SGP/EBBR/E13 - E13 EBBR Flux Data Incorrect

The Automatic Exchange Mechanism was stuck inbetween the top and bottom positions.  
Incorrect Bowen ratio, and latent and sensible heat fluxes resulted.

• temp_air_right
• temp_trh_right_rr
• rh_left_mv
• temp_trh_left_rr
• rh_right_mv
• temp_air_left

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• bowen_ratio
• temp_trh_top
• rh_bottom_fraction
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_bottom
• temp_air_bottom
• temp_trh_bottom
• rh_top_fraction
• temp_air_top

SGP/EBBR/E13 - E13 EBBR Soil Heat Flow #4 Incorrect

Soil Heat Flow #4 was large positive or negative, but always
incorrect during the indicated period. This resulted in overestimates
or underestimates of laetnt and sensible heat fluxes and average
soil heat flow.

• soil_heat_flow_4_mv

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• soil_heat_flow_4
• surface_soil_heat_flux_4
• corr_soil_heat_flow_4
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP EBBR E13 - E13 EBBR Soil T #4 Incorrect

Soil Temperature #4 floated around, causing average soil heat flow
to sometimes be too small (resulting too small a sensible heat flux and
too large a latent heat flux) or too large (resulting in too large a 
sensible heat flux and too small a latent heat flux).  Investigation of
g4 will indicate when these conditions occurred and the likely effect on
sensible and latent heat fluxes.

• soil_temp_4_rr

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_4
• energy_storage_change_4
• soil_temp_4
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP EBBR E13 - E13 EBBR Data Incorrect During 6 Month Checks

The data was incorrect during the 6 month checks.

• soil_temp_4_rr
• temp_air_right
• soil_heat_flow_1_mv
• soil_temp_1_rr
• soil_heat_flow_4_mv
• atmos_pressure_mv
• soil_moisture_4_r
• temp_reference_rr
• soil_moisture_2_r
• soil_moisture_1_rr
• wdir_vec_mean_mv
• rh_left_mv
• soil_temp_5_rr
• soil_moisture_4_rr
• temp_air_left
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• soil_moisture_3_rr
• net_radiation_mv
• soil_heat_flow_2_mv
• soil_moisture_1_r
• temp_trh_left_rr
• soil_moisture_5_rr
• soil_moisture_5_r
• soil_heat_flow_3_mv
• soil_temp_3_rr
• soil_temp_2_rr
• soil_moisture_2_rr
• temp_trh_right_rr
• soil_heat_flow_5_mv
• soil_moisture_3_r
• rh_right_mv

• temp_air_top
• rh_bottom_fraction
• vapor_pressure_top
• wdir_vec_std
• Barometric Pressure(atmos_pressure)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_bottom
• temp_reference
• temp_trh_top
• Wind speed vector mean(wspd_vec_mean)
• Radiation, net(net_radiation)
• rh_top_fraction
• vapor_pressure_bottom
• temp_air_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• energy_storage_change_4
• corr_soil_heat_flow_5
• energy_storage_change_5
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• soil_heat_flow_1
• soil_moisture_1
• soil_heat_flow_3
• soil_heat_flow_2
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• energy_storage_change_1
• soil_moisture_5
• soil_moisture_3
• energy_storage_change_3
• soil_moisture_4
• energy_storage_change_2
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Radiation, net(net_radiation)
• temp_trh_bottom
• temp_air_bottom
• surface_soil_heat_flux_5
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• temp_reference
• soil_heat_capacity_1
• soil_temp_2
• soil_heat_capacity_5
• soil_temp_1
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_temp_5
• soil_temp_4
• soil_temp_3
• wdir_vec_std
• bowen_ratio
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• surface_soil_heat_flux_1
• surface_soil_heat_flux_2
• rh_bottom_fraction
• vapor_pressure_bottom
• rh_top_fraction

SGP/EBBR/E13 - Reprocess: E13 EBBR Soil heat Flows #1 and #2 Incorrect

Soil Heat Flow probes #1 and #2 were incorrect during the
indicated period (and for some time afterward, to be covered in another
DQR).  Outputs from the probes were typically too large negative or 
too large positive.

• soil_heat_flow_2_mv
• soil_heat_flow_1_mv

• soil_heat_flow_2
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_1
• surface_soil_heat_flux_2
• corr_soil_heat_flow_2
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_flow_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• corr_soil_heat_flow_1

SGP EBBR E13 - E13 EBBR Data Incorrect

The 5 and 15 minute data was zero and thus the thirty minute data was
also incorrect.  This occurs after the restart of an EBBR system, in
this case after a recalibration unit changeout.

