SGP/SMOS/E3 - Questionable RH data at E3 on 22 JUN 2000

The RH data from E3 SMOS on 22 JUN 2000 between 0530 and 0700 is questionable.

• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Relative Humidity(max_rh)
• Maximum Vapor Pressure(max_vap_pres)
• Minimum Relative Humidity(min_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Maximum Relative Humidity(time_max_rh)

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

• Standard Deviation of Relative Humidity(sd_rh)
• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)

SGP/SMOS/E3 - E3 SMOS WIND SPEED DATA INCORRECT

Wind speed data incorrect due to ice accumulation.

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Standard Deviation of Wind Speed(sd_wspd)

SGP/SMOS/E3 - E3 DATA VALUES MISSING

All data values missing due to SDS modem failure.

• Time of Minimum Wind Speed(time_min_wspd)
• Maximum Vapor Pressure(max_vap_pres)
• maximum wind speed (gusts)(max_wspd)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Maximum Relative Humidity(max_rh)
• Maximum Barometric Pressure(max_bar_pres)
• Maximum Temperature(max_temp)
• Minimum Barometric Pressure(min_bar_pres)
• Minimum Temperature(min_temp)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Maximum Snow Depth(time_max_snow)
• Minimum of Wind speed(min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• Minimum Relative Humidity(min_rh)
• Time of Maximum Temperature(time_max_temp)
• Time of Minimum Snow Depth(time_min_snow)
• Minimum Snow Depth(min_snow_depth)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Maximum Snow Depth(max_snow)
• Time of Minimum Temperature(time_min_temp)

• Relative humidity inside the instrument enclosure(rh)
• barometric pressure(bar_pres)
• Standard Deviation of wind direction(sd_deg)
• Unit Vector Wind Direction(wdir)
• Hourly precipitation(precip)
• Beam 0 Temperature(temp)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Vapor Pressure (kiloPascals)(vap_pres)

• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Wind Speed(sd_wspd)
• Hourly precipitation(precip)
• Standard Deviation of wind direction(sd_deg)
• Wind Speed (vector averaged)(wspd_va)
• Snow Depth(snow)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Standard Deviation of Air Temperature(sd_temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)
• barometric pressure(bar_pres)
• Snow Depth Sensor(snow_sen)
• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)

SGP/SMOS/E3 - E3 SMOS SNOW DEPTH DATA INCORRECT

Data incorrect due to new program reading sensor input when no sensor installed.  Values 
read around 1539 mm.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Maximum Snow Depth(time_max_snow)
• Maximum Snow Depth(max_snow)
• Time of Minimum Snow Depth(time_min_snow)
• Minimum Snow Depth(min_snow_depth)

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E3 - E3 SNOW DEPTH DATA QUESTIONABLE

Snow depth sensor intermittently reporting values outside the manufacturers tolerance of 
+/- 25mm.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Maximum Snow Depth(time_max_snow)
• Maximum Snow Depth(max_snow)
• Time of Minimum Snow Depth(time_min_snow)
• Minimum Snow Depth(min_snow_depth)

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E3 - E3 SNOW DEPTH DATA VALUES INCORRECT

Snow depth readings are outside the manufacturer's tolerance of +/- 25mm.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Maximum Snow Depth(time_max_snow)
• Maximum Snow Depth(max_snow)
• Time of Minimum Snow Depth(time_min_snow)
• Minimum Snow Depth(min_snow_depth)

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E3 - E3 SNOW DEPTH READINGS QUESTIONABLE

Snow depth readings reporting intermittently as: -9999, outside the manufacturer's 
tolerance of +/- 25mm, and beleivable values.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Maximum Snow Depth(time_max_snow)
• Maximum Snow Depth(max_snow)
• Time of Minimum Snow Depth(time_min_snow)
• Minimum Snow Depth(min_snow_depth)

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E3 - E3 SMOS SNOW DATA INCORRECT

Due to a programming error all snow depth data were reported as 0.  In effect, no snow 
depth data were collected.

• Maximum Snow Depth(max_snow)
• Minimum Snow Depth(min_snow_depth)
• Time of Minimum Snow Depth(time_min_snow)
• Time of Maximum Snow Depth(time_max_snow)

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E3 - E3 SMOS SNOW DATA INCORRECT

Due to a programming error all snow depth data were reported as 0.  In effect, no snow 
depth data were collected.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Maximum Snow Depth(time_max_snow)
• Maximum Snow Depth(max_snow)
• Time of Minimum Snow Depth(time_min_snow)
• Minimum Snow Depth(min_snow_depth)

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E3 - E3 SMOS WIND SPEED DATA INCORRECT

Due to an ice storm and subsequent accumulation of ice on the wind speed sensor, the wind 
speed values are artificially low.

