture sensors(mean_m_soil_upper)
• stderr_mean_m_soil_lower
• Upwelling shortwave hemispheric irradiance; t_rad corrected(r_up_short_hemisp)
• stderr_mean_m_soil_upper
• stderr_mean_t_soil_middle
• Average of two lower soil temperature sensors(mean_t_soil_lower)
• Average of four soil heat flux probes(mean_g_soil)
• stderr_mean_t_soil_upper
• ppfd_up
• Average of four lower soil moisture sensors(mean_m_soil_lower)
• Upwelling longwave hemispheric irradiance; t_rad corrected(r_up_long_hemisp)
• Average of two upper soil temperature sensors(mean_t_soil_upper)
• stderr_mean_g_soil
• Average of two middle soil temperature sensors(mean_t_soil_middle)

SGP/CO2FLX/C1 - Reprocessing Notice (RID 432)

See below for details of reprocessing that was completed on 20141217.  Original DQR 
category: 5 (Transparent - Does not affect quality).

-----------------------------------------------------------

The height of the 4m instruments is 4.8 m and not 4.65 m as shown in b1 datastream

• zm

SGP/CO2FLX/C1 - Reprocessed: Recalibration

The 4m CO2 flux system was calibrated on May 25, 2005. After the calibration was 
performed, calibration coefficients used to measure CO2 density were not updated. This added an 
OFFSET to the CO2 density measurements.

The data have been reprocessed to address the offset.  The reprocessed data were archived 
in December 2008. Please retrieve the updated files for use in your analysis.

• Mean CO2 density(mean_c)

SGP/MET/E27 - Rain Values Incorrect

Rainfall reported as 600mm.  This value is incorrect.  Reason unknown; maintenance on this 
facility ceased 10/1/2009.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E9 - Wind Speed Data Incorrect

Wind speed sensor reference wire became detached.  This caused all wind sensor data to 
report near 0 m/s.

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

SGP/MET/E21 - Wind Sensor Inoperative Due to Ice

Due to an ice storm the wind sensor was inoperative.

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

SGP/MET/E4 - Wind sensor frozen

Icing resulted in flatlined wind speed and direction measurements.

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

SGP/MET/E20 - Rain Gauge Cable Chewed by Rodents

The rain gauge cable was damaged by rodents.  At the beginning of the time period, the 
data was falsely indicating nearly constant precipitation. Later it was falsely reporting no 
precipitation during a large rain event.

Data are not recoverable.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E11 - Intermittent incorrect windspeed

Starting on 10/20 the wind speed values intermittently flatlined.  Site operations 
reseated cable on 11/1.

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

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 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 - 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 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/E6 - Intermittent missing atmos pressure data

Atmospheric pressure data were intermittently missing during the period specified.  No 
known reason for the missing data.

• Atmospheric pressure(atmos_pressure)

SGP/MET/E21 - TimeCheck Error

Starting on 2010-06-07 the E21 system clock started drifting until the problem was 
corrected on 2010-06-29.  The maximum daily offset reported in the collection logs were:

Jun 7 offset:	  -5.04
Jun 8  Offset:	  -267.449039
Jun 9  Offset:	  -541.038624
Jun 10 Offset:	  -814.469141
Jun 11 Offset:	  -1076.862114
Jun 12 Offset:	  -1350.330223
Jun 13 Offset:	  -1623.639335
Jun 14 Offset:	  -1897.047754
Jun 15 Offset:	  -2170.552312
Jun 16 Offset:	  -2422.130746
Jun 17 Offset:	  -2684.607495
Jun 18 - Jun 22 (unknown)
Jun 23 Offset:	  -4204.730579

If the E21 system clock drifts the E21 Datalogger clocks will be set to the same incorrect 
time. The met data will be correct but the corresponding time stamp cannot be accurately 
known or simply corrected.

• wdir_vec_std
• qc_wdir_vec_mean
• Wind speed vector mean(wspd_vec_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_wspd_vec_mean
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• qc_atmos_pressure
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Atmospheric pressure(atmos_pressure)
• tbrg_precip_total
• Wind direction vector mean(wdir_vec_mean)
• qc_wdir_vec_std
• qc_temp_mean
• time
• base_time
• qc_rh_mean
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• time_offset
• qc_vapor_pressure_mean
• Temperature mean(temp_mean)
• qc_tbrg_precip_total
• qc_time
• qc_tbrg_precip_total_corr
• qc_wspd_arith_mean

SGP/MET/E9 - Time-stamp uncertainty

Between 20100503 and 20100507 the sgp.E9 instruments (EBBR, MET, SIRS, SWATS) time clocks 
were drifting outside the allowable +/-3 seconds.  During the specified period, the 
swings ranged from -326 to +637 seconds.

• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_wdir_vec_mean
• qc_temp_mean
• Wind speed vector mean(wspd_vec_mean)
• qc_wdir_vec_std
• Wind direction vector mean(wdir_vec_mean)
• Atmospheric pressure(atmos_pressure)
• qc_wspd_vec_mean
• qc_rh_mean
• time
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• qc_tbrg_precip_total
• qc_vapor_pressure_mean
• qc_tbrg_precip_total_corr
• Temperature mean(temp_mean)
• wdir_vec_std
• Vapor pressure mean, calculated(vapor_pressure_mean)
• base_time
• tbrg_precip_total
• time_offset
• qc_wspd_arith_mean
• qc_time
• qc_atmos_pressure
• Wind speed, lower, 1-min avg(wspd_arith_mean)

SGP/MET/E11 - Wind speed incorrect

Starting on 05/14 the wind speed values at E11 intermittently flat-lined.  The connections 
were reseated 5/18.

