SGP/SMOS/E21 - 6-month Calibration Checks

During the time periods specified, the SMOS.E21 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.

Do not use data during these time periods.

• Wind Speed (vector averaged)(wspd_va)
• Wind Direction(wdir)
• Barometric pressure(bar_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed(wspd)
• Environmental Temperature (hybrid-b grid)(temp)
• Relative Humidity (hybrid-b grid)(rh)
• Standard Deviation of wind direction(sd_deg)

• Time of Relative Humidity(time_min_rh)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Time of maximum vapor pressure(time_max_vap_pres)
• Time of minimum vapor pressure(time_min_vap_pres)
• Daily minimum vapor pressure(min_vap_pres)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Maximum Barometric Pressure(max_bar_pres)
• Daily minimum air temperature(min_temp)
• Time of maximum relative humidity(time_max_rh)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Maximum Wind Speed(time_max_wspd)
• Daily maximum relative humidity(max_rh)
• Time of maximum air temperature(time_max_temp)
• Minimum Relative Humidity(min_rh)
• Time of Minimum Temperature(time_min_temp)
• Minimum of Wind speed(min_wspd)
• Minimum Barometric Pressure(min_bar_pres)
• Maximum Temperature(max_temp)
• Time of Minimum Wind Speed(time_min_wspd)
• Maximum of Wind speed(max_wspd)

• Barometric pressure(bar_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Wind Speed(sd_wspd)
• Environmental Temperature (hybrid-b grid)(temp)
• Wind Speed (vector averaged)(wspd_va)
• Relative Humidity (hybrid-b grid)(rh)
• Wind Speed(wspd)
• Standard deviation of vapor pressure(sd_vap_pres)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Standard Deviation of Air Temperature(sd_temp)
• Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)