• home_signal
• soil_temp_4_rr
• temp_air_right
• soil_heat_flow_1_mv
• soil_temp_1_rr
• soil_heat_flow_4_mv
• atmos_pressure_mv
• temp_reference_rr
• soil_moisture_1_rr
• wdir_vec_mean_mv
• rh_left_mv
• soil_temp_5_rr
• soil_moisture_4_rr
• temp_air_left
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• soil_moisture_3_rr
• net_radiation_mv
• soil_heat_flow_2_mv
• temp_trh_left_rr
• soil_moisture_5_rr
• soil_heat_flow_3_mv
• soil_temp_3_rr
• soil_temp_2_rr
• soil_moisture_2_rr
• temp_trh_right_rr
• soil_heat_flow_5_mv
• rh_right_mv
• battery_voltage

• temp_air_top
• rh_bottom_fraction
• vapor_pressure_top
• wdir_vec_std
• Barometric Pressure(atmos_pressure)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_bottom
• temp_reference
• temp_trh_top
• Wind speed vector mean(wspd_vec_mean)
• Radiation, net(net_radiation)
• rh_top_fraction
• vapor_pressure_bottom
• home_signal
• temp_air_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• energy_storage_change_4
• energy_storage_change_5
• corr_soil_heat_flow_5
• corr_soil_heat_flow_2
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• corr_soil_heat_flow_1
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• soil_heat_flow_1
• soil_moisture_1
• soil_heat_flow_3
• soil_moisture_2
• soil_heat_flow_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_5
• energy_storage_change_1
• energy_storage_change_3
• soil_moisture_3
• soil_moisture_4
• energy_storage_change_2
• vapor_pressure_top
• home_signal_15
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Radiation, net(net_radiation)
• temp_trh_bottom
• home_signal_30
• temp_air_bottom
• surface_soil_heat_flux_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_air_top
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• temp_reference
• soil_heat_capacity_1
• soil_temp_2
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_temp_1
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_temp_5
• soil_temp_4
• soil_temp_3
• wdir_vec_std
• bowen_ratio
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• surface_soil_heat_flux_1
• surface_soil_heat_flux_2
• rh_bottom_fraction
• vapor_pressure_bottom
• rh_top_fraction

SGP EBBR E13 - E13 EBBR Left T/RH Probe Temperature Incorrect

The left T/RH Probe Temperature was often incorrect, causing the other indicated
measurements to be incorrect also.

• temp_trh_left_rr

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• bowen_ratio
• temp_trh_top
• temp_trh_bottom
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP EBBR E13 - E13 EBBR Left T/RH Probe Temperature Incorrect

The left T/RH Probe Temperature was often incorrect, causing the other indicated
measurements to be incorrect also.  

When the home30 signal had an offset, the top RH probe temperature was incorrect
but not the bottom RH probe temperature.

• temp_trh_left_rr

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• bowen_ratio
• temp_trh_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP EBBR E13 - E13 EBBR AEM in Mid Position

The AEM stopped before reaching the end of it's travel,
causing the home signals to be between 0 and 3 during 
much of this period (therefore the data is colored yellow).  

All gradient data, sensible heat flux, latent heat flux,
and the Bowen ratio are incorrect during this condition.

• rh_left_mv
• temp_trh_left_rr
• temp_air_left
• temp_air_right
• temp_trh_right_rr
• rh_right_mv

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

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_bottom
• temp_air_top
• bowen_ratio
• temp_trh_top
• rh_bottom_fraction
• vapor_pressure_bottom
• temp_trh_bottom
• rh_top_fraction

SGP EBBR E13 - E13 EBBR AEM Home 30 Offset

The AEM home30 signal is offset by approximately 25;
it appears that the electronics of the AEM is adding
the home15 and home30 voltages together when the AEM is
in the home30 position.

All gradient data, sensible heat flux, latent heat flux,
and the Bowen ratio are incorrect during this condition.

• rh_left_mv
• temp_trh_left_rr
• temp_air_left
• temp_air_right
• temp_trh_right_rr
• rh_right_mv

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

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_bottom
• temp_air_top
• bowen_ratio
• temp_trh_top
• rh_bottom_fraction
• vapor_pressure_bottom
• temp_trh_bottom
• rh_top_fraction

SGP EBBR E13 - E13 EBBR AEM Home 30 Offset or AEM in Mid Position

The AEM stopped before reaching the end of it's travel,
causing the home signals to be between 0 and 3 during 
part of this period.

