SGP/SMOS/E9 - 6-month Calibration Checks

During the time periods specified, the SMOS.E9 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.

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

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

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

SGP/SMOS/E9 - Ice storm froze windspeed and direction sensors

Windspeed and direction sensors frozen by ice storm during the period
specified.

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

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

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

SGP/SMOS/E9 - 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.

• 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)

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

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

SGP/SMOS/E9 - Missing Data

Data are missing and unrecoverable

• Wind Speed (vector averaged)(wspd_va)
• lat(lat)
• Hourly precipitation(precip)
• Dummy altitude for Zeb(alt)
• Snow Depth(snow)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Batter Voltage(vbat)
• base time(base_time)
• Standard Deviation of Wind Speed(sd_wspd)
• Mean Wind Speed(wspd)
• Vapor Pressure (kiloPascals)(vap_pres)
• lon(lon)
• Standard Deviation of wind direction(sd_deg)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Standard Deviation of Air Temperature(sd_temp)
• barometric pressure(bar_pres)
• 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)
• Snow Depth Sensor(snow_sen)

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

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