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Standard Deviation of Wind Speed(sd_wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Standard Deviation of Wind Speed(sd_wspd)

SGP/SMOS/E3 - E3 SMOS 30 MINUTE DATA VALUES SUSPECT

The 30-min data values are suspect due to lowering of tower for routine maintenance.  The 
1-minute data values @ 17:26 were affected.

• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Beam 0 Temperature(temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• barometric pressure(bar_pres)
• Snow Depth(snow)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Standard Deviation of Wind Speed(sd_wspd)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)
• Relative humidity inside the instrument enclosure(rh)
• Snow Depth Sensor(snow_sen)
• Hourly precipitation(precip)
• Standard Deviation of wind direction(sd_deg)

• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Relative Humidity(sd_rh)
• Vapor Pressure (kiloPascals)(vap_pres)
• Mean Wind Speed(wspd)
• Hourly precipitation(precip)
• Standard Deviation of Wind Speed(sd_wspd)
• Unit Vector Wind Direction(wdir)
• barometric pressure(bar_pres)
• Standard Deviation of wind direction(sd_deg)
• Snow Depth Sensor(snow_sen)
• Beam 0 Temperature(temp)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Snow Depth(snow)

SGP/SMOS/E3 - E3 SMOS DATA VALUES INCORRECT

All data values incorrect due to tower being lowered in order to clean the radiometer 
domes.

• Beam 0 Temperature(temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• barometric pressure(bar_pres)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)
• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Snow Depth(snow)
• Standard Deviation of Wind Speed(sd_wspd)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Relative humidity inside the instrument enclosure(rh)
• Snow Depth Sensor(snow_sen)
• Hourly precipitation(precip)

• Mean Wind Speed(wspd)
• Hourly precipitation(precip)
• barometric pressure(bar_pres)
• Standard Deviation of wind direction(sd_deg)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)
• Relative humidity inside the instrument enclosure(rh)
• Beam 0 Temperature(temp)

• Hourly precipitation(precip)
• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)
• Unit Vector Wind Direction(wdir)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of wind direction(sd_deg)
• barometric pressure(bar_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Mean Wind Speed(wspd)

• Standard Deviation of Relative Humidity(sd_rh)
• Hourly precipitation(precip)
• Standard Deviation of Wind Speed(sd_wspd)
• Standard Deviation of wind direction(sd_deg)
• Wind Speed (vector averaged)(wspd_va)
• Snow Depth(snow)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Standard Deviation of Air Temperature(sd_temp)
• Mean Wind Speed(wspd)
• Vapor Pressure (kiloPascals)(vap_pres)
• Unit Vector Wind Direction(wdir)
• barometric pressure(bar_pres)
• Snow Depth Sensor(snow_sen)
• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)

SGP/SMOS/E3 - SNOW DEPTH SENSOR DATA QUESTIONABLE

Snow depth data was reported intermittently as -9999, outside of manufacturer's tolerance, 
and good.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Maximum Snow Depth(time_max_snow)
• Maximum Snow Depth(max_snow)
• Time of Minimum Snow Depth(time_min_snow)
• Minimum Snow Depth(min_snow_depth)

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E3 - SNOW DEPTH DATA INCORRECT

The snow depth sensor has been removed for the season.  The temperature dropped below 10 
deg C causing the program to read erroneous data.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Maximum Snow Depth(time_max_snow)
• Maximum Snow Depth(max_snow)
• Time of Minimum Snow Depth(time_min_snow)
• Minimum Snow Depth(min_snow_depth)

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E3 - Snow depth sensor removed; data reported as missing

The snow depth sensor was removed from service.  The program was changed so that -9999 is 
entered into the datastream.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Maximum Snow Depth(time_max_snow)
• Maximum Snow Depth(max_snow)
• Time of Minimum Snow Depth(time_min_snow)
• Minimum Snow Depth(min_snow_depth)

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E3 - E3 SMOS 30 MINUTE T/RH DATA SUSPECT

30 minute T/RH values suspect due to all T/RH measurements being incorrect from 16:41 - 
17:09 GMT during a maintenance check of the probe.

• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Beam 0 Temperature(temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of wind direction(sd_deg)

• Standard Deviation of wind direction(sd_deg)
• Beam 0 Temperature(temp)
• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Relative Humidity(sd_rh)
• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)

SGP/SMOS/E3 - Precip data incorrect

The precipitation that was reported on this date was caused by technicians tip testing the 
gage.  Disregard any precipitation data that was generated.

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

SGP/SMOS/E3 - E3 SMOS WIND DATA INCORRECT

Wind speed data began to be reported as 0 m/s on 05/01/2003 @ 04:59 GMT.  The wind 
direction data became incorrect soon after the wind speed data.  It was found that the wiring 
had been broken.  The data wires were re-routed and repaired.