The AEM home30 signal is offset by approximately 25 
during part of this period; it appears that the electronics 
of the AEM is adding the home15 and home30 voltages 
together when the AEM is in the home30 position.

All gradient data, sensible heat flux, latent heat flux,
and the Bowen ratio are incorrect during these conditions.

• rh_left_mv
• temp_trh_left_rr
• temp_air_left
• temp_air_right
• temp_trh_right_rr
• rh_right_mv

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

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_bottom
• temp_air_top
• bowen_ratio
• temp_trh_top
• rh_bottom_fraction
• vapor_pressure_bottom
• temp_trh_bottom
• rh_top_fraction

SGP EBBR E13 - E13 EBBR Left Air Temperature Incorrect

This condition occurred most of the time during the 
indicated period (hence color yellow).

The left air temperature was incorrect only when the AEM
was in the home 30 position.  This only affected the bottom
air temperature calculation.  However, it made the latent
heat flux, sensible heat flux, and Bowen ratio incorrect.

The sensor was improperly inserted into the aspirator shield
and was pinched between the shield and the T/RH probe. When
the AEM was in the home30 position, the aspirator hose
position may have caused the sensor to short to ground.

• temp_air_left

• temp_air_bottom

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• bowen_ratio
• temp_air_bottom
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP EBBR E13 - E13 EBBR Left Air Temperature Incorrect

This condition occurred most of the time during the 
indicated period (hence color yellow).

The left air temperature was incorrect only when the AEM
was in the home 30 position.  This only affected the bottom
air temperature calculation.  However, it made the latent
heat flux, sensible heat flux, and Bowen ratio incorrect.

The sensor was improperly inserted into the aspirator shield
and was pinched between the shield and the T/RH probe. When
the AEM was in the home30 position, the aspirator hose
position may have caused the sensor to short to ground.

• temp_air_left

• temp_air_bottom

• bowen_ratio
• temp_air_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E13 - Reprocess: E13 EBBR Soil Temperature #4 Incorrect

Soil Temperature #4 was often incorrect, typically too large negative,
during this period, causing other measurements calculated with
it to be incorrect also. This was caused by a bad multiplexor channel,
which was discovered by the vendor during recalibration of the unit
later.

• soil_temp_4_rr

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_4
• energy_storage_change_4
• soil_temp_4
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E13 - Reprocess: E13 EBBR Soil Temperature #4 Incorrect

Soil Temperature #4 was often incorrect, typically too large negative,
during this period, causing other measurements calculated with
it to be incorrect also. This was caused by a bad multiplexor channel,
which was discovered by the vendor during recalibration of the unit
later.

• soil_temp_4_rr

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_4
• energy_storage_change_4
• soil_temp_4
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E13 - Left T/RH Probe Temperature Incorrect

During much of the indicated period the Left T/RH Temperature was
incorrect.  Because the home signal was between 0 and 3, the 
temperature was incorrect when the AEM was at the bottom position,
but was correct when the AEM was at the top position.  This was caused by
a short created when the sensor was mispositioned in the aspirator
housing and enough strain on the cable for it to bring it into contact
with the housing in the bottom position.

• temp_trh_left_rr

• temp_trh_bottom
• vapor_pressure_bottom

• vapor_pressure_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• bowen_ratio
• temp_trh_bottom
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E13 - Left Humidity Probe Temperature Incorrect

The left humidity probe temperature was incorrect
much of the time, as was the top humidity temperature and
vapor pressure.

• temp_trh_left_rr

• temp_trh_top
• vapor_pressure_top

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• bowen_ratio
• temp_trh_top
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E13 - Data incorrect during maintenance

The 5, 15, and 30 minute measurements were zero or
offscale at 2200 GMT only.  Electronic connections
were being checked at that time.