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

SGP/MET/E7 - T/RH values incorrect

The temperature, RH, and vapor pressure data were incorrect due to a loose connection.

• Vapor pressure mean, calculated(vapor_pressure_mean)
• Temperature mean(temp_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)

SGP/MET/E9 - RH probe failure

The T/RH probe failed. The resulting problem led to very unreasonable values of RH (~160%) 
which caused the vapor pressure values to also be incorrect.

• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)

SGP/MET/E36 - RH data questionable

Relative humidity was above 100% and below 0% at times. This also resulted in incorrect 
values for vapor pressure.

Data are suspect, but there may be some valuable data during time period. User should 
scrutinize data during this time period. Sensor replacement appears to have corrected the 
problem.

• Vapor pressure mean, calculated(vapor_pressure_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)

SGP/MET/E36 - Incorrect wind data

Wind speed and wind direction dropped out and to values near zero.  Site Ops reported 
tower found in down position 5/1/2012, possibly due to storm.

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

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 10 minute mean visibility(pwd_mean_vis_10min)
• pwd_cumul_rain
• Vapor pressure mean, calculated(vapor_pressure_mean)
• logger_temp
• temp_std
• vapor_pressure_std
• PWD 1 minute mean precipitation rate(pwd_precip_rate_mean_1min)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• pwd_pw_code_15min
• tbrg_precip_total
• pwd_pw_code_1hr
• pwd_pw_code_inst
• Atmospheric pressure(atmos_pressure)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Temperature mean(temp_mean)
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)
• pwd_cumul_snow
• Wind direction vector mean(wdir_vec_mean)
• rh_std
• logger_volt
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• pwd_err_code

SGP/MET/E31 - Pressure sensor failure

Atmospheric pressure data were incorrectly reported as 0 following a connection 
interruption. The instrument was replaced.

• Atmospheric pressure(atmos_pressure)

SGP/MET/E33 - Incorrect temp and wind data

Cattle chewed temperature and wind sensor instrument cables causing incorrect readings 
during this time period.

• Temperature mean(temp_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Wind direction vector mean(wdir_vec_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• wdir_vec_std
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)

SGP/MET/E32 - High RH values

Relative humidity values are frequently near 120%, especially during overnight hours 
(probable condensation on sensor).

• qc_rh_mean
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_vapor_pressure_mean

SGP/MET/E33 - Temp/RH sensor failure

Temp/RH sensor failed, causing problems with wind and logger data until 12/3/13 at 21:36 
(sensor was disconnected until a replacement was installed).

• Temperature mean(temp_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Wind direction vector mean(wdir_vec_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• wdir_vec_std
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)

SGP/MET/E13 - Ice on wind sensor

Wind speed and direction are flat-lined due to ice accumulation on the sensor.

• 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/E11/E15/E21/E31/E33/E34/E35/E36/E37/E38/E9 - Ice on wind sensors

Wind data was affected by ice buildup on the sensors. Data during this period should be 
used with caution. Exact times of sensor thaw are unknown.

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

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

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

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

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

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

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

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

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

SGP/MET/E32 - Ice on wind sensor

Wind speed and direction are flat-lined due to ice accumulation on the sensor.

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

SGP/MET/E35 - Data collection problem

Site communication problem resulted in missing/lost data during this time.

• qc_wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)
• Atmospheric pressure(atmos_pressure)
• qc_tbrg_precip_total
• qc_time
• qc_tbrg_precip_total_corr
• East longitude(lon)
• Wind direction vector mean(wdir_vec_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• tbrg_precip_total
• qc_temp_mean
• Altitude above mean sea level(alt)
• qc_wdir_vec_mean
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Temperature mean(temp_mean)
• qc_wspd_vec_mean
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_atmos_pressure
• time
• qc_wspd_arith_mean
• time_offset
• base_time
• qc_rh_mean
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• qc_vapor_pressure_mean
• wdir_vec_std
• North latitude(lat)

SGP/MET/E9 - Rain gauge clogged

The tipping bucket rain gauge was found to be clogged during bi-weekly maintenance. 
Precipitation data during this time may be suspect.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E32 - Rain gauge clogged

The tipping bucket rain gauge was found to be clogged during bi-weekly maintenance. 
Precipitation data during this time may be suspect.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E33 - Rain gauge clogged

The tipping bucket rain gauge was found to be clogged during bi-weekly maintenance. 
Precipitation data during this time may be suspect.

• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E11 - Data logger issue resulted in incorrect data

Data logger voltage dropped too low due to a battery problem. This caused incorrect 
temperature, relative humidity, vapor pressure, and atmospheric pressure data during this time.

• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Temperature mean(temp_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Atmospheric pressure(atmos_pressure)

SGP/MET/E11 - Missing data due to hardware problem

No data available during this period due to a hardware/communication issue.

• qc_wdir_vec_std
• qc_wspd_arith_mean
• Wind direction vector mean(wdir_vec_mean)
• time
• North latitude(lat)
• qc_vapor_pressure_mean
• Atmospheric pressure(atmos_pressure)
• Wind speed vector mean(wspd_vec_mean)
• qc_temp_mean
• qc_wdir_vec_mean
• wdir_vec_std
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Altitude above mean sea level(alt)
• time_offset
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• tbrg_precip_total
• qc_atmos_pressure
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_tbrg_precip_total_corr
• qc_rh_mean
• qc_time
• East longitude(lon)
• qc_tbrg_precip_total
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Temperature mean(temp_mean)
• base_time
• qc_wspd_vec_mean

SGP/MET/E11 - Collection problem caused missing data

A data collection problem caused periods of missing data for the times indicated. Between 
3/16 and 3/23, there are short instances of active data, but these values should be used 
with discretion.

