SGP/SMOS/E1 - E1 SMOS Wind speed and direction values incorrect

Wind speed and direction sensors reporting incorrect values due to accumulation of ice on 
the sensors.

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

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

SGP/SMOS/E4 - E4 SMOS Wind Speed data incorrect

Wind speed sensor had ice accumulation causing data to be incorrect.

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

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

SGP/SMOS/E4 - E4 SMOS Missing Data Values

Data values missing due to loose power wire.

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

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

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

SGP/SMOS/E4 - E4 SMOS WIND DIRECTION AND SPEED DATA INCORRECT

Wind speed data and wind direction data incorrect due to ice accumulation on the sensors.

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

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

SGP/SMOS/E1 - E1 SMOS RH VALUES INCORRECT

Rh% values reported as -69999.  Reason unknown, suspect loose wire.

• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Relative Humidity(sd_rh)

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

SGP/SMOS/E1 - E1 SMOS ALL DATA VALUES OFF SCALE

All data values off scale due to routine maintenance.

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

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

SGP/SMOS/E4 - E4 SMOS DATA VALUES INCORRECT

All data values off-scale during routine maintenance.

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

• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Air Temperature(sd_temp)
• Hourly precipitation(precip)
• Snow Depth Sensor(snow_sen)
• barometric pressure(bar_pres)
• Relative humidity inside the instrument enclosure(rh)
• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)
• Snow Depth(snow)
• 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)
• Beam 0 Temperature(temp)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Barometric Pressure(sd_bar_pres)

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

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

SGP/SMOS/E1 - E1 SMOS RH% VALUES SUSPECT

RH% values approximately 10% high at values of 70% and higher.  Sensor replaced.

• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)

• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Relative humidity inside the instrument enclosure(rh)

• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Relative Humidity(sd_rh)

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

SGP/SMOS/E1 - E1 SMOS DATA VALUES OFF SCALE

All data values off-scale during replacement of T/RH probe.

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

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

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

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

SGP/SMOS/E1 - E1 SMOS SNOW DEPTH DATA INCORRECT

New program reads snow depth data when no sensor is in place.  Values near 1539 mm read as 
offset.

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• 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)

SGP/SMOS/E4 - E4 SMOS SNOW DEPTH DATA INCORRECT

New program reads snow depth when no sensor installed.  Values read are near 1539 mm.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

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

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E4 - E4 SNOW DEPTH DATA QUESTIONABLE

Snow depth data is questionable due to the sensor intermittently reporting values outside 
the manufacturers tolerances of +/- 25mm.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

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

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E4 - E4 SNOW DEPTH VALUES QUESTIONABLE

Snow Depth sensor intermittently reporting missing values -9999.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

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

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E1 - E1 SMOS SNOW DEPTH DATA QUESTIONABLE

Snow depth readings intermittently reported outside of the manufacturer's tolerance of +/- 
25mm.

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• 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)

SGP/SMOS/E1 - E1 SMOS SNOW DATA INCORRECT

Due to a programming error all snow depth data was reported as 0.  In effect no snow
depth data was collected.

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

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

SGP/SMOS/E1 - E1 SMOS SNOW DATA INCORRECT

Due to a programming error all snow depth data was reported as 0.  In effect, no snow 
depth data were collected.

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• 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)

SGP/SMOS/E4 - E4 SMOS SNOW DATA INCORRECT

Due to a programming error all snow depth data was reported as 0.  In effect, no snow 
depth data was collected.

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

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

SGP/SMOS/E4 - E4 SMOS SNOW DATA INCORRECT

Due to a programming error snow depth data were reported as 0.  In effect, no snow depth 
data were collected.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

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

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E1 - Incorrect Windspeed

The E1 SMOS was lowered to the surface on 5 OCT 1999 between 1600 and 1617 GMT
to install counterweights.

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

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

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

• null(Raw data stream - documentation not supported)

• null(Raw data stream - documentation not supported)

SGP/SMOS/E1 - Incorrect Windspeed

Apparently icing conditions caused incorrect wind speed data from the E1 SMOS
between 1200 and 2230 GMT on 29 JAN 99 and again between 2130 GMT on 30 JAN 99
and 0930 GMT om 1 FEB 99.