• home_signal
• soil_temp_4_rr
• temp_air_right
• soil_heat_flow_1_mv
• soil_temp_1_rr
• soil_heat_flow_4_mv
• atmos_pressure_mv
• temp_reference_rr
• soil_moisture_1_rr
• wdir_vec_mean_mv
• rh_left_mv
• soil_temp_5_rr
• soil_moisture_4_rr
• temp_air_left
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• soil_moisture_3_rr
• net_radiation_mv
• soil_heat_flow_2_mv
• temp_trh_left_rr
• soil_moisture_5_rr
• soil_heat_flow_3_mv
• soil_temp_3_rr
• soil_temp_2_rr
• soil_moisture_2_rr
• temp_trh_right_rr
• soil_heat_flow_5_mv
• rh_right_mv
• battery_voltage

• temp_air_top
• rh_bottom_fraction
• vapor_pressure_top
• wdir_vec_std
• Barometric Pressure(atmos_pressure)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_bottom
• temp_reference
• temp_trh_top
• Wind speed vector mean(wspd_vec_mean)
• Radiation, net(net_radiation)
• rh_top_fraction
• vapor_pressure_bottom
• home_signal
• temp_air_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• energy_storage_change_4
• energy_storage_change_5
• corr_soil_heat_flow_5
• corr_soil_heat_flow_2
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• corr_soil_heat_flow_1
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• soil_heat_flow_1
• soil_moisture_1
• soil_heat_flow_3
• soil_moisture_2
• soil_heat_flow_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_5
• energy_storage_change_1
• energy_storage_change_3
• soil_moisture_3
• soil_moisture_4
• energy_storage_change_2
• vapor_pressure_top
• home_signal_15
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Radiation, net(net_radiation)
• temp_trh_bottom
• home_signal_30
• temp_air_bottom
• surface_soil_heat_flux_5
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• temp_reference
• soil_heat_capacity_1
• soil_temp_2
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_temp_1
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_temp_5
• soil_temp_4
• soil_temp_3
• wdir_vec_std
• bowen_ratio
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• surface_soil_heat_flux_1
• surface_soil_heat_flux_2
• rh_bottom_fraction
• vapor_pressure_bottom
• rh_top_fraction

SGP/EBBR/E13 - Data Incorrect During 6 Month Checks

The measurements were incorrect during the 6 month checks.

• home_signal
• soil_temp_4_rr
• temp_air_right
• soil_heat_flow_1_mv
• soil_temp_1_rr
• soil_heat_flow_4_mv
• atmos_pressure_mv
• temp_reference_rr
• soil_moisture_1_rr
• wdir_vec_mean_mv
• rh_left_mv
• soil_temp_5_rr
• soil_moisture_4_rr
• temp_air_left
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• soil_moisture_3_rr
• net_radiation_mv
• soil_heat_flow_2_mv
• temp_trh_left_rr
• soil_moisture_5_rr
• soil_heat_flow_3_mv
• soil_temp_3_rr
• soil_temp_2_rr
• soil_moisture_2_rr
• temp_trh_right_rr
• soil_heat_flow_5_mv
• rh_right_mv
• battery_voltage

• temp_air_top
• rh_bottom_fraction
• vapor_pressure_top
• wdir_vec_std
• Barometric Pressure(atmos_pressure)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_bottom
• temp_reference
• temp_trh_top
• Wind speed vector mean(wspd_vec_mean)
• Radiation, net(net_radiation)
• rh_top_fraction
• vapor_pressure_bottom
• home_signal
• temp_air_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• energy_storage_change_4
• energy_storage_change_5
• corr_soil_heat_flow_5
• corr_soil_heat_flow_2
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• corr_soil_heat_flow_1
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• soil_heat_flow_1
• soil_moisture_1
• soil_heat_flow_3
• soil_moisture_2
• soil_heat_flow_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_5
• energy_storage_change_1
• energy_storage_change_3
• soil_moisture_3
• soil_moisture_4
• energy_storage_change_2
• vapor_pressure_top
• home_signal_15
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Radiation, net(net_radiation)
• temp_trh_bottom
• home_signal_30
• temp_air_bottom
• surface_soil_heat_flux_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_air_top
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• temp_reference
• soil_heat_capacity_1
• soil_temp_2
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_temp_1
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_temp_5
• soil_temp_4
• soil_temp_3
• wdir_vec_std
• bowen_ratio
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• surface_soil_heat_flux_1
• surface_soil_heat_flux_2
• rh_bottom_fraction
• vapor_pressure_bottom
• rh_top_fraction

SGP/EBBR/E13 - 6 Month Checks

The indicated measurements were incorrect during the 6 month checks.

• temp_air_right
• temp_air_left

• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_top
• rh_bottom_fraction
• temp_air_bottom
• temp_trh_bottom
• rh_top_fraction
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• temp_trh_top
• vapor_pressure_bottom

• bowen_ratio
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_trh_top
• rh_bottom_fraction
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_bottom
• temp_air_bottom
• temp_trh_bottom
• rh_top_fraction
• temp_air_top

SGP/EBBR/E13 - Reprocess: Soil Heat Flow #1 Incorrect

Soil Heat Flow #1 was incorrect during the indicated period.

Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can 
be recalculated using the remaining good sets of soil sensors as follows:
   ave_shf = (g2 + g3 + g4 + g5)/4
   e = -(q + ave_shf)/(1 + bowen)
   h = -(q + e + ave_shf)

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_1
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_flow_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• corr_soil_heat_flow_1

SGP/EBBR/E13 - Reprocess: Soil Heat Flow #2 Incorrect

Soil Heat Flow #2 was incorrect during the indicated period.

Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can 
be recalculated using the remaining good sets of soil sensors as follows:
   ave_shf = (g1 + g3 + g4 + g5)/4
   e = -(q + ave_shf)/(1 + bowen)
   h = -(q + e + ave_shf)

• soil_heat_flow_2
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_2
• corr_soil_heat_flow_2
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E13 - Wrong CR10 Program Installed

An old version 4 program was installed on 5 Oct 01 instead of the correct version 8 
program.
All of the indicated measurements are suspect.

• Raw data stream - documentation not supported

• soil_moisture_1_rr
• wdir_vec_mean_mv
• rh_left_mv
• soil_temp_5_rr
• soil_moisture_4_rr
• temp_air_left
• soil_temp_4_rr
• temp_air_right
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• soil_moisture_3_rr
• net_radiation_mv
• soil_heat_flow_1_mv
• soil_heat_flow_2_mv
• soil_temp_1_rr
• temp_trh_left_rr
• soil_moisture_5_rr
• soil_heat_flow_4_mv
• soil_heat_flow_3_mv
• soil_temp_3_rr
• atmos_pressure_mv
• soil_temp_2_rr
• soil_moisture_2_rr
• temp_trh_right_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• rh_right_mv

• temp_air_top
• temp_reference
• temp_trh_top
• Wind speed vector mean(wspd_vec_mean)
• rh_bottom_fraction
• Radiation, net(net_radiation)
• rh_top_fraction
• vapor_pressure_top
• wdir_vec_std
• vapor_pressure_bottom
• Barometric Pressure(atmos_pressure)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_bottom
• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• energy_storage_change_4
• corr_soil_heat_flow_5
• energy_storage_change_5
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• surface_soil_heat_flux_5
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_trh_top
• soil_heat_flow_1
• soil_moisture_1
• soil_heat_flow_3
• soil_moisture_2
• soil_heat_flow_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_5
• energy_storage_change_1
• energy_storage_change_3
• soil_moisture_3
• soil_moisture_4
• energy_storage_change_2
• Barometric Pressure(atmos_pressure)
• temp_reference
• vapor_pressure_top
• soil_heat_capacity_1
• soil_temp_2
• soil_heat_capacity_5
• soil_temp_1
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_temp_5
• soil_temp_4
• soil_temp_3
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• bowen_ratio
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• surface_soil_heat_flux_1
• surface_soil_heat_flux_2
• rh_bottom_fraction
• vapor_pressure_bottom
• Radiation, net(net_radiation)
• temp_trh_bottom
• rh_top_fraction

SGP/EBBR/E13 - Wind Direction Incorrect

The wind direction and sigma_wd was near zero for the indicated times.

• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)

• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)

SGP/EBBR/E13 - AEM Hung up

The automatic exchange mechanism hung numerous times, but with various different 
measurements of home signals.  In all cases, temperature and humidity gradients were incorrect; 
thus the Bowen ratio, sensible heat flux, and latent heat flux are incorrect for the 
indicated periods.  Even when the home 15 and 30 signals were different (but too high) the 
measurements were incorrect because the program keys off of the home signals, which must be 
in the proper ranges.

• temp_air_right
• temp_air_left

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

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• bowen_ratio
• temp_trh_top
• rh_bottom_fraction
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_bottom
• temp_air_bottom
• temp_trh_bottom
• rh_top_fraction
• temp_air_top

SGP/EBBR/E13 - Reprocess: Soil Heat Flow #1 and #2 Incorrect

Soil Heat Flow #1 and #2 were incorrect during the indicated period.

Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can 
be recalculated using the remaining good sets of soil sensors as follows:
   ave_shf = (g3 + g4 + g5)/3
   e = -(q + ave_shf)/(1 + bowen)
   h = -(q + e + ave_shf)

• soil_heat_flow_2
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_1
• surface_soil_heat_flux_2
• corr_soil_heat_flow_2
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_flow_1
• corr_soil_heat_flow_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR 
Header

The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the 
EBBR 30 minute netcdf header have been incorrect from the beginning 
of processing the data into netcdf files.  The correct units are 
MJ/m^3/C.