• qc_wdir_vec_std
• qc_wspd_arith_mean
• Wind direction vector mean(wdir_vec_mean)
• time
• North latitude(lat)
• qc_vapor_pressure_mean
• Atmospheric pressure(atmos_pressure)
• Wind speed vector mean(wspd_vec_mean)
• qc_temp_mean
• qc_wdir_vec_mean
• wdir_vec_std
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Altitude above mean sea level(alt)
• time_offset
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• tbrg_precip_total
• qc_atmos_pressure
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_tbrg_precip_total_corr
• qc_rh_mean
• qc_time
• East longitude(lon)
• qc_tbrg_precip_total
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Temperature mean(temp_mean)
• base_time
• qc_wspd_vec_mean

SGP ALL INSTRUMENTS - Icing Event

An icing event (winter storm Cara) passed slowly through the area during this time frame.  
Instruments at the SGP may have been affected by ice accumulation.

• wdir_vec_std
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Temperature mean(temp_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Wind direction vector mean(wdir_vec_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Wind speed vector mean(wspd_vec_mean)
• tbrg_precip_total
• Atmospheric pressure(atmos_pressure)
• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• wdir_vec_std
• Wind direction vector mean(wdir_vec_mean)
• Temperature mean(temp_mean)
• Atmospheric pressure(atmos_pressure)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)

• wdir_vec_std
• Wind direction vector mean(wdir_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Temperature mean(temp_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Wind speed vector mean(wspd_vec_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• tbrg_precip_total
• Atmospheric pressure(atmos_pressure)

• Wind speed vector mean(wspd_vec_mean)
• Wind direction vector mean(wdir_vec_mean)
• Atmospheric pressure(atmos_pressure)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• wdir_vec_std
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Temperature mean(temp_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

• Temperature mean(temp_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Wind speed vector mean(wspd_vec_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Atmospheric pressure(atmos_pressure)
• Wind direction vector mean(wdir_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• tbrg_precip_total
• wdir_vec_std

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Wind direction vector mean(wdir_vec_mean)
• Temperature mean(temp_mean)
• tbrg_precip_total
• wdir_vec_std
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Atmospheric pressure(atmos_pressure)
• Wind speed vector mean(wspd_vec_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)

• Vapor pressure mean, calculated(vapor_pressure_mean)
• wdir_vec_std
• Atmospheric pressure(atmos_pressure)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Temperature mean(temp_mean)
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• tbrg_precip_total

• Temperature mean(temp_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Atmospheric pressure(atmos_pressure)
• tbrg_precip_total
• Wind direction vector mean(wdir_vec_mean)
• wdir_vec_std
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Wind speed vector mean(wspd_vec_mean)

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Wind speed vector mean(wspd_vec_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Wind direction vector mean(wdir_vec_mean)
• Temperature mean(temp_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• tbrg_precip_total
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Atmospheric pressure(atmos_pressure)
• wdir_vec_std

• Vapor pressure mean, calculated(vapor_pressure_mean)
• Wind speed vector mean(wspd_vec_mean)
• Wind direction vector mean(wdir_vec_mean)
• tbrg_precip_total
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Atmospheric pressure(atmos_pressure)
• wdir_vec_std
• Temperature mean(temp_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind direction vector mean(wdir_vec_mean)
• wdir_vec_std
• tbrg_precip_total
• Temperature mean(temp_mean)
• Wind speed vector mean(wspd_vec_mean)
• Atmospheric pressure(atmos_pressure)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)

• PWD 10 minute mean visibility(pwd_mean_vis_10min)
• pwd_cumul_rain
• Temperature mean(temp_mean)
• PWD 1 minute mean visibility(pwd_mean_vis_1min)
• temp_std
• pwd_pw_code_15min
• Wind direction vector mean(wdir_vec_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• vapor_pressure_std
• pwd_cumul_snow
• tbrg_precip_total
• Atmospheric pressure(atmos_pressure)
• rh_std
• logger_volt
• PWD 1 minute mean precipitation rate(pwd_precip_rate_mean_1min)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• logger_temp
• pwd_pw_code_1hr
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• pwd_err_code
• pwd_pw_code_inst
• wdir_vec_std

• Wind direction vector mean(wdir_vec_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Temperature mean(temp_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• tbrg_precip_total
• Atmospheric pressure(atmos_pressure)
• Wind speed vector mean(wspd_vec_mean)
• wdir_vec_std
• Vapor pressure mean, calculated(vapor_pressure_mean)

SGP/MET/E32 - Abnormal Drop in Data

For unknown reasons, the temperature and vapor pressure abnormally dip down when compared 
to the co-located EBBR.

• Temperature mean(temp_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)

SGP/MET/E40 - Suspect RH and vapor pressure values due to sensor failure

A sensor failure caused suspect relative humidity and vapor pressure values during this 
time. Data are often above maximum threshold.

• vapor_pressure_std
• Vapor pressure mean, calculated(vapor_pressure_mean)
• rh_std
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)

SGP /E39/E40 - Icing Event

An icing event (winter storm Cara) passed slowly through the area during this
time frame.  Instruments at the SGP may have been affected by ice accumulation.

• Atmospheric pressure(atmos_pressure)
• rh_std
• tbrg_precip_total
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Wind direction vector mean(wdir_vec_mean)
• vapor_pressure_std
• Temperature mean(temp_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• temp_std
• logger_volt
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• logger_temp

• logger_temp
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• rh_std
• logger_volt
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• tbrg_precip_total
• vapor_pressure_std
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)
• Wind direction vector mean(wdir_vec_mean)
• Temperature mean(temp_mean)
• Atmospheric pressure(atmos_pressure)
• temp_std
• Wind speed, lower, 1-min avg(wspd_arith_mean)

SGP/MET/E13 - Data suspect due to system power issues

Issues with power supply to the system caused outages and suspect data during this time.