No other data seems to have been affected.

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

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

• null(Raw data stream - documentation not supported)

SGP/SMOS/E1 - Icing affected E1 SMOS wind speed

Icing conditions at E1 caused the wind speed to be questionable starting at
0600 GMT on 16 MAR 98.  By 1310 GMT, the icing caused the propellor to quit.
Recovery date and time unknown because power outage caused loss of data.  The
incorrect data and missing data are identified via other DQRs.

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

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

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

• null(Raw data stream - documentation not supported)

SGP/SMOS/E1 - Storage module and rain gauge damaged by lightning

The SMOS E1 storage module and rain gauge were damaged by lightning
at 0030 GMT.  All data were lost 8 JUL - 10 JUL, 2000 GMT.  Rain gauge
data were lost until the gauge was replaced on 24 JUL 96.

• Hourly precipitation(precip)

• Hourly precipitation(precip)

SGP/SMOS/E4 - E4 SMOS lowered to surface to install counterweights

The E4 SMOS was lowered to the surface on 6 OCT 1999 between 0835 and 0855 GMT 
while counterweights were installed.  All wind speed and direction data taken during this 
period should be flagged as incorrect.

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

• null(Raw data stream - documentation not supported)

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

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

• null(Raw data stream - documentation not supported)

SGP/SMOS/E4 - SNOW DEPTH DATA QUESTIONABLE

Snow depth data reported intermittently as -6999 and good.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

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

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E4 - SNOW DEPTH DATA QUESTIONABLE

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

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

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

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E4 - SNOW DEPTH DATA INCORRECT

Snow depth sensor was removed for the season.  Temperatures fell below 10 deg C causing 
the ingest program to accumulate erroneous readings.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

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

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E1 - SNOW DEPTH DATA INCORRECT

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

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• 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)

SGP/SMOS/E1 - Snow depth sensor removed; data reported as missing

The snow depth sensor was removed.  The program was changed to read -9999 into the data 
stream.

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• 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)

SGP/SMOS/E4 - 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.

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

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

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

SGP/SMOS/E1 - Wind Speed data incorrect due to icing

Wind speeds were artificially low due to icing on the sensor.

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

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

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

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

SGP/SMOS/E4 - Sensor failure--RH data bad

RH readings are questionable during high moisture conditions.  Readings frequently are 
above tolerance (104%) during saturated conditions. During non-saturated conditions the RH% 
readings are fine.

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)

• Time of Minimum Relative Humidity(time_min_rh)
• Maximum Relative Humidity(max_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Relative Humidity(min_rh)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Maximum Vapor Pressure(max_vap_pres)

• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)

• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)

SGP/SMOS/E4 - Sensor failure--RH data incorrect

RH readings are questionable during high moisture conditions.  Readings
   frequently are above tolerance (104%) during saturated conditions. During
   non-saturated conditions the RH% readings are fine.

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)

• Minimum Vapor Pressure(min_vap_pres)
• Maximum Relative Humidity(max_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Minimum Relative Humidity(min_rh)

SGP/SMOS/E4 - Sensor failure

RH values drop to zero during most of the period between 01/17 and 01/19.  Sensor was 
replaced.

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Relative Humidity(sd_rh)

• Maximum Relative Humidity(max_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Relative Humidity(min_rh)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Maximum Vapor Pressure(time_max_vap_pres)

SGP/SMOS/E4 - RH sensor intermittent

RH sensor intermittently failing during entire period.

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Relative Humidity(sd_rh)

• Time of Minimum Relative Humidity(time_min_rh)
• Maximum Relative Humidity(max_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Relative Humidity(min_rh)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Maximum Vapor Pressure(max_vap_pres)

• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Relative Humidity(sd_rh)

• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)

SGP/SMOS/E4 - RH sensor intermittent

RH sensor intermittently failing during entire period.  Sensor replaced 10/22/2003 @ 16:48 
GMT.

