SGP/SMOS/E24 - 6-month Calibration Checks

During the time periods specified, the SMOS.E24 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.

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

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

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

SGP/SMOS/E24 - Wind Speed Data Incorrect Due to Icing

Wind speed data was artificially low incorrect during icing conditions.

• Wind Speed (vector averaged)(wspd_va)
• surface wind speed(wspd)

• Standard Deviation of Wind Speed(sd_wspd)
• Wind Speed (vector averaged)(wspd_va)
• surface wind speed(wspd)

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

SGP/SMOS/E24 - Wind Speed Frozen During Icing Conditions

The wind speed sensor was completely frozen during icing conditions.

• Wind Speed (vector averaged)(wspd_va)
• surface wind speed(wspd)

• Standard Deviation of Wind Speed(sd_wspd)
• Wind Speed (vector averaged)(wspd_va)
• surface wind speed(wspd)

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

SGP/SMOS/E24 - Barometer failure

The barometer failed.  Data during the time indicated is erratic and incorrect.

• barometric pressure(bar_pres)

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

• Maximum Barometric Pressure(max_bar_pres)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Minimum Barometric Pressure(min_bar_pres)
• Time of Minimum Barometric Pressure(time_min_bar_pres)