• PWD 1 minute mean visibility(pwd_mean_vis_1min)
• PWD 10 minute mean visibility(pwd_mean_vis_10min)
• pwd_cumul_rain
• Vapor pressure mean, calculated(vapor_pressure_mean)
• logger_temp
• temp_std
• vapor_pressure_std
• PWD 1 minute mean precipitation rate(pwd_precip_rate_mean_1min)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• pwd_pw_code_15min
• tbrg_precip_total
• pwd_pw_code_1hr
• pwd_pw_code_inst
• Atmospheric pressure(atmos_pressure)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Temperature mean(temp_mean)
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)
• pwd_cumul_snow
• Wind direction vector mean(wdir_vec_mean)
• rh_std
• logger_volt
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• pwd_err_code

SGP/MET/E38 - Data lost or incorrect due to bad data logger

Data are mostly missing during this period due to a hardware failure. Any data that are 
available during this period should be considered suspect.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Wind direction vector mean(wdir_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)
• tbrg_precip_total
• wdir_vec_std
• Atmospheric pressure(atmos_pressure)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Temperature mean(temp_mean)

SGP Site Power Outage Due to Winter Storm

On Saturday and Sunday, December 26 and 27th a powerful winter storm (Goliath) brought 
sleet and freezing rain to much of Oklahoma with wind gusts of 45 MPH at times. The result 
was very very slick roads and mass power outages.
 
The SGP central facility lost power at 8:55 PM CDT on Sunday, December 27th.  
The power was restored on 7:56 PM CDT on Wednesday, December 30th
 
Site Emergency procedures were activated and Technicians drained water out of instrument 
reservoirs and other measures as needed, early Monday morning.
 
On Wednesdays as roads and power started was restored to much of the areas east of I-35 , 
Site Technicians performed maintenance on several Extended Facilities.

During this period, data are potentially missing, incorrect, or suspect.  Carefully 
inspect the data before use.

• qc_wspd_vec_mean
• qc_rh_mean
• Wind speed vector mean(wspd_vec_mean)
• tbrg_precip_total
• qc_atmos_pressure
• wdir_vec_std
• qc_temp_mean
• base_time
• qc_wspd_arith_mean
• qc_tbrg_precip_total
• North latitude(lat)
• Altitude above mean sea level(alt)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Temperature mean(temp_mean)
• Wind direction vector mean(wdir_vec_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_wdir_vec_std
• qc_time
• Atmospheric pressure(atmos_pressure)
• qc_wdir_vec_mean
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• time_offset
• East longitude(lon)
• time
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_vapor_pressure_mean
• qc_tbrg_precip_total_corr

• time_offset
• qc_rh_mean
• qc_logger_temp
• Wind direction vector mean(wdir_vec_mean)
• vapor_pressure_std
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• qc_tbrg_precip_total
• qc_wdir_vec_mean
• qc_vapor_pressure_mean
• qc_temp_mean
• North latitude(lat)
• qc_atmos_pressure
• qc_logger_volt
• time
• Altitude above mean sea level(alt)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• temp_std
• tbrg_precip_total
• qc_wspd_arith_mean
• logger_volt
• qc_wspd_vec_mean
• Wind speed vector mean(wspd_vec_mean)
• East longitude(lon)
• wdir_vec_std
• logger_temp
• Atmospheric pressure(atmos_pressure)
• rh_std
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_tbrg_precip_total_corr
• base_time
• Temperature mean(temp_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)

• time
• qc_wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)
• wdir_vec_std
• qc_wspd_arith_mean
• North latitude(lat)
• Temperature mean(temp_mean)
• qc_temp_mean
• Atmospheric pressure(atmos_pressure)
• tbrg_precip_total
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_wdir_vec_mean
• qc_tbrg_precip_total_corr
• qc_wspd_vec_mean
• Altitude above mean sea level(alt)
• base_time
• Wind direction vector mean(wdir_vec_mean)
• qc_time
• qc_tbrg_precip_total
• qc_atmos_pressure
• qc_rh_mean
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• East longitude(lon)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• time_offset
• qc_vapor_pressure_mean

• qc_wdir_vec_mean
• time_offset
• qc_tbrg_precip_total
• Atmospheric pressure(atmos_pressure)
• qc_vapor_pressure_mean
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• qc_wspd_arith_mean
• North latitude(lat)
• Temperature mean(temp_mean)
• wdir_vec_std
• qc_wspd_vec_mean
• Wind direction vector mean(wdir_vec_mean)
• qc_temp_mean
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• qc_wdir_vec_std
• base_time
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_atmos_pressure
• qc_rh_mean
• Wind speed vector mean(wspd_vec_mean)
• tbrg_precip_total
• qc_tbrg_precip_total_corr
• qc_time
• Altitude above mean sea level(alt)
• time
• East longitude(lon)
• Vapor pressure mean, calculated(vapor_pressure_mean)

• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_wdir_vec_std
• qc_rh_mean
• qc_tbrg_precip_total
• Altitude above mean sea level(alt)
• base_time
• qc_vapor_pressure_mean
• time_offset
• tbrg_precip_total
• wdir_vec_std
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• qc_time
• qc_wspd_arith_mean
• Atmospheric pressure(atmos_pressure)
• qc_wspd_vec_mean
• time
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• East longitude(lon)
• qc_atmos_pressure
• qc_wdir_vec_mean
• North latitude(lat)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Wind direction vector mean(wdir_vec_mean)
• Temperature mean(temp_mean)
• Wind speed vector mean(wspd_vec_mean)
• qc_temp_mean
• qc_tbrg_precip_total_corr