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Relative Humidity(sd_rh)

• Maximum Relative Humidity(max_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Relative Humidity(min_rh)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Maximum Vapor Pressure(time_max_vap_pres)

SGP/SMOS/E1 - 6-month Calibration Checks

During the time periods specified, the SMOS.E1 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.

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

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

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

SGP/SMOS/E1 - 6-month Calibration Checks

During the time periods specified, the SMOS.E1 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.

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

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

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

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

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

SGP/SMOS/E1 - 6-month Calibration Checks

During the time periods specified, the SMOS.E1 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.

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

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

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

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.

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

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

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

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.

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

• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Air Temperature(sd_temp)
• barometric pressure(bar_pres)
• Relative humidity inside the instrument enclosure(rh)
• Wind Speed (vector averaged)(wspd_va)
• 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)
• Beam 0 Temperature(temp)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Barometric Pressure(sd_bar_pres)

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

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

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

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.

• 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/E4 - RH Sensor failure

The RH sensor at this site dropped anomalously to zero on 4/21, and 
was consistently 25% lower than EBBR RH readings on 4/23.  Sensor was 
replaced 5/6.

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Relative Humidity(sd_rh)

• Maximum Relative Humidity(max_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Relative Humidity(min_rh)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Maximum Vapor Pressure(time_max_vap_pres)

SGP/SMOS/E4 - Ice storm froze wind speed sensor

Wind speed sensor frozen or affected by ice storm during the period
specified.

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

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

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

SGP/SMOS/E1 - Wind Data Suspect

Both wind speed and direction data are affected by icing during time period causing 
suspect readings.

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

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

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

SGP/SMOS/E4 - Wind Data Suspect

Wind speed and direction data suspect during time period due to icing.

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

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

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

SGP/SMOS/E4 - Reprocess: Wind direction offset

When the SGP.E4 SMOS tower was installed it was not aligned
properly resulting in a 7 degree offset.  On 3/9/05, the
datalogger program was modifed to correct for this offset.

• Unit Vector Wind Direction(wdir)

• Unit Vector Wind Direction(wdir)

SGP/SMOS/E4 - Reprocess: Wind direction offset

When the SGP.E4 SMOS tower was installed it was not aligned
properly resulting in a 7 degree offset.  On 3/9/05, the
datalogger program was modifed to correct for this offset.

• Unit Vector Wind Direction(wdir)

• Unit Vector Wind Direction(wdir)

SGP/SMOS/E1 - Sensor failure, wind direction data incorrect.

The wind sensor failed on direction.  Data show wind was consistently from one direction.

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

• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of wind direction(sd_deg)
• 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/E1 - Missing data

Data are missing and unrecoverable.

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

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

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

SGP/SMOS/E1 - Missing data

Data are missing and unrecoverable

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

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

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

SGP/SMOS/E4 - Missing Data

Data are missing and unrecoverable

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

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

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

SGP/SMOS/E4 - Missing data

Data are missing and unrecoverable

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

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

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

SGP/SMOS/E1 - RH values incorrect

Rh values incorrect due to failing sensor.

• Minimum Relative Humidity(min_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Maximum Relative Humidity(max_rh)
• Minimum Vapor Pressure(min_vap_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Minimum Relative Humidity(time_min_rh)

• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Standard Deviation of Relative Humidity(sd_rh)

• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)

SGP/SMOS/E1 - tower down for maintenance

The SMOS E1 tower was down for maintenance on 18 APR 96 between
1430 and 1530 GMT.  All wind, temperature, and humidity data 
taken during this period are either incorrect or questionable.  
The barometric pressure and rain data are OK.

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

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

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

SGP/SMOS/E4 - Data logger program changed

The E4 SMOS data logger program was changed on 1 MAY 96 at 1740 GMT in 
  order to improve the reliability of the snow depth measurements.  The 
  1800 GMT 30-minute averaged data was averaged for only 20 minutes.

