SGP/TWR/C1 - Temperature probe incorrectly configured

Temperature and vapor pressure were incorrect because the excitation voltage for the 
temperature probe was incorrectly set.

• Beam 0 Temperature(temp)
• Vapor Pressure (kiloPascals)(vap_pres)

• Vapor Pressure (kiloPascals)(vap_pres)
• Beam 0 Temperature(temp)

• Beam 0 Temperature(temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Vapor Pressure(sd_vap_pres)

• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Beam 0 Temperature(temp)

SGP/TWR/C1 - West-side 25m and 60m data incorrect.

Data at 25m and 60m levels were incorrect.

• Relative humidity inside the instrument enclosure(rh)
• Beam 0 Temperature(temp)
• Vapor Pressure (kiloPascals)(vap_pres)

• Vapor Pressure (kiloPascals)(vap_pres)
• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)

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

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

SGP/TWR/C1 - West-side 25m data incorrect due to low battery

A low battery voltage caused T, RH, and VP to be incorrect. Data may be missing from some 
of the second period because battery voltage dropped to zero at one point.

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

• Vapor Pressure (kiloPascals)(vap_pres)
• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)

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

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

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

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

SGP/SMOS/E4 - 6-month Calibration Checks

During the time periods specified, the SMOS.E4 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.

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

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

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

SGP/SMOS/E5 - 6-month Calibration Checks

During the time periods specified, the SMOS.E5 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.

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

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

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

SGP/SMOS/E8 - 6-month Calibration Checks

During the time periods specified, the SMOS.E8 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 Vapor Pressure(time_min_vap_pres)
• Time of Minimum Wind Speed(time_min_wspd)
• Minimum of Wind speed(min_wspd)
• Minimum Temperature(min_temp)
• Time of Minimum Temperature(time_min_temp)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Barometric Pressure(max_bar_pres)
• maximum wind speed (gusts)(max_wspd)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Time of Maximum Temperature(time_max_temp)
• Minimum Barometric Pressure(min_bar_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Minimum Relative Humidity(min_rh)
• Maximum Relative Humidity(max_rh)
• Maximum Temperature(max_temp)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Maximum Wind Speed(time_max_wspd)

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

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

SGP/SMOS/E6 - 6-month Calibration Checks

During the time periods specified, the SMOS.E6 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.

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

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

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

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)
• Beam 0 Temperature(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)
• Mean 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 inside the instrument enclosure(rh)

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

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/E27 - 6-month Calibration Checks

During the time periods specified, the SMOS.E27 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.

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

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

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

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.

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

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

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

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 inside the instrument enclosure(rh)
• Standard Deviation of wind direction(sd_deg)
• Vapor Pressure (kiloPascals)(vap_pres)
• Beam 0 Temperature(temp)
• barometric pressure(bar_pres)
• Unit Vector Wind Direction(wdir)
• Mean 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)
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)
• Relative humidity inside the instrument enclosure(rh)
• Beam 0 Temperature(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/TWR/C1 - Tower SE-side lowered for maintenance

The southeast side tower carriage was lowered for maintenance and/or data are off-scale 
during maintenance.

• Relative humidity at 60 m(rh_60m)
• Relative humidity at 25 m(rh_25m)
• Vapor pressure at 25 m(vap_pres_25m)
• Temperature at 25 m(temp_25m)
• Vapor pressure at 60 m(vap_pres_60m)
• Temperature at 60 m(temp_60m)

• Vapor pressure at 25 m(vap_pres_25m)
• Vapor pressure at 60 m(vap_pres_60m)
• Standard Deviation of 25 m Temperature(sd_temp_25m)
• Temperature at 60 m(temp_60m)
• Standard Deviation of 60 m Vapor Pressure(sd_vap_pres_60m)
• Standard Deviation of 25 m Relative Humidity(sd_rh_25m)
• Relative humidity at 25 m(rh_25m)
• Relative humidity at 60 m(rh_60m)
• Standard Deviation of 60 m Relative Humidity(sd_rh_60m)
• Standard Deviation of 60 m Temperature(sd_temp_60m)
• Standard Deviation of 25 m Vapor Pressure(sd_vap_pres_25m)
• Temperature at 25 m(temp_25m)

SGP/SMOS/E8 - Incorrect Temp, RH and windspeed

Bovines chewed through the T/RH and wind speed and direction cable.