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)
• Standard Deviation of Wind Speed(sd_wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)

• Time of Minimum Wind Speed(time_min_wspd)
• Minimum of Wind speed(min_wspd)
• maximum wind speed (gusts)(max_wspd)
• Time of Maximum Wind Speed(time_max_wspd)

• Mean Wind Speed(wspd)
• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)

• Standard Deviation of wind direction(sd_deg)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Standard Deviation of Wind Speed(sd_wspd)
• Unit Vector Wind Direction(wdir)

SGP/SMOS/E3 - E3 SMOS 30-MINUTE WIND DATA SUSPECT

The 30-minute wind data is suspect due to broken wires.  The wiring was repaired @ 19:09 
GMT.

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)
• Standard Deviation of Wind Speed(sd_wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Standard Deviation of wind direction(sd_deg)
• Standard Deviation of Wind Speed(sd_wspd)
• Unit Vector Wind Direction(wdir)

SGP/SMOS/E3 - 6-month Calibration Checks

During the time periods specified, the SMOS.E3 tower was
lowered for 6-month Calibration Checks.   During these times 
wind data are incorrect and temperature and humidity data 
may be incorrect.

Note, exact times when tower was down or maintenance was
being performed is sometimes unknown.  Users should use
the remaining data from these days with caution.

• Time of Minimum Wind Speed(time_min_wspd)
• Minimum of Wind speed(min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Maximum Temperature(time_max_temp)
• Minimum Relative Humidity(min_rh)
• maximum wind speed (gusts)(max_wspd)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Minimum Temperature(time_min_temp)
• Maximum Barometric Pressure(max_bar_pres)
• Maximum Relative Humidity(max_rh)
• Maximum Temperature(max_temp)
• Minimum Barometric Pressure(min_bar_pres)
• Minimum Temperature(min_temp)
• Time of Maximum Vapor Pressure(time_max_vap_pres)

• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)
• Wind Speed (vector averaged)(wspd_va)
• barometric pressure(bar_pres)
• Mean Wind Speed(wspd)
• Standard Deviation of wind direction(sd_deg)
• Unit Vector Wind Direction(wdir)
• Vapor Pressure (kiloPascals)(vap_pres)

• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Relative Humidity(sd_rh)
• Mean Wind Speed(wspd)
• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Wind Speed(sd_wspd)
• Unit Vector Wind Direction(wdir)
• barometric pressure(bar_pres)
• Standard Deviation of wind direction(sd_deg)
• Beam 0 Temperature(temp)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Barometric Pressure(sd_bar_pres)

SGP/SMOS/E3 - 6-month Calibration Checks

During the time periods specified, the SMOS.E3 tower was
lowered for 6-month Calibration Checks.   During these times 
wind data are incorrect and temperature and humidity data 
may be incorrect.

Note, exact times when tower was down or maintenance was
being performed is sometimes unknown.  Users should use
the remaining data from these days with caution.

• Beam 0 Temperature(temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• barometric pressure(bar_pres)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)
• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Standard Deviation of Wind Speed(sd_wspd)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Relative humidity inside the instrument enclosure(rh)

• Mean Wind Speed(wspd)
• barometric pressure(bar_pres)
• Standard Deviation of wind direction(sd_deg)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)
• Relative humidity inside the instrument enclosure(rh)
• Beam 0 Temperature(temp)

• Maximum Vapor Pressure(max_vap_pres)
• Maximum Barometric Pressure(max_bar_pres)
• maximum wind speed (gusts)(max_wspd)
• Time of Minimum Relative Humidity(time_min_rh)
• Minimum Barometric Pressure(min_bar_pres)
• Minimum Relative Humidity(min_rh)
• Minimum of Wind speed(min_wspd)
• Time of Maximum Temperature(time_max_temp)
• Maximum Relative Humidity(max_rh)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Maximum Temperature(max_temp)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Time of Minimum Temperature(time_min_temp)
• Minimum Vapor Pressure(min_vap_pres)
• Minimum Temperature(min_temp)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Time of Maximum Wind Speed(time_max_wspd)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Wind Speed(time_min_wspd)

• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)
• Unit Vector Wind Direction(wdir)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of wind direction(sd_deg)
• barometric pressure(bar_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Mean Wind Speed(wspd)

• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Wind Speed(sd_wspd)
• Standard Deviation of wind direction(sd_deg)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Standard Deviation of Air Temperature(sd_temp)
• Mean Wind Speed(wspd)
• Vapor Pressure (kiloPascals)(vap_pres)
• Unit Vector Wind Direction(wdir)
• barometric pressure(bar_pres)
• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)

SGP/SMOS/E3 - 6-month Calibration Checks

During the time periods specified, the SMOS.E3 tower was lowered for 6-month Calibration 
Checks.   During these times wind data are incorrect and temperature and humidity data may 
be incorrect.

