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.

• Wind speed, 30-min intervals, standard deviation(sd_wspd)
• Wind speed, vector-averaged, at 10-m height, 30-min intervals(wspd_va)
• Mean Wind Speed(wspd)

• Mean Wind Speed(wspd)
• Wind speed, vector-averaged, at 10-m height, 30-min intervals(wspd_va)

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

SGP/SMOS/E1 - Failed temperature probe

The temperature probe was out of tolerance as it failed the 6-month calibration checks and 
subsequent bi-weekly checks.  The temperature values consistently were outside the 
manufacturers suggested uncertainty of 0.2 C.

• Temperature, air(temp)
• sd_vap_pres
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)

• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Minimum Temperature(time_min_temp)
• Time of Maximum Temperature(time_max_temp)
• Pressure, vapor, at 60-m height, 24-hr minimum(min_vap_pres)
• Temperature, air, at 60-m height, 24-hr maximum(max_temp)
• Pressure, vapor, at 60-m height, 24-hr maximum(max_vap_pres)
• Temperature, air, at 60-m height, 24-hr minimum(min_temp)

• Temperature, air(temp)
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)

SGP/SMOS/E13 - RH sensor failure

The T/RH sensor relative humidity data is suspect during this time.  Values from this 
sensor failed the 6-month check and subsequent bi-weekly checks.  The RH values were lower by 
larger than the manufacturer suggested uncertainty of 3%.

• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Pressure, vapor, at 60-m height, 24-hr minimum(min_vap_pres)
• Humidity, relative, at 60-m height, 24-hr maximum(max_rh)
• Time of Relative Humidity(time_min_rh)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Humidity, relative, at 60-m height, 24-hr minimum(min_rh)
• Time of Maximum Relative Humidity(time_max_rh)
• Pressure, vapor, at 60-m height, 24-hr maximum(max_vap_pres)

• Humidity, relative(rh)
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)

• Humidity, relative(rh)
• sd_vap_pres
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
• Humidity, relative, 30-min intervals, standard deviation(sd_rh)