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

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

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

SGP/SMOS/E27 - Rain fall data incorrect

Rainfall data incorrect.  Technicians found gauge plugged and full of water.  Gauge was 
unplugged and all water ran through funnel.  Data appear to be measuring a massive deluge 
when in fact no rain was occurring.

• Hourly precipitation(precip)

• Hourly precipitation(precip)

SGP/SMOS/E27 - Rainfall Data Suspect

Rainfall during this time period was suspect as the gauge was found plugged on 05/09/2006 
at 15:38 GMT.  Last check of site occurred on 04/26/2006 @ 16:35 GMT.  Any rainfall data 
collected, whether the data is 0 or other than zero is suspect.

• Hourly precipitation(precip)

• Hourly precipitation(precip)

SGP/SMOS/E21 - Wind Sensor Frozen

The wind sensor was frozen during icing conditions.  All wind data is incorrect.

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

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

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)
• Mean Wind Speed(wspd)

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

• Standard Deviation of Wind Speed(sd_wspd)
• Wind Speed (vector averaged)(wspd_va)
• Mean 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/E27 - Wind Speed Data Incorrect During Icing Conditions

Icing caused the wind speed sensor data to be artificailly low.

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

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

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

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/E7 - Rainfall Data Suspect

Rainfall during this time period was suspect as the gauge was found plugged on 11/28/2006. 
 Last check of site occurred on 11/14/2006.  Any rainfall data collected, whether the 
data is 0 or other than zero is suspect.

• Hourly precipitation(precip)

• Hourly precipitation(precip)

SGP/SMOS/E21 - T/RH probe data incorrect

The T/RH probe data was read incorrectly due to the wrong program getting loaded from the 
stoage module.

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

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

• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Minimum Temperature(time_min_temp)
• Time of Minimum Relative Humidity(time_min_rh)
• Minimum Temperature(min_temp)
• Time of Maximum Temperature(time_max_temp)
• Time of Maximum Relative Humidity(time_max_rh)
• Maximum Relative Humidity(max_rh)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Relative Humidity(min_rh)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Temperature(max_temp)
• Maximum Vapor Pressure(max_vap_pres)

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)

SGP/SMOS/E7 - Wind sensor binding at low wind speeds

The wind sensor bearings were failing causing the wind speed sensor to report lower than 
actual wind speeds when the winds were below 2 m/s.  The wind monitor was replaced on 
05/29/2007 but this failed to correct the problem.  Subsequently, the site was flooded and it 
took some time to re-establish normal operations.  The wind sensor was again replaced on 
10/30/2007.  After replacement the wind data from the SMOS compared more favorably to 
the co-located EBBR data.

• Time of Minimum Wind Speed(time_min_wspd)
• Minimum of Wind speed(min_wspd)

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

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

SGP/SMOS/E27 - Wind Direction data incorrect

The wind direction sensor was reporting a consistent value of ~360 degrees during this 
time period.  Co-located and nearby sensors were not in agreement with these values.

• Unit Vector Wind Direction(wdir)

• Unit Vector Wind Direction(wdir)

SGP/TWR/C1 - Southeast Side (10X) Temperature and RH Spikes

Southeast side 25 m and 60 m (10X datastreams) carriage connectors may not have been well 
connected; temperatures and relative humidities spiked sometimes.  This problem occurred 
after the carriages were lowered on 12/04.

• Relative humidity at 60 m(rh_60m)
• Relative humidity at 25 m(rh_25m)
• Vapor pressure at 25 m(vap_pres_25m)
• Temperature at 25 m(temp_25m)
• Vapor pressure at 60 m(vap_pres_60m)
• Temperature at 60 m(temp_60m)

• Vapor pressure at 25 m(vap_pres_25m)
• Vapor pressure at 60 m(vap_pres_60m)
• Standard Deviation of 25 m Temperature(sd_temp_25m)
• Temperature at 60 m(temp_60m)
• Standard Deviation of 60 m Vapor Pressure(sd_vap_pres_60m)
• Standard Deviation of 25 m Relative Humidity(sd_rh_25m)
• Relative humidity at 25 m(rh_25m)
• Relative humidity at 60 m(rh_60m)
• Standard Deviation of 60 m Relative Humidity(sd_rh_60m)
• Standard Deviation of 60 m Temperature(sd_temp_60m)
• Standard Deviation of 25 m Vapor Pressure(sd_vap_pres_25m)
• Temperature at 25 m(temp_25m)

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.

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

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

SGP/SMOS/E4 - 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)

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

SGP/SMOS/E6 - 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.