Note, exact times when tower was down or maintenance was being performed is sometimes 
unknown.  Users should use the remaining data from these days with caution.

• Minimum Temperature(min_temp)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Time of Maximum Wind Speed(time_max_wspd)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Maximum Temperature(time_max_temp)
• Minimum Relative Humidity(min_rh)
• maximum wind speed (gusts)(max_wspd)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Minimum Temperature(time_min_temp)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Maximum Temperature(max_temp)
• Minimum Barometric Pressure(min_bar_pres)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Maximum Barometric Pressure(max_bar_pres)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Minimum Wind Speed(time_min_wspd)
• Maximum Relative Humidity(max_rh)
• Minimum of Wind speed(min_wspd)

• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Beam 0 Temperature(temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• barometric pressure(bar_pres)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Standard Deviation of Wind Speed(sd_wspd)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of wind direction(sd_deg)

• Mean Wind Speed(wspd)
• barometric pressure(bar_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of wind direction(sd_deg)
• Beam 0 Temperature(temp)

SGP/ECOR/E3 - Missing data

Data are missing and unrecoverable.

• Water vapor density (q)(mean_q)
• latent heat of vaporization(lv)
• mean co2 concentration (c)(mean_c)
• rotated covariance wc(cvar_rot_wc)
• rotated covariance wq(cvar_rot_wq)
• covariance of qc(cvar_qc)
• vertical (elevation) wind angle(elev)
• Dummy altitude for Zeb(alt)
• lat(lat)
• average voltage of IRGA cooler(mean_cooler)
• number of c samples removed due to spikes(n_spk_c)
• number of samples with \IRGA hardware problem\ flag(n_bad_irga)
• rotated covariance wt(cvar_rot_wt)
• standard deviation of wind direction(std_wind_dir)
• standard deviation of wind elevation angle(std_elev)
• variance of w(var_rot_w)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• vector averaged wind speed(wind_spd)
• mean value of out of range values and spikes of c -9999 if no spikes(mean_spk_c)
• rotated covariance vc(cvar_rot_vc)
• kurtosis of variable c(kurt_c)
• condensation pressure(cp)
• rotated covariance vq(cvar_rot_vq)
• Retrieved water vapor density profile(rho)
• number of valid q samples(n_good_q)
• rotated covariance vw(cvar_rot_vw)
• Vertical wind velocity (w)(mean_w)
• number of valid t samples(n_good_t)
• variance of v(var_rot_v)
• number of valid u samples(n_good_u)
• variance of u(var_rot_u)
• Virtual temperature (T)(mean_t)
• number of valid v samples(n_good_v)
• number of valid w samples(n_good_w)
• rotated covariance vt(cvar_rot_vt)
• Cross-boom wind velocity (v)(mean_v)
• Down-boom wind velocity (u)(mean_u)
• mean value of out of range values and spikes of t -9999 if no spikes(mean_spk_t)
• mean value of \spike\ u samples(mean_spk_u)
• mean value of \spike\ v samples(mean_spk_v)
• mean value of \spike\ w samples(mean_spk_w)
• vector averaged wind direction(wind_dir)
• CO2 flux(fc)
• 0=real or 1=dummy value of lv(real_lv)
• Vertical angle of wind(phi)
• number of valid c samples(n_good_c)
• 0=real or 1=dummy value of mr(real_mr)
• kurtosis of variable u(kurt_u)
• kurtosis of variable t(kurt_t)
• kurtosis of variable w(kurt_w)
• kurtosis of variable v(kurt_v)
• kurtosis of variable q(kurt_q)
• rotated mean v(mean_rot_v)
• mean horizontal wind speed(mean_rot_u)
• mean value of out of range values and spikes of q -9999 if no spikes(mean_spk_q)
• rotated mean w(mean_rot_w)
• covariance of tq(cvar_tq)
• lon(lon)
• number of w samples removed due to spikes(n_spk_w)
• number of u samples removed due to spikes(n_spk_u)
• number of v samples removed due to spikes(n_spk_v)
• number of t samples removed due to spikes(n_spk_t)
• number of q samples removed due to spikes(n_spk_q)
• covariance of tc(cvar_tc)
• 0=real or 1=dummy value of rho(real_rho)
• latent heat flux(lv_e)
• number of samples with IRGA optical path blocked flag(n_bad_irga_light)
• mixing ratio(mr)
• 0=real or 1=dummy value of cp(real_cp)
• base time(base_time)
• covariance uc(cvar_uc)
• Time offset of tweaks from base_time(time_offset)
• uw covariance(cvar_uw)
• covariance uv(cvar_uv)
• covariance ut(cvar_ut)
• covariance uq(cvar_uq)
• Friction velocity(ustar)
• h(h)
• covariance vq(cvar_vq)
• momentum flux (dynamic)(k)
• covariance vc(cvar_vc)
• vw covariance(cvar_vw)
• time(time)
• covariance vt(cvar_vt)
• rotated covariance uc(cvar_rot_uc)
• variance of variable w(var_w)
• covariance wq(cvar_wq)
• variance of t(var_t)
• variance of variable u(var_u)
• variance of variable v(var_v)
• covariance wc(cvar_wc)
• variance of q(var_q)
• rotated covariance ut(cvar_rot_ut)
• rotated covariance uq(cvar_rot_uq)
• rotated covariance uw(cvar_rot_uw)
• rotated covariance uv(cvar_rot_uv)
• variance of c(var_c)
• number of bad or out of range w samples(n_bad_w)
• wT covariance(cvar_wt)
• number of bad or out of range v samples(n_bad_v)
• number of bad or out of range u samples(n_bad_u)
• number of bad or out of range t samples(n_bad_t)
• skewness of variable c(skew_c)
• skewness of variable w(skew_w)
• skewness of variable v(skew_v)
• number of bad or out of range q samples(n_bad_q)
• average temperature (IGRA internal sensor)(temp_irga)
• skewness of variable q(skew_q)
• number of bad or out of range c samples(n_bad_c)
• skewness of variable u(skew_u)
• skewness of variable t(skew_t)
• number of samples with bad sonic status flag(n_bad_son_ic)

