SGP/SMOS/E7 - E7 SMOS SNOW DEPTH DATA INCORRECT

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

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

• Snow Depth Sensor(snow_sen)
• Existence of snow?(snow)

• Snow Depth Sensor(snow_sen)
• Existence of snow?(snow)

SGP/SMOS/E7 - E7 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.

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

• Snow Depth Sensor(snow_sen)
• Existence of snow?(snow)

• Snow Depth Sensor(snow_sen)
• Existence of snow?(snow)

SGP/SMOS/E7 - SNOW DEPTH DATA QUESTIONABLE

Snow depth readings were intermittently reported as -9999, outside of manufacturer's 
tolerance, and good values.

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

• Snow Depth Sensor(snow_sen)
• Existence of snow?(snow)

• Snow Depth Sensor(snow_sen)
• Existence of snow?(snow)

SGP/SMOS/E7 - SNOW DEPTH DATA INCORRECT

Snow depth sensor was removed for the season.  Temperatures fell below 10 deg C causing 
program to collect erroneous data.

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

• Snow Depth Sensor(snow_sen)
• Existence of snow?(snow)

• Snow Depth Sensor(snow_sen)
• Existence of snow?(snow)

SGP/SMOS/E7 - 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.

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

• Snow Depth Sensor(snow_sen)
• Existence of snow?(snow)

• Snow Depth Sensor(snow_sen)
• Existence of snow?(snow)

SGP/SMOS/E7 - 30 minute Data Values Suspect

30 minute data values suspect due to tower being lowered from 14:22 - 14:38 GMT for T/RH 
probe replacement.

• Snow Depth Sensor(snow_sen)
• precipitation accumulated between outputs, 3-hr accumulation(precip)
• Unit Vector Wind Direction(wdir)
• Standard deviation of Relative Humidity(sd_rh)
• Environmental Temperature (hybrid-b grid)(temp)
• Standard Deviation of Air Temperature(sd_temp)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Wind Speed(sd_wspd)
• Vapor Pressure (kiloPascals)(vap_pres)
• Existence of snow?(snow)
• surface wind speed(wspd)
• barometric pressure(bar_pres)
• Standard deviation of Barometric Pressure(sd_bar_pres)
• Standard deviation of Vapor Pressure(sd_vap_pres)
• Standard Deviation of wind direction(sd_deg)
• Relative humidity scaled, by total column amount from MWR(rh)

• Standard deviation of Vapor Pressure(sd_vap_pres)
• Snow Depth Sensor(snow_sen)
• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity scaled, by total column amount from MWR(rh)
• Standard deviation of Barometric Pressure(sd_bar_pres)
• precipitation accumulated between outputs, 3-hr accumulation(precip)
• Unit Vector Wind Direction(wdir)
• barometric pressure(bar_pres)
• Environmental Temperature (hybrid-b grid)(temp)
• Standard Deviation of wind direction(sd_deg)
• Standard Deviation of Wind Speed(sd_wspd)
• Wind Speed (vector averaged)(wspd_va)
• surface wind speed(wspd)
• Existence of snow?(snow)
• Standard Deviation of Air Temperature(sd_temp)
• Standard deviation of Relative Humidity(sd_rh)

SGP/SMOS/E7 - Barometric Pressure Incorrect

The 30 minute barometric pressure reading is artificially low due to two 0.00 values being 
used (20:02 & 20:03 GMT) in the averaging period.

• barometric pressure(bar_pres)
• Standard deviation of Barometric Pressure(sd_bar_pres)

• barometric pressure(bar_pres)
• Standard deviation of Barometric Pressure(sd_bar_pres)

SGP/SMOS/E7 - 6-month Calibration Checks

During the time periods specified, the SMOS.E7 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 Maximum Temperature(time_max_temp)
• Time of Maximum Wind Speed(time_max_wspd)
• Minimum Barometric Pressure(min_bar_pres)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Minimum Temperature(min_temp)
• Maximum Relative Humidity(max_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Minimum of Wind speed(min_wspd)
• Minimum Relative Humidity(min_rh)
• Time of Minimum Temperature(time_min_temp)
• Time of Minimum Wind Speed(time_min_wspd)
• Maximum Vapor Pressure(max_vap_pres)
• Maximum Temperature(max_temp)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Barometric Pressure(max_bar_pres)
• maximum wind speed (gusts)(max_wspd)

• Unit Vector Wind Direction(wdir)
• Standard deviation of Relative Humidity(sd_rh)
• Standard Deviation of Air Temperature(sd_temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• Standard deviation of Barometric Pressure(sd_bar_pres)
• Relative humidity scaled, by total column amount from MWR(rh)
• Environmental Temperature (hybrid-b grid)(temp)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Wind Speed(sd_wspd)
• surface wind speed(wspd)
• barometric pressure(bar_pres)
• Standard deviation of Vapor Pressure(sd_vap_pres)
• Standard Deviation of wind direction(sd_deg)

• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity scaled, by total column amount from MWR(rh)
• Environmental Temperature (hybrid-b grid)(temp)
• Wind Speed (vector averaged)(wspd_va)
• surface wind speed(wspd)
• Standard Deviation of wind direction(sd_deg)
• Unit Vector Wind Direction(wdir)
• barometric pressure(bar_pres)

