SGP/EBBR/E9 - Net Radiation Incorrect

There was water in the net radiometer.  

The net radiation data was incorrect.

• net_radiation_mv

• net_radiation

• latent_heat_flux
• net_radiation
• sensible_heat_flux

SGP/EBBR/E27 - Measurements offscale

All J-panel 4 measurements (soil heat flows, net radiation, air temperatures, home 
signals, pressure, vapor pressure) were sometimes offscale or otherwise incorrect.  J-Panel was 
replaced 20080326 correcting the problem.

• home_signal
• temp_air_bottom
• temp_air_top
• net_radiation
• vapor_pressure_bottom
• Barometric Pressure(atmos_pressure)
• vapor_pressure_top

• latent_heat_flux
• home_signal_30
• soil_heat_flow_4
• corr_soil_heat_flow_3
• Barometric Pressure(atmos_pressure)
• corr_soil_heat_flow_2
• temp_air_top
• soil_heat_flow_3
• corr_soil_heat_flow_5
• soil_heat_flow_2
• surface_soil_heat_flux_1
• soil_heat_flow_5
• surface_soil_heat_flux_2
• vapor_pressure_bottom
• corr_soil_heat_flow_1
• sensible_heat_flux
• surface_soil_heat_flux_4
• net_radiation
• corr_soil_heat_flow_4
• surface_soil_heat_flux_5
• home_signal_15
• vapor_pressure_top
• surface_soil_heat_flux_3
• soil_heat_flow_1
• temp_air_bottom

• home_signal
• temp_air_left
• temp_air_right
• soil_heat_flow_5_mv
• atmos_pressure_mv
• soil_heat_flow_1_mv
• soil_heat_flow_2_mv
• soil_heat_flow_4_mv
• soil_heat_flow_3_mv
• net_radiation_mv

SGP/EBBR/E7  - Wind Speed Frozen Stopped

Freezing rain stopped wind speed sensor.

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean

• wspd_arith_mean
• wspd_vec_mean

SGP/EBBR/E13 - Wind direction failure

The EBBR wind direction was stuck at 135 degrees; this reading indicates a failure of the 
sensor electronics.

• wdir_vec_mean_mv

• wdir_vec_std
• wspd_vec_mean
• wdir_vec_mean

• wdir_vec_mean
• wspd_vec_mean
• wdir_vec_std

SGP/EBBR/E20 - Wind Direction 50 Degrees High

The wind direction was offset high about 50 degrees.

• wdir_vec_mean

• wdir_vec_mean_mv

• wdir_vec_mean

SGP/EBBR/E4 - AEM Blown Fuse, Sensible and Latent Heat Fluxes Incorrect

The AEM Fuse was blown, the AEM was not switching, and thus sensible and latent heat flux 
measurements were incorrect.

• sensible_heat_flux
• bowen_ratio
• latent_heat_flux

SGP/EBBR/E18 - Soil Heat Flow #4 Offscale Low; Sensible and Latent Heat Flux Sometimes 
Incorrect

Soil heat flow #4 was sometimes lower than the lower limit imposed in the EBBR 
programming; sensible and latent heat flux were therefore deemed to be suspect during those times.  
The cause of the low values is not clear, but the values are not reasonable for the 
vegetation type at EF18.

• surface_soil_heat_flux_4
• latent_heat_flux
• soil_heat_flow_4
• corr_soil_heat_flow_4
• surface_soil_heat_flux_1
• sensible_heat_flux
• surface_soil_heat_flux_avg

• soil_heat_flow_4_mv

SGP/EBBR/E8 - Wind Direction Incorrect

The wind direction flatlined at times at 135 degrees (an indication of failed electronics) 
and at other times trended correctly with the co-located SMOS but differed from it by 15 
to 100 degrees.

• wdir_vec_std
• wdir_vec_mean

• wdir_vec_std
• wdir_vec_mean

• wdir_vec_mean_mv

SGP/EBBR/E2 - Net Radiation and Fluxes Incorrect

The net radiometer was tipped 37 degrees eastward, resulting in apparent
solar noon being 2.5 hours early.  The net radiation error results in incorrect sensible 
and latent heat fluxes.