• time_offset
• qc_wdir_vec_mean
• North latitude(lat)
• Atmospheric pressure(atmos_pressure)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• Altitude above mean sea level(alt)
• Wind speed vector mean(wspd_vec_mean)
• qc_tbrg_precip_total
• base_time
• qc_time
• qc_wspd_arith_mean
• Temperature mean(temp_mean)
• qc_tbrg_precip_total_corr
• qc_wdir_vec_std
• time
• Vapor pressure mean, calculated(vapor_pressure_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Wind direction vector mean(wdir_vec_mean)
• East longitude(lon)
• qc_rh_mean
• qc_vapor_pressure_mean
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_atmos_pressure
• qc_temp_mean
• tbrg_precip_total
• qc_wspd_vec_mean

• wdir_vec_std
• Atmospheric pressure(atmos_pressure)
• qc_tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• qc_wdir_vec_mean
• qc_wspd_vec_mean
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• North latitude(lat)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_wspd_arith_mean
• Altitude above mean sea level(alt)
• qc_tbrg_precip_total_corr
• qc_rh_mean
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Wind speed vector mean(wspd_vec_mean)
• qc_atmos_pressure
• base_time
• qc_vapor_pressure_mean
• East longitude(lon)
• time_offset
• Temperature mean(temp_mean)
• Wind direction vector mean(wdir_vec_mean)
• qc_wdir_vec_std
• qc_temp_mean
• time
• qc_time
• tbrg_precip_total

• qc_vapor_pressure_mean
• qc_tbrg_precip_total
• wdir_vec_std
• time_offset
• qc_wspd_vec_mean
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• time
• Wind speed vector mean(wspd_vec_mean)
• Temperature mean(temp_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Wind direction vector mean(wdir_vec_mean)
• qc_tbrg_precip_total_corr
• qc_rh_mean
• Vapor pressure mean, calculated(vapor_pressure_mean)
• North latitude(lat)
• qc_temp_mean
• qc_wdir_vec_std
• qc_wspd_arith_mean
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• tbrg_precip_total
• qc_atmos_pressure
• base_time
• Altitude above mean sea level(alt)
• qc_time
• Atmospheric pressure(atmos_pressure)
• East longitude(lon)
• qc_wdir_vec_mean

• qc_tbrg_precip_total
• qc_wdir_vec_std
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_vapor_pressure_mean
• qc_time
• qc_wdir_vec_mean
• Atmospheric pressure(atmos_pressure)
• Altitude above mean sea level(alt)
• wdir_vec_std
• East longitude(lon)
• Wind speed vector mean(wspd_vec_mean)
• qc_tbrg_precip_total_corr
• qc_wspd_vec_mean
• base_time
• time_offset
• Wind direction vector mean(wdir_vec_mean)
• qc_atmos_pressure
• tbrg_precip_total
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_temp_mean
• time
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• qc_wspd_arith_mean
• Temperature mean(temp_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• North latitude(lat)
• qc_rh_mean

• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• North latitude(lat)
• time
• qc_wspd_arith_mean
• qc_tbrg_precip_total_corr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• base_time
• qc_wdir_vec_std
• Atmospheric pressure(atmos_pressure)
• wdir_vec_std
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_wdir_vec_mean
• time_offset
• qc_time
• East longitude(lon)
• Wind direction vector mean(wdir_vec_mean)
• qc_vapor_pressure_mean
• qc_tbrg_precip_total
• qc_temp_mean
• Altitude above mean sea level(alt)
• Wind speed vector mean(wspd_vec_mean)
• tbrg_precip_total
• qc_atmos_pressure
• Temperature mean(temp_mean)
• qc_wspd_vec_mean
• qc_rh_mean
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

• qc_vapor_pressure_mean
• qc_wdir_vec_mean
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• qc_temp_mean
• wdir_vec_std
• qc_tbrg_precip_total_corr
• qc_rh_mean
• Temperature mean(temp_mean)
• base_time
• qc_wspd_arith_mean
• Wind speed vector mean(wspd_vec_mean)
• East longitude(lon)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• qc_wspd_vec_mean
• time_offset
• qc_wdir_vec_std
• Wind direction vector mean(wdir_vec_mean)
• qc_atmos_pressure
• time
• qc_time
• qc_tbrg_precip_total
• North latitude(lat)
• Atmospheric pressure(atmos_pressure)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• tbrg_precip_total
• Altitude above mean sea level(alt)
• Vapor pressure mean, calculated(vapor_pressure_mean)

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

• Wind direction vector mean(wdir_vec_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_time
• North latitude(lat)
• tbrg_precip_total
• Atmospheric pressure(atmos_pressure)
• Altitude above mean sea level(alt)
• base_time
• qc_tbrg_precip_total
• qc_atmos_pressure
• qc_wspd_arith_mean
• time
• qc_wdir_vec_std
• Temperature mean(temp_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_rh_mean
• qc_temp_mean
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• qc_wspd_vec_mean
• qc_vapor_pressure_mean
• Wind speed vector mean(wspd_vec_mean)
• East longitude(lon)
• qc_wdir_vec_mean
• time_offset
• qc_tbrg_precip_total_corr

• qc_tbrg_precip_total
• qc_vapor_pressure_mean
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• logger_temp
• qc_wspd_arith_mean
• qc_tbrg_precip_total_corr
• Wind direction vector mean(wdir_vec_mean)
• base_time
• East longitude(lon)
• qc_rh_mean
• qc_logger_temp
• Temperature mean(temp_mean)
• Altitude above mean sea level(alt)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• rh_std
• qc_atmos_pressure
• tbrg_precip_total
• Wind speed vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• qc_logger_volt
• qc_temp_mean
• qc_wspd_vec_mean
• qc_wdir_vec_mean
• Vapor pressure mean, calculated(vapor_pressure_mean)
• time
• temp_std
• logger_volt
• vapor_pressure_std
• Atmospheric pressure(atmos_pressure)
• North latitude(lat)
• time_offset
• wdir_vec_std