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

SGP/SMOS/E1 - Storage module and rain gauge damaged by lightning

The SMOS E1 storage module and rain gauge were damaged by lightning
at 0030 GMT.  All data were lost 8 JUL - 10 JUL, 2000 GMT.  Rain gauge
data were lost until the gauge was replaced on 24 JUL 96.

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

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

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

SGP/SMOS/E1 - tower lowered for maintenance

The SMOS.E1 tower was lowered on 4 SEP 96 between 1500+ and 1600 GMT
for maintenance.  All wind data are incorrect.  Temperature and
humidity data may be incorrect.

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

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

• Relative humidity inside the instrument enclosure(rh)
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)
• Beam 0 Temperature(temp)
• Wind Speed (vector averaged)(wspd_va)

SGP/SMOS/E4 - Incorrect rain data from E4 SMOS

The rain gauge funnel was found to be clogged during 30 OCT 97 PM.  It was cleared at 1657 
GMT.  No clog was present during previous PM on 15 OCT 97.  Date and time that clog 
occurred is somewhere between 15 and 30 OCT 97.

• Hourly precipitation(precip)

• Hourly precipitation(precip)

SGP/E1/SMOS - Icing affected E1 SMOS wind speed

Icing conditions at E1 caused the wind speed to be questionable starting at
0600 GMT on 16 MAR 98.  By 1310 GMT, the icing caused the propellor to quit.
Recovery date and time unknown because power outage caused loss of data.

The questionable data are documented in another DQR.

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

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

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

• null(Raw data stream - documentation not supported)

SGP/SMOS/E4 - Icing affected E4 SMOS wind speed

Icing conditions at E4 caused the SMOS wind speed to be questionable starting
at 0900 GMT on 16 MAR 98.  By 2100 GMT, the icing caused the propellor to quit.
The ice melted and the sensor resumed reporting wind speed at about 1530 GMT
on 17 MAR 98.

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

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

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

• null(Raw data stream - documentation not supported)

SGP/E1/SMOS - Incorrect SMOS temperatures at E1

All E1 SMOS temp data on 27 MAR 1998 between 1400 and 1530 GMT was reported as
zero or missing during maintenance.

• Minimum Temperature(min_temp)
• Time of Minimum Temperature(time_min_temp)
• Maximum Temperature(max_temp)
• Time of Maximum Temperature(time_max_temp)

• Standard Deviation of Air Temperature(sd_temp)
• Beam 0 Temperature(temp)

• Beam 0 Temperature(temp)

• null(Raw data stream - documentation not supported)

• null(Raw data stream - documentation not supported)

SGP/SMOS - Questionable SMOS wind speeds at E1

Icing conditions caused questionable wind speed data from the E1 SMOS
between 0730 and 2130 GMT on 30 JAN 99.

No other data seems to have been affected.

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

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

• null(Raw data stream - documentation not supported)

SGP/SMOS - E1 SMOS down for tower replacement

The E1 SMOS was shut down from 13 MAY 1999 at 1300 GMT until 21 MAY 1999 at 1935 GMT 
while the tower was replaced.

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

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

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

• null(Raw data stream - documentation not supported)

• null(Raw data stream - documentation not supported)

SGP/SMOS/E4 - E4 SMOS lowered to surface to install counterweights

The E4 SMOS was lowered to the surface on 6 OCT 1999 between 0835 and 0855 GMT 
while counterweights were installed.  All temperature and humidity data taken 
during this period should be flagged as questionable.

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

• null(Raw data stream - documentation not supported)

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

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

• null(Raw data stream - documentation not supported)

SGP/SMOS - E1 SMOS lowered to surface to install couterweights

The E1 SMOS was lowered to the surface on 5 OCT 1999 between 1600 and 1617 GMT
to install counterweights.

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

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

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

• null(Raw data stream - documentation not supported)

• null(Raw data stream - documentation not supported)

SGP/SMOS/E4 - E4 SMOS down for tower replacement

The E4 SMOS was shut down from 17 MAY 1999 at 1500 GMT until 25 MAY 1999 at 2050 GMT 
while the tower was replaced.

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

• null(Raw data stream - documentation not supported)

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

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

• null(Raw data stream - documentation not supported)