• net_radiation

• net_radiation_mv

• net_radiation
• latent_heat_flux
• sensible_heat_flux

SGP/EBBR/E19 - Sensible and latent heat flux and net radiation incorrect

Net radiation was too large, resulting in sensible and latent heat fluxes being too large. 
 The cause of the problem is unknown.

• net_radiation

• net_radiation_mv

• sensible_heat_flux
• latent_heat_flux
• net_radiation

SGP/EBBR/E2 - AEM Ventilator Dangling - Sensible and Latent Heat Fluxes Incorrect

The right AEM ventilator unit with temperature and humidity sensors inside was dangling 
from the AEM.  Therefore, the gradients of temperature and relative humidity and thus 
sensible and latent heat flux are suspect for this period.  Often, the fluxes look reasonable.

• temp_trh_right_rr
• rh_right_mv
• temp_air_right

• vapor_pressure_bottom
• rh_bottom_fraction
• rh_top_fraction
• temp_trh_top
• vapor_pressure_top
• temp_air_bottom
• temp_air_top
• temp_trh_bottom

• bowen_ratio
• rh_top_fraction
• rh_bottom_fraction
• sensible_heat_flux
• temp_air_bottom
• temp_trh_top
• temp_trh_bottom
• temp_air_top
• latent_heat_flux
• vapor_pressure_bottom
• vapor_pressure_top

SGP/EBBR/E15 - Water in dome

There was water in the bottom dome of the net radiometer.

Net radiation, and sensible and latent heat fluxes were 
incorrect during the period.

• net_radiation_mv

• latent_heat_flux
• sensible_heat_flux
• net_radiation

• net_radiation

SGP/EBBR/E15 - Soil Heat Flow #4 Incorrect

Soil heat flux #4 produced too large a soil heat flow at times, resulting in it exceeding 
the qc check limit and causing sensible and latent heat fluxes to be incorrect.

• soil_heat_flow_4_mv

• corr_soil_heat_flow_4
• latent_heat_flux
• soil_heat_flow_4
• surface_soil_heat_flux_avg
• surface_soil_heat_flux_4
• sensible_heat_flux

SGP/EBBR/E18 - SHF #4 Measurements Too Low; Sensible and Latent Heat Fluxes Suspect

Soil heat flow #4 was replaced at the beginning of this period.  However, the soil heat 
flow measurements from that sensor were sometimes still lower than the lower limit imposed 
in the EBBR programming; sensible and latent heat flux were therefore deemed to be 
suspect during those times.  The cause of the low values could not be determined, but the 
values are not reasonable for the vegetation type at EF18.  

To remedy the situation, the soil heat flow sensor calibration was changed so that the 
sensor provided measurements that resembled the other four soil heat flow sensor 
measurements.

Soil heat flow measurements have been reasonable since the calibration change.

• surface_soil_heat_flux_4
• latent_heat_flux
• soil_heat_flow_4
• corr_soil_heat_flow_4
• sensible_heat_flux
• surface_soil_heat_flux_avg

• soil_heat_flow_4_mv

SGP/EBBR/E20 - Wind Direction Incorrect

The wind direction differed from the co-located SMOS by 50 deg during part of the stated 
period and the electronics had failed completely resulting in a constant 135 degrees for 
the following dates and times:
08/15 0230-0430, 0830-1530 and 09/03 0200-0300, 0500 - 09/10 2230.

Sensible and latent heat fluxes were not affected by this problem.

• wspd_vec_mean
• wdir_vec_std
• wdir_vec_mean

• wdir_vec_mean_mv

• wspd_vec_mean
• wdir_vec_std
• wdir_vec_mean

SGP/EBBR/E4 - Wind Direction 20 Degrees Low

The wind direction was too low by 20 degrees low.

• wdir_vec_mean

• wdir_vec_mean

• wdir_vec_mean_mv