SGP/IRT/MET/MFRSR/SIRS/SWATS/E32 - Power out for an extended period after a winter storm

• wdir_vec_std
• Wind direction vector mean(wdir_vec_mean)
• qc_wspd_vec_mean
• qc_time
• tbrg_precip_total
• qc_vapor_pressure_mean
• Atmospheric pressure(atmos_pressure)
• qc_tbrg_precip_total_corr
• qc_temp_mean
• qc_atmos_pressure
• qc_wspd_arith_mean
• North latitude(lat)
• Temperature mean(temp_mean)
• time_offset
• qc_rh_mean
• qc_wdir_vec_mean
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Wind speed vector mean(wspd_vec_mean)
• qc_wdir_vec_std
• base_time
• East longitude(lon)
• Altitude above mean sea level(alt)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• time
• qc_tbrg_precip_total
• Vapor pressure mean, calculated(vapor_pressure_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E11 - Missing Data

The site computer went down following an ice storm that caused a power outage.  The met 
data was missing for an extended period.

• qc_wdir_vec_std
• qc_wspd_arith_mean
• Wind direction vector mean(wdir_vec_mean)
• time
• North latitude(lat)
• qc_vapor_pressure_mean
• Atmospheric pressure(atmos_pressure)
• Wind speed vector mean(wspd_vec_mean)
• qc_temp_mean
• qc_wdir_vec_mean
• wdir_vec_std
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Altitude above mean sea level(alt)
• time_offset
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• tbrg_precip_total
• qc_atmos_pressure
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_tbrg_precip_total_corr
• qc_rh_mean
• qc_time
• East longitude(lon)
• qc_tbrg_precip_total
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Temperature mean(temp_mean)
• base_time
• qc_wspd_vec_mean

SGP/MET/E35 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E36 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E37 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E38 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E39 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E40 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E9 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E11 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E13 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E15 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E31 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E32 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E33 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E34 - False tips in high winds

The TBRG's were mounted at a height that made them prone to vibrations caused by high 
winds which may have caused false tips.  The end date of this DQR indicates when the rain 
gauge was lowered to mitigate these effects.  

Effects on the total precipitation amounts are assumed to be negligible.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E39 - Data logger failure

Data are missing during this time due to a failed data logger.

• logger_temp
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• qc_vapor_pressure_mean
• rh_std
• qc_atmos_pressure
• qc_wspd_arith_mean
• logger_volt
• qc_wdir_vec_mean
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_logger_volt
• tbrg_precip_total
• base_time
• qc_tbrg_precip_total_corr
• vapor_pressure_std
• time
• East longitude(lon)
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)
• qc_temp_mean
• North latitude(lat)
• qc_rh_mean
• Wind direction vector mean(wdir_vec_mean)
• qc_logger_temp
• Temperature mean(temp_mean)
• qc_tbrg_precip_total
• Altitude above mean sea level(alt)
• Atmospheric pressure(atmos_pressure)
• qc_wspd_vec_mean
• temp_std
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• time_offset

SGP/MET/E33 - Power failure

All data are missing during this time due to a power and battery failure.

• rh_std
• vapor_pressure_std
• qc_wspd_vec_mean
• qc_tbrg_precip_total
• qc_time
• time
• qc_tbrg_precip_total_corr
• qc_vapor_pressure_mean
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• qc_wspd_arith_mean
• Atmospheric pressure(atmos_pressure)
• time_offset
• qc_logger_volt
• Wind direction vector mean(wdir_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• East longitude(lon)
• Wind speed vector mean(wspd_vec_mean)
• base_time
• qc_temp_mean
• tbrg_precip_total
• qc_logger_temp
• Altitude above mean sea level(alt)
• qc_wdir_vec_mean
• qc_wdir_vec_std
• North latitude(lat)
• Temperature mean(temp_mean)
• logger_temp
• wdir_vec_std
• logger_volt
• qc_atmos_pressure
• qc_rh_mean
• temp_std

SGP/MET/E37 - Data missing due to power interruption.

Power interruption due to site maintenance caused missing data during this time. The 
battery backup appears to have failed.

• Atmospheric pressure(atmos_pressure)
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_wspd_vec_mean
• qc_rh_mean
• rh_std
• Temperature mean(temp_mean)
• vapor_pressure_std
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• base_time
• qc_logger_temp
• logger_volt
• logger_temp
• qc_tbrg_precip_total
• qc_atmos_pressure
• tbrg_precip_total
• time_offset
• qc_wdir_vec_std
• qc_wdir_vec_mean
• qc_logger_volt
• qc_temp_mean
• wdir_vec_std
• qc_vapor_pressure_mean
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• qc_time
• time
• East longitude(lon)
• qc_wspd_arith_mean
• temp_std
• North latitude(lat)
• Altitude above mean sea level(alt)
• qc_tbrg_precip_total_corr
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E9 - Wind sensor malfunction

Loose wire contacts and possible bad bearings caused intermittent wind data dropouts 
during this time.

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

SGP/MET/E32 - Power outage

A power outage at the site caused missing data during this time period.