• Standard deviation of Vapor Pressure(sd_vap_pres)
• Unit Vector Wind Direction(wdir)
• barometric pressure(bar_pres)
• Environmental Temperature (hybrid-b grid)(temp)
• Standard Deviation of Wind Speed(sd_wspd)
• Standard Deviation of Air Temperature(sd_temp)
• Standard deviation of Relative Humidity(sd_rh)
• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity scaled, by total column amount from MWR(rh)
• Standard deviation of Barometric Pressure(sd_bar_pres)
• Standard Deviation of wind direction(sd_deg)
• Wind Speed (vector averaged)(wspd_va)
• surface wind speed(wspd)

• Environmental Temperature (hybrid-b grid)(temp)
• Unit Vector Wind Direction(wdir)
• surface wind speed(wspd)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• barometric pressure(bar_pres)
• Relative humidity scaled, by total column amount from MWR(rh)
• Standard Deviation of wind direction(sd_deg)

SGP/SMOS/E7 - 6-month Calibration Checks

During the time periods specified, the SMOS.E7 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.

Calibration results are available from the OMIS database at 
    
http://www.ops.sgp.arm.gov:591/smos6cal/default.htm 
To view all 6-month calibration reports leave the date time entry blank.

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

• Unit Vector Wind Direction(wdir)
• Standard deviation of Relative Humidity(sd_rh)
• Environmental Temperature (hybrid-b grid)(temp)
• Standard Deviation of Air Temperature(sd_temp)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Wind Speed(sd_wspd)
• Vapor Pressure (kiloPascals)(vap_pres)
• surface wind speed(wspd)
• barometric pressure(bar_pres)
• Standard deviation of Barometric Pressure(sd_bar_pres)
• Standard deviation of Vapor Pressure(sd_vap_pres)
• Standard Deviation of wind direction(sd_deg)
• Relative humidity scaled, by total column amount from MWR(rh)

• Environmental Temperature (hybrid-b grid)(temp)
• Relative humidity scaled, by total column amount from MWR(rh)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)
• surface wind speed(wspd)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• barometric pressure(bar_pres)

SGP/SMOS/E7 - datalogger down due to power outage

A power outage caused the datalogger to lose it's program resulting in no data being 
collected during the time period.

• Maximum Relative Humidity(max_rh)
• Time of Maximum Wind Speed(time_max_wspd)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Maximum Temperature(time_max_temp)
• Time of Maximum Relative Humidity(time_max_rh)
• Maximum Barometric Pressure(max_bar_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Minimum Relative Humidity(time_min_rh)
• Minimum Snow Depth(min_snow_depth)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Maximum Snow Depth(max_snow)
• Minimum Temperature(min_temp)
• north latitude for all the input platforms.(lat)
• Maximum Temperature(max_temp)
• Time of Minimum Snow Depth(time_min_snow)
• altitude above sea levelaltunits(alt)
• Minimum Relative Humidity(min_rh)
• Time of Maximum Snow Depth(time_max_snow)
• Time of Minimum Temperature(time_min_temp)
• maximum wind speed (gusts)(max_wspd)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Time offset from midnight of date of file. For CO data, this is identical to
  time_offset and is included for compatibility.(time)
• Time offset from base_time(base_time)
• east longitude for all the input platforms.(lon)
• Time of Minimum Wind Speed(time_min_wspd)
• Time offset of tweaks from base_time(time_offset)
• Minimum Vapor Pressure(min_vap_pres)
• Minimum Barometric Pressure(min_bar_pres)
• Minimum of Wind speed(min_wspd)

• Unit Vector Wind Direction(wdir)
• Standard deviation of Relative Humidity(sd_rh)
• Battery Voltage (of 60m battery) for QA/QC purposes(vbat)
• Standard Deviation of Air Temperature(sd_temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• east longitude for all the input platforms.(lon)
• Standard deviation of Barometric Pressure(sd_bar_pres)
• Time offset from base_time(base_time)
• Relative humidity scaled, by total column amount from MWR(rh)
• precipitation accumulated between outputs, 3-hr accumulation(precip)
• Snow Depth Sensor(snow_sen)
• north latitude for all the input platforms.(lat)
• Environmental Temperature (hybrid-b grid)(temp)
• Time offset of tweaks from base_time(time_offset)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Wind Speed(sd_wspd)
• altitude above sea levelaltunits(alt)
• Existence of snow?(snow)
• surface wind speed(wspd)
• barometric pressure(bar_pres)
• Standard deviation of Vapor Pressure(sd_vap_pres)
• Standard Deviation of wind direction(sd_deg)

• altitude above sea levelaltunits(alt)
• Environmental Temperature (hybrid-b grid)(temp)
• precipitation accumulated between outputs, 3-hr accumulation(precip)
• north latitude for all the input platforms.(lat)
• Unit Vector Wind Direction(wdir)
• Time offset of tweaks from base_time(time_offset)
• surface wind speed(wspd)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• barometric pressure(bar_pres)
• Relative humidity scaled, by total column amount from MWR(rh)
• Standard Deviation of wind direction(sd_deg)
• Time offset from base_time(base_time)
• east longitude for all the input platforms.(lon)

SGP/SMOS/E7 - Reprocess: Wind direction offset

When the SGP.E7 SMOS tower was installed it was not aligned
properly resulting in a 6 degree offset.  On 3/08/05, the
datalogger program was modified to correct for this offset.

• Unit Vector Wind Direction(wdir)

• Unit Vector Wind Direction(wdir)