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

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

SGP/SMOS/E7 - Incorrect Offset for Wind Directon

An incorrect offset of 6 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/E27 - 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.

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

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

SGP/SMOS/E27 - Incorrect Offset for Wind Directon

An incorrect offset of 7 degrees was added to 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.

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

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

SGP/SMOS/E3 - Missing data

Data are missing and unrecoverable

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

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

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

SGP/SMOS/E5 - Missing data

Data are missing and unrecoverable

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

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

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

SGP/SMOS/E7 - Missing data

Data are missing and unrecoverable

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

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

SGP/SMOS/E8 - Missing Data

Data are missing and unrecoverable

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

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

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

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)

SGP/SMOS/E24 - Missing Data

Data are missing and unrecoverable

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

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

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

SGP/SMOS/E27 - Missing Data

Data are missing and unrecoverable

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

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

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

SGP/TWR/C1 - Missing data

Data are missing and unrecoverable.

• base time(base_time)
• Beam 0 Temperature(temp)
• Batter Voltage(vbat)
• Relative humidity inside the instrument enclosure(rh)
• Time offset of tweaks from base_time(time_offset)
• lon(lon)
• Vapor Pressure (kiloPascals)(vap_pres)
• Aspirator Flow Status (% of time with proper flow)(aspirator)
• Dummy altitude for Zeb(alt)
• lat(lat)

• Relative humidity inside the instrument enclosure(rh)
• Aspirator Flow Status (% of time with proper flow)(aspirator)
• lat(lat)
• lon(lon)
• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Standard Deviation of Relative Humidity(sd_rh)
• base time(base_time)
• Beam 0 Temperature(temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• Time offset of tweaks from base_time(time_offset)
• Dummy altitude for Zeb(alt)

• Dummy altitude for Zeb(alt)
• Maximum Vapor Pressure(max_vap_pres)
• lon(lon)
• Maximum Relative Humidity(max_rh)
• Time of Maximum Temperature(time_max_temp)
• Time offset of tweaks from base_time(time_offset)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• lat(lat)
• Minimum Relative Humidity(min_rh)
• time(time)
• Time of Minimum Temperature(time_min_temp)
• base time(base_time)
• Maximum Temperature(max_temp)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Minimum Temperature(min_temp)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Maximum Vapor Pressure(time_max_vap_pres)

SGP/TWR/C1 - Missing data

Data are missing and unrecoverable.

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)
• base time(base_time)
• Batter Voltage(vbat)
• Time offset of tweaks from base_time(time_offset)
• Beam 0 Temperature(temp)
• lat(lat)
• Aspirator Flow Status (% of time with proper flow)(aspirator)
• Dummy altitude for Zeb(alt)
• lon(lon)

• lat(lat)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Dummy altitude for Zeb(alt)
• Time of Minimum Temperature(time_min_temp)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Maximum Temperature(max_temp)
• Minimum Vapor Pressure(min_vap_pres)
• Time offset of tweaks from base_time(time_offset)
• Maximum Relative Humidity(max_rh)
• Minimum Relative Humidity(min_rh)
• base time(base_time)
• lon(lon)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• time(time)
• Minimum Temperature(min_temp)
• Time of Maximum Temperature(time_max_temp)

• Time offset of tweaks from base_time(time_offset)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Air Temperature(sd_temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• Beam 0 Temperature(temp)
• Standard Deviation of Relative Humidity(sd_rh)
• lon(lon)
• lat(lat)
• Aspirator Flow Status (% of time with proper flow)(aspirator)
• Dummy altitude for Zeb(alt)
• base time(base_time)
• Standard Deviation of Vapor Pressure(sd_vap_pres)

SGP/TWR/C1 - W Side of Tower lowered for maintenance

The west side tower carriages were lowered for maintenance and/or data are offscale during 
routine maintenance.

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)
• Beam 0 Temperature(temp)

• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

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

• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Minimum Temperature(time_min_temp)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Maximum Temperature(max_temp)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Relative Humidity(max_rh)
• Minimum Relative Humidity(min_rh)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Temperature(min_temp)
• Time of Maximum Temperature(time_max_temp)

• Maximum Vapor Pressure(max_vap_pres)
• Maximum Relative Humidity(max_rh)
• Time of Maximum Temperature(time_max_temp)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Relative Humidity(min_rh)
• Time of Minimum Temperature(time_min_temp)
• Maximum Temperature(max_temp)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Minimum Temperature(min_temp)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Maximum Vapor Pressure(time_max_vap_pres)

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