• wdir_vec_std
• vapor_pressure_std
• Wind direction vector mean(wdir_vec_mean)
• logger_volt
• qc_wspd_vec_mean
• rh_std
• qc_time
• temp_std
• tbrg_precip_total
• Atmospheric pressure(atmos_pressure)
• qc_vapor_pressure_mean
• logger_temp
• qc_tbrg_precip_total_corr
• qc_temp_mean
• qc_atmos_pressure
• qc_wspd_arith_mean
• qc_logger_temp
• North latitude(lat)
• time_offset
• Temperature mean(temp_mean)
• qc_rh_mean
• qc_wdir_vec_mean
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Wind speed vector mean(wspd_vec_mean)
• qc_wdir_vec_std
• base_time
• East longitude(lon)
• Altitude above mean sea level(alt)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• time
• qc_tbrg_precip_total
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_logger_volt
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E38 - Incorrect Data

Data are incorrect for an unknown reason during this short time frame.

• logger_volt
• rh_std
• temp_std
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• logger_temp
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Temperature mean(temp_mean)
• vapor_pressure_std

SGP/MET/E34 - Probable thunderstorm interference

Data from the temperature and relative humidity sensor is incorrect during this time. A 
strong thunderstorm passed through the area and likely caused interference.

• Vapor pressure mean, calculated(vapor_pressure_mean)
• temp_std
• vapor_pressure_std
• rh_std
• Temperature mean(temp_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)

SGP/MET/E33 - Missing data

For an unknown reason, data is missing during this time.

• rh_std
• vapor_pressure_std
• qc_wspd_vec_mean
• qc_tbrg_precip_total
• qc_time
• time
• qc_tbrg_precip_total_corr
• qc_vapor_pressure_mean
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• qc_wspd_arith_mean
• Atmospheric pressure(atmos_pressure)
• time_offset
• qc_logger_volt
• Wind direction vector mean(wdir_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• East longitude(lon)
• Wind speed vector mean(wspd_vec_mean)
• base_time
• qc_temp_mean
• tbrg_precip_total
• qc_logger_temp
• Altitude above mean sea level(alt)
• qc_wdir_vec_mean
• qc_wdir_vec_std
• North latitude(lat)
• Temperature mean(temp_mean)
• logger_temp
• wdir_vec_std
• logger_volt
• qc_atmos_pressure
• qc_rh_mean
• temp_std

SGP/MET/E40 - Reprocessed and Corrected: Communications failure

DATA REPROCESSED and CORRECTED: 


A communications and data storage failure resulted in missing data. Data between 5/12 and 
5/24 are permanently missing. Data from 5/24 to 6/9 will be available after reprocessing.

The data were archived October 2016. Please retrieve the reprocessed data for use in your 
analysis. 


ORIGINAL DQR CATEGORY: Black( Missing)

REPROCESSED and CORRECTED DATA ARCHIVED:2016-10

REPROCESS IDENTIFICATION NUMBER: RID 1475

---------------------------------------------------
--- ORIGINAL DQR DESCRIPTION ---
---------------------------------------------------

A communications and data storage failure resulted in missing data. Data between 5/12 and 
5/24 are permanently missing. Data from 5/24 to 6/9 will be available after reprocessing.

• qc_vapor_pressure_mean
• East longitude(lon)
• Atmospheric pressure(atmos_pressure)
• qc_logger_temp
• qc_wspd_vec_mean
• rh_std
• tbrg_precip_total
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_atmos_pressure
• Wind direction vector mean(wdir_vec_mean)
• Altitude above mean sea level(alt)
• vapor_pressure_std
• Temperature mean(temp_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_tbrg_precip_total_corr
• base_time
• qc_wspd_arith_mean
• qc_temp_mean
• temp_std
• qc_logger_volt
• logger_volt
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• qc_rh_mean
• qc_tbrg_precip_total
• qc_wdir_vec_mean
• time
• Wind speed vector mean(wspd_vec_mean)
• North latitude(lat)
• time_offset
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• logger_temp

SGP/MET/E15 - Tipping bucket rain gauge clogged

During maintenance rounds, debris was found clogging the rain gauge funnel.

• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E37 - Tipping bucket rain gauge clogged

Debris was found obstructing the rain gauge funnel. Precipitation data are incorrect 
during this time.

• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E40 - Tipping bucket rain gauge clogged

Debris was found obstructing the rain gauge funnel. Precipitation data are incorrect 
during this time.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E11 - Tipping bucket rain gauge clogged

Debris was found obstructing the rain gauge funnel. Precipitation data are incorrect 
during this time.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E33 - Tipping bucket rain gauge clogged.

During maintenance rounds, debris was found clogging the rain gauge funnel.

• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E15 - No precipitation recorded

For an unknown reason, the tipping bucket rain gauge did not record precipitation events.

• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E41 - Debris and build-up in tipping bucket rain gauge

Debris and dirt build-up in the tipping bucket rain gauge caused missed and under-reported 
precipitation events during this time.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E37 - Hardware failure due to lightning strike

A lightning strike caused data to be missing or incorrect during this time.

• Atmospheric pressure(atmos_pressure)
• tbrg_precip_total
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• wdir_vec_std
• rh_std
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Temperature mean(temp_mean)
• vapor_pressure_std
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• temp_std
• logger_temp
• logger_volt
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E32 - Missing data

Data are missing for an unknown reason.

• wdir_vec_std
• vapor_pressure_std
• Wind direction vector mean(wdir_vec_mean)
• logger_volt
• qc_wspd_vec_mean
• rh_std
• qc_time
• temp_std
• tbrg_precip_total
• Atmospheric pressure(atmos_pressure)
• qc_vapor_pressure_mean
• logger_temp
• qc_tbrg_precip_total_corr
• qc_temp_mean
• qc_atmos_pressure
• qc_wspd_arith_mean
• qc_logger_temp
• North latitude(lat)
• time_offset
• Temperature mean(temp_mean)
• qc_rh_mean
• qc_wdir_vec_mean
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Wind speed vector mean(wspd_vec_mean)
• qc_wdir_vec_std
• base_time
• East longitude(lon)
• Altitude above mean sea level(alt)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• time
• qc_tbrg_precip_total
• Vapor pressure mean, calculated(vapor_pressure_mean)
• qc_logger_volt
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E33 - Missing data

Data are missing for an unknown reason.