SGP/ECOR/E3 - Failed IRGA

Infrared gas analyzer (IRGA) failed 6/16; a new IRGA was installed on
6/30.  All data related to CO2 and water vapor concentration measurements
(including CO2 flux and latent heat flux) are incorrect for the period of
June 16, 2004, 17:30 to June 30, 2004, 17:30.  Wind and sensible heat flux data are OK.

• rotated covariance uc(cvar_rot_uc)
• Water vapor density (q)(mean_q)
• latent heat of vaporization(lv)
• covariance wq(cvar_wq)
• CO2 flux(fc)
• covariance wc(cvar_wc)
• covariance uc(cvar_uc)
• number of valid c samples(n_good_c)
• mean co2 concentration (c)(mean_c)
• variance of q(var_q)
• rotated covariance wc(cvar_rot_wc)
• rotated covariance wq(cvar_rot_wq)
• covariance of qc(cvar_qc)
• rotated covariance uq(cvar_rot_uq)
• kurtosis of variable q(kurt_q)
• variance of c(var_c)
• number of c samples removed due to spikes(n_spk_c)
• number of samples with \IRGA hardware problem\ flag(n_bad_irga)
• mean value of out of range values and spikes of q -9999 if no spikes(mean_spk_q)
• covariance uq(cvar_uq)
• skewness of variable c(skew_c)
• covariance of tq(cvar_tq)
• covariance vq(cvar_vq)
• average temperature (IGRA internal sensor)(temp_irga)
• number of bad or out of range q samples(n_bad_q)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• mean value of out of range values and spikes of c -9999 if no spikes(mean_spk_c)
• skewness of variable q(skew_q)
• rotated covariance vc(cvar_rot_vc)
• covariance vc(cvar_vc)
• kurtosis of variable c(kurt_c)
• number of bad or out of range c samples(n_bad_c)
• number of q samples removed due to spikes(n_spk_q)
• condensation pressure(cp)
• covariance of tc(cvar_tc)
• rotated covariance vq(cvar_rot_vq)
• Retrieved water vapor density profile(rho)
• number of valid q samples(n_good_q)
• latent heat flux(lv_e)
• number of samples with IRGA optical path blocked flag(n_bad_irga_light)
• mixing ratio(mr)

SGP/ECOR/E3 - Data transfer problem

Serial communication with one sensor (the IRGA) were partially disrupted due to 
deteriorating hardware from 13:53, Dec. 19, 2004 to 09:31 Dec. 20, 2004.  Serial data from the IRGA 
is mainly used to get sensor status codes, so this might lead to false increase of "bad" 
point count.  It seems that IRGA analog outputs (stored in raw sonic data file,  primary 
source of data) were not affected, so the flux data may be reprocessed or verified using 
raw sonic data files and ignoring IRGA sensor status.