• rh_std
• vapor_pressure_std
• qc_wspd_vec_mean
• qc_tbrg_precip_total
• qc_time
• time
• qc_tbrg_precip_total_corr
• qc_vapor_pressure_mean
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• qc_wspd_arith_mean
• Atmospheric pressure(atmos_pressure)
• time_offset
• qc_logger_volt
• Wind direction vector mean(wdir_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• East longitude(lon)
• Wind speed vector mean(wspd_vec_mean)
• base_time
• qc_temp_mean
• tbrg_precip_total
• qc_logger_temp
• Altitude above mean sea level(alt)
• qc_wdir_vec_mean
• qc_wdir_vec_std
• North latitude(lat)
• Temperature mean(temp_mean)
• logger_temp
• wdir_vec_std
• logger_volt
• qc_atmos_pressure
• qc_rh_mean
• temp_std

SGP/MET/E11 - Missing data

Data are missing for an unknown reason.

• qc_wdir_vec_std
• qc_wspd_arith_mean
• Wind direction vector mean(wdir_vec_mean)
• qc_logger_volt
• time
• North latitude(lat)
• qc_vapor_pressure_mean
• Atmospheric pressure(atmos_pressure)
• Wind speed vector mean(wspd_vec_mean)
• rh_std
• qc_temp_mean
• qc_wdir_vec_mean
• wdir_vec_std
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• Altitude above mean sea level(alt)
• time_offset
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• logger_volt
• tbrg_precip_total
• qc_atmos_pressure
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• qc_logger_temp
• qc_tbrg_precip_total_corr
• qc_rh_mean
• qc_time
• East longitude(lon)
• qc_tbrg_precip_total
• Temperature mean(temp_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• temp_std
• base_time
• logger_temp
• qc_wspd_vec_mean
• vapor_pressure_std

SGP/MET/E9 - Bad battery

A faulty battery caused periodic missing data.

• qc_temp_mean
• Wind speed vector mean(wspd_vec_mean)
• Wind direction vector mean(wdir_vec_mean)
• Atmospheric pressure(atmos_pressure)
• qc_tbrg_precip_total
• qc_vapor_pressure_mean
• qc_tbrg_precip_total_corr
• Temperature mean(temp_mean)
• temp_std
• qc_logger_volt
• tbrg_precip_total
• time_offset
• qc_time
• East longitude(lon)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Altitude above mean sea level(alt)
• qc_wdir_vec_mean
• qc_wdir_vec_std
• qc_wspd_vec_mean
• qc_rh_mean
• time
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• North latitude(lat)
• qc_logger_temp
• vapor_pressure_std
• logger_temp
• logger_volt
• rh_std
• wdir_vec_std
• Vapor pressure mean, calculated(vapor_pressure_mean)
• base_time
• qc_wspd_arith_mean
• qc_atmos_pressure

SGP/MET/E37 - Instrument failure due to lightning strike

A lightning strike caused a failure of the temperature and humidity probe.

• Temperature mean(temp_mean)
• vapor_pressure_std
• Vapor pressure mean, calculated(vapor_pressure_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• temp_std
• rh_std

SGP/MET/E37 - Instrument wiring incorrect

The instrument was not wired correctly following maintenance. Data are incorrect during 
this time.

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

SGP/MET/E32 - Tipping bucket rain gauge clogged

Debris was found blocking the rain gauge funnel.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E34 - Data missing

For an unknown reason, data are missing during this time.

• qc_wdir_vec_std
• time
• Wind direction vector mean(wdir_vec_mean)
• rh_std
• qc_vapor_pressure_mean
• time_offset
• qc_tbrg_precip_total
• qc_rh_mean
• temp_std
• wdir_vec_std
• base_time
• qc_temp_mean
• North latitude(lat)
• qc_wdir_vec_mean
• Wind speed vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• qc_time
• logger_temp
• qc_tbrg_precip_total_corr
• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• logger_volt
• qc_logger_temp
• qc_logger_volt
• East longitude(lon)
• qc_wspd_arith_mean
• Temperature mean(temp_mean)
• Humidity, relative, at 2-m height, 1-min avg(rh_mean)
• Vapor pressure mean, calculated(vapor_pressure_mean)
• vapor_pressure_std
• Altitude above mean sea level(alt)
• tbrg_precip_total
• Atmospheric pressure(atmos_pressure)
• qc_wspd_vec_mean
• qc_atmos_pressure

SGP/MET/E31 - Tipping bucket rain gauge clogged

Debris was found blocking the rain gauge funnel.

• TBRG precipitation total, corrected(tbrg_precip_total_corr)
• tbrg_precip_total

SGP/MET/E35 - Tipping bucket rain gauge flatlined

For an unknown reason, the tipping bucket rain gauge was not recording precipitation 
during this time.

• tbrg_precip_total
• TBRG precipitation total, corrected(tbrg_precip_total_corr)

SGP/MET/E3 - Unusual relative humidity data

Relative humidity data were intermittently noisy and dropped to unusually low values at 
times. The sensor was replaced.

• Humidity, relative, at 2-m height, 1-min avg(rh_mean)

SGP/MET/E13 - Data Spikes

MET went down during some storms and produced some erroneous errors when brought back 
online.

• Temperature mean(temp_mean)
• temp_std

SGP/MET/E13 - Wind Values Incorrect

Wind speed is incorrect after coming back online

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