• Raw data stream - documentation not supported(raw)

• rotated covariance uc(cvar_rot_uc)
• Water vapor density (q)(mean_q)
• latent heat of vaporization(lv)
• covariance wq(cvar_wq)
• CO2 flux(fc)
• covariance wc(cvar_wc)
• covariance uc(cvar_uc)
• number of valid c samples(n_good_c)
• mean co2 concentration (c)(mean_c)
• variance of q(var_q)
• rotated covariance wc(cvar_rot_wc)
• rotated covariance wq(cvar_rot_wq)
• covariance of qc(cvar_qc)
• rotated covariance uq(cvar_rot_uq)
• kurtosis of variable q(kurt_q)
• variance of c(var_c)
• average voltage of IRGA cooler(mean_cooler)
• number of c samples removed due to spikes(n_spk_c)
• number of samples with \IRGA hardware problem\ flag(n_bad_irga)
• mean value of out of range values and spikes of q -9999 if no spikes(mean_spk_q)
• covariance uq(cvar_uq)
• rotated covariance wt(cvar_rot_wt)
• skewness of variable c(skew_c)
• covariance of tq(cvar_tq)
• covariance vq(cvar_vq)
• average temperature (IGRA internal sensor)(temp_irga)
• number of bad or out of range q samples(n_bad_q)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• mean value of out of range values and spikes of c -9999 if no spikes(mean_spk_c)
• skewness of variable q(skew_q)
• rotated covariance vc(cvar_rot_vc)
• covariance vc(cvar_vc)
• kurtosis of variable c(kurt_c)
• number of bad or out of range c samples(n_bad_c)
• number of q samples removed due to spikes(n_spk_q)
• condensation pressure(cp)
• covariance of tc(cvar_tc)
• rotated covariance vq(cvar_rot_vq)
• Retrieved water vapor density profile(rho)
• number of valid q samples(n_good_q)
• latent heat flux(lv_e)
• number of samples with IRGA optical path blocked flag(n_bad_irga_light)
• mixing ratio(mr)

SGP/SMOS/E3 - Intermittent Instrument problem

RH values drop erroneously low intermittently during time period.  Subsequent maintenance 
could find no problem and problem disappeared on its own.

• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Relative Humidity(sd_rh)

• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Relative Humidity(max_rh)
• Minimum Relative Humidity(min_rh)

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

SGP/SMOS/E3 - Ice Storm froze wind speed sensor

Wind speed sensor frozen or affected by ice storm during the periods
specified.

• Time of Minimum Wind Speed(time_min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• maximum wind speed (gusts)(max_wspd)
• Minimum of Wind speed(min_wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)

SGP/SMOS/E3 - Wind Data Suspect

Wind speed and direction data are suspect during time period due to icing.

• Time of Minimum Wind Speed(time_min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• maximum wind speed (gusts)(max_wspd)
• Minimum of Wind speed(min_wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)
• Standard Deviation of Wind Speed(sd_wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)

SGP/SMOS/E3 - Reprocess: Wind direction offset

When the SGP.E3 SMOS tower was installed it was not aligned
properly resulting in a 7 degree offset.  On 3/9/05, the 
datalogger program was modified to correct for this offset.

• Unit Vector Wind Direction(wdir)

• Unit Vector Wind Direction(wdir)

SGP/SMOS/E3 - Reprocess: Wind direction offset

When the SGP.E3 SMOS tower was installed it was not aligned
properly resulting in a 7 degree offset.  On 3/9/05, the
datalogger program was modified to correct for this offset.

• Unit Vector Wind Direction(wdir)

• Unit Vector Wind Direction(wdir)

SGP/ECOR/E3 - CO2/H2O Sensor Not Working

The CO2/H2O sensor failed.  Means and fluxes of CO2 and H2O (lv_e) are incorrect or 
missing.

• rotated covariance uc(cvar_rot_uc)
• Water vapor density (q)(mean_q)
• covariance of tq(cvar_tq)
• covariance vq(cvar_vq)
• average temperature (IGRA internal sensor)(temp_irga)
• covariance wq(cvar_wq)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• CO2 flux(fc)
• covariance wc(cvar_wc)
• rotated covariance vc(cvar_rot_vc)
• covariance vc(cvar_vc)
• covariance uc(cvar_uc)
• variance of q(var_q)
• mean co2 concentration (c)(mean_c)
• rotated covariance wc(cvar_rot_wc)
• rotated covariance wq(cvar_rot_wq)
• covariance of tc(cvar_tc)
• covariance of qc(cvar_qc)
• rotated covariance vq(cvar_rot_vq)
• rotated covariance uq(cvar_rot_uq)
• latent heat flux(lv_e)
• variance of c(var_c)
• covariance uq(cvar_uq)

SGP/SMOS/E3 - RH values above max limit during high humidity situations

RH% values intremittently exceeded maximum allowed during high humidity situations.  
Sensor was replaced.

• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Relative Humidity(sd_rh)

• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Relative Humidity(max_rh)
• Minimum Relative Humidity(min_rh)

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

SGP/SMOS/E3 - Rainfall Data Suspect

Rainfall during this time period was suspect as the gauge was found plugged on 07/12/2006. 
 Last check of site occurred on 06/28/2006.  Any rainfall data collected, whether the 
data is 0 or other than zero is suspect.

• Hourly precipitation(precip)

• Hourly precipitation(precip)

SGP/SMOS/E3 - Wind Data Incorrect Due to Icing

An ice storm caused the wind data from the RM Young wind sensor to be incorrect.  In many 
instances it was frozen and unmoving, at times it measured values but those are extremely 
suspect.

• Time of Minimum Wind Speed(time_min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• maximum wind speed (gusts)(max_wspd)
• Minimum of Wind speed(min_wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)
• Standard Deviation of Wind Speed(sd_wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)

SGP/SMOS - Snowfall caused delayed count of precip

A snow/ice storm moved through the SGP region on 01/31/08 bringing below-freezing 
temperatures, affecting the precip field.  Data is suspect during the date/time range specified 
due to melting ice after temperatures warmed above freezing.

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

• Hourly precipitation(precip)

SGP/SMOS/E3 - Incorrect Offset for Wind Directon

An incorrect offset of 7 degrees was subtracted from the wind direction to correct for 
misalignment of the towers to true north. The wind direction data may be corrected but the 
vector averaged wind speed cannot. Subsequent audits have highlighted problems with past 
measurements of tower alignments.  All corrections to wind direction are being removed and 
Users are directed to view the Instrument Handbook for a table listing all tower 
alignment deviations from true north.  Users can adjust the data at their discretion.

• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)

• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)

SGP/SMOS/E3 - Missing data

Data are missing and unrecoverable

• Beam 0 Temperature(temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• barometric pressure(bar_pres)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Dummy altitude for Zeb(alt)
• lon(lon)
• Unit Vector Wind Direction(wdir)
• Time offset of tweaks from base_time(time_offset)
• Batter Voltage(vbat)
• base time(base_time)
• Standard Deviation of wind direction(sd_deg)
• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Snow Depth(snow)
• Standard Deviation of Wind Speed(sd_wspd)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• lat(lat)
• Relative humidity inside the instrument enclosure(rh)
• Snow Depth Sensor(snow_sen)
• Hourly precipitation(precip)

• Mean Wind Speed(wspd)
• Hourly precipitation(precip)
• barometric pressure(bar_pres)
• base time(base_time)
• lon(lon)
• Dummy altitude for Zeb(alt)
• Standard Deviation of wind direction(sd_deg)
• lat(lat)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)
• Relative humidity inside the instrument enclosure(rh)
• Time offset of tweaks from base_time(time_offset)
• Beam 0 Temperature(temp)

• Maximum Vapor Pressure(max_vap_pres)
• Maximum Barometric Pressure(max_bar_pres)
• maximum wind speed (gusts)(max_wspd)
• Time of Minimum Relative Humidity(time_min_rh)
• lon(lon)
• Minimum Barometric Pressure(min_bar_pres)
• Time of Maximum Snow Depth(time_max_snow)
• Minimum Relative Humidity(min_rh)
• Minimum of Wind speed(min_wspd)
• Time of Maximum Temperature(time_max_temp)
• Maximum Relative Humidity(max_rh)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Maximum Snow Depth(max_snow)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Maximum Temperature(max_temp)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Time of Minimum Temperature(time_min_temp)
• Dummy altitude for Zeb(alt)
• Minimum Vapor Pressure(min_vap_pres)
• Minimum Temperature(min_temp)
• base time(base_time)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Time of Minimum Snow Depth(time_min_snow)
• Time offset of tweaks from base_time(time_offset)
• Time of Maximum Wind Speed(time_max_wspd)
• lat(lat)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Wind Speed(time_min_wspd)
• Minimum Snow Depth(min_snow_depth)

SGP/SMOS/E3 - Missing data

Data are missing and unrecoverable

• Beam 0 Temperature(temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• barometric pressure(bar_pres)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Dummy altitude for Zeb(alt)
• lon(lon)
• Unit Vector Wind Direction(wdir)
• Time offset of tweaks from base_time(time_offset)
• Batter Voltage(vbat)
• base time(base_time)
• Standard Deviation of wind direction(sd_deg)
• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Snow Depth(snow)
• Standard Deviation of Wind Speed(sd_wspd)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• lat(lat)
• Relative humidity inside the instrument enclosure(rh)
• Snow Depth Sensor(snow_sen)
• Hourly precipitation(precip)

• lon(lon)
• base time(base_time)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Dummy altitude for Zeb(alt)
• Time of Maximum Wind Speed(time_max_wspd)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Maximum Temperature(time_max_temp)
• Minimum Relative Humidity(min_rh)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• lat(lat)
• Maximum Temperature(max_temp)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Maximum Barometric Pressure(max_bar_pres)
• Time of Maximum Relative Humidity(time_max_rh)
• Time offset of tweaks from base_time(time_offset)
• Minimum Snow Depth(min_snow_depth)
• Minimum Temperature(min_temp)
• time(time)
• Time of Maximum Snow Depth(time_max_snow)
• maximum wind speed (gusts)(max_wspd)
• Time of Minimum Snow Depth(time_min_snow)
• Time of Minimum Temperature(time_min_temp)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Minimum Barometric Pressure(min_bar_pres)
• Maximum Snow Depth(max_snow)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Minimum Wind Speed(time_min_wspd)
• Maximum Relative Humidity(max_rh)
• Minimum of Wind speed(min_wspd)

• Mean Wind Speed(wspd)
• Hourly precipitation(precip)
• barometric pressure(bar_pres)
• base time(base_time)
• lon(lon)
• Dummy altitude for Zeb(alt)
• Standard Deviation of wind direction(sd_deg)
• lat(lat)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)
• Relative humidity inside the instrument enclosure(rh)
• Time offset of tweaks from base_time(time_offset)
• Beam 0 Temperature(temp)

SGP/SMOS/E3 - RH values incorrect

RH values incorrect due to failing sensor

• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Relative Humidity(max_rh)
• Maximum Vapor Pressure(max_vap_pres)
• Minimum Relative Humidity(min_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Maximum Relative Humidity(time_max_rh)

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

• Standard Deviation of Relative Humidity(sd_rh)
• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)

SGP/SMOS/E3 - RH values incorrect due to moisture

Precipitation contamination caused poor readings by the T/RH probe.  All RH and derived 
values are incorrect.

• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Relative Humidity(max_rh)
• Maximum Vapor Pressure(max_vap_pres)
• Minimum Relative Humidity(min_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Maximum Relative Humidity(time_max_rh)

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

• Standard Deviation of Relative Humidity(sd_rh)
• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)

SGP/SMOS/E3 - Incorrect data

The data for SMOS at E3 was all 9's or 0's for 1630 - 1800 GMT on 2 OCT 96 for an unknown 
reason.

• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)
• Dummy altitude for Zeb(alt)
• Wind Speed (vector averaged)(wspd_va)
• barometric pressure(bar_pres)
• lon(lon)
• Mean Wind Speed(wspd)
• Time offset of tweaks from base_time(time_offset)
• Standard Deviation of wind direction(sd_deg)
• lat(lat)
• Unit Vector Wind Direction(wdir)
• base time(base_time)
• Hourly precipitation(precip)
• Vapor Pressure (kiloPascals)(vap_pres)

• Time offset of tweaks from base_time(time_offset)
• base time(base_time)
• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Relative Humidity(sd_rh)
• Vapor Pressure (kiloPascals)(vap_pres)
• Mean Wind Speed(wspd)
• Hourly precipitation(precip)
• Standard Deviation of Wind Speed(sd_wspd)
• Unit Vector Wind Direction(wdir)
• lat(lat)
• barometric pressure(bar_pres)
• lon(lon)
• Batter Voltage(vbat)
• Snow Depth Sensor(snow_sen)
• Standard Deviation of wind direction(sd_deg)
• Beam 0 Temperature(temp)
• Wind Speed (vector averaged)(wspd_va)
• Dummy altitude for Zeb(alt)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Snow Depth(snow)

SGP/SMOS/E3 - Tower lowered to surface

The E3 SMOS was lowered to the surface on 7 OCT 1999 between 1430 and 1450 GMT to install 
counterweights.  All wind speed and direction data are incorrect during this period.  
Temperature and humidity data should be used with caution.

• Time of Minimum Wind Speed(time_min_wspd)
• Minimum of Wind speed(min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Maximum Temperature(time_max_temp)
• Minimum Relative Humidity(min_rh)
• maximum wind speed (gusts)(max_wspd)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Minimum Temperature(time_min_temp)
• Maximum Relative Humidity(max_rh)
• Maximum Temperature(max_temp)
• Minimum Temperature(min_temp)
• Time of Maximum Vapor Pressure(time_max_vap_pres)

• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Standard Deviation of wind direction(sd_deg)
• Unit Vector Wind Direction(wdir)
• Vapor Pressure (kiloPascals)(vap_pres)

• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Relative Humidity(sd_rh)
• Mean Wind Speed(wspd)
• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Wind Speed(sd_wspd)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)
• Beam 0 Temperature(temp)
• Wind Speed (vector averaged)(wspd_va)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)