This does not affect the data quality.

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_5
• soil_heat_capacity_4

• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_1

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_1

• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_5
• soil_heat_capacity_3
• soil_heat_capacity_4

• soil_heat_capacity_5
• soil_heat_capacity_2
• soil_heat_capacity_1
• soil_heat_capacity_4
• soil_heat_capacity_3

• soil_heat_capacity_2
• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_4
• soil_heat_capacity_5
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_1

• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5
• soil_heat_capacity_1

• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_1

SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR 
Header

The units for Soil Heat Capacity (cs1, cs2, cs3, cs4,
cs5) in the EBBR 30 minute netcdf header have been 
incorrect from the beginning of processing the data
into netcdf files.  The correct units are MJ/m^3/C.
   
This does not affect the data quality.

(NOTE: The actual begin date of some of these data streams
 is as early as 7/4/93.  This DQR applies to all 30m EBBR
 data.)

• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_1

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_5
• soil_heat_capacity_3
• soil_heat_capacity_4

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_2
• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_1

• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2

• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_1

• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5
• soil_heat_capacity_1

SGP/EBBR/E13 - Data Incorrect during 6 month checks

Some of the measurements are incorrect during the 6 month checks.

• temp_air_right
• temp_air_left

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

• bowen_ratio
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_trh_top
• rh_bottom_fraction
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_bottom
• temp_air_bottom
• temp_trh_bottom
• rh_top_fraction
• temp_air_top

SGP/EBBR/E13 - Wind Speed Stalling at Low Speeds

Perhaps because of excessive bearing wear, the wind speed sensor
had a high starting threshhold with wind speeds below about 2 m/s.
Wind speed measurements at all speeds were probably too low.

• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)

SGP/EBBR/E13 - REPROCESS: Soil Moisture #1 Offset1

The wrong offset (1.4656) was used in the calibration coefficients for
Soil Moisture Probe #1. The correct offset is 14.656.

Sensible and Latent Heat Flux measurements are not significantly affected.

• soil_moisture_1

SGP/EBBR/E13 - AEM Jung between Home Positions

When the AEM (Automatic Exchange Mechanism) is hung 
inbetween home positions, the gradients of temperature and 
relative humidity, and thus sensible and latent heat fluxes, 
are incorrect.

• temp_air_right
• temp_air_left

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

• bowen_ratio
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_trh_top
• rh_bottom_fraction
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_bottom
• temp_air_bottom
• temp_trh_bottom
• rh_top_fraction
• temp_air_top

SGP/EBBR/E13 -  6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

• rh_left_mv
• temp_trh_left_rr
• temp_air_left
• temp_air_right
• temp_trh_right_rr
• rh_right_mv

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

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_bottom
• temp_air_top
• bowen_ratio
• temp_trh_top
• rh_bottom_fraction
• vapor_pressure_bottom
• temp_trh_bottom
• rh_top_fraction

SGP/EBBR/E13  - Water In Net Radiometer; Surface Fluxes are Incorrect

The net radiometer top dome was punctured by migrating birds.  This alone does not cause 
incorrect net radiation measurements.  However, when it subsequently rains, water collects 
in the bottom dome, causing the net radiation measurements to be too large during the 
day and too small at night.

• net_radiation_mv

• Radiation, net(net_radiation)

• Radiation, net(net_radiation)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E13 - Improved EBBR CR10 Program

Effective 20050331.2100, the EBBR.E13 CR10 program was revised to improve the quality of 
the primary measurements as follows:

1) An RMS procedure is used to determine max and min limits of acceptable soil heat flow.  
This is applied to the individual soil sets.  Measurements outside the limits are 
rejected and the measurements within the limits are used to calculate the average soil heat flow.

2) Max and min limits are used to determine incorrect values of net radiation, sensible 
heat flux (h), latent heat flux (e), and automatic exchange mechanism (AEM) signal.  If AEM 
signal is outside the limits, h and e are set to 999s.  If net radiation is outside the 
limits, h and e are set to 999s. If h or e are outside the limits, h and e are set to 999s.

Virtually no incorrect soil measurement will affect the primary measurements of h and e.

By setting h and e to 999s, it can be easily seen that the primary variables are 
incorrect; no other interpretation is possible.

Prior to 20050331, the improved CR10 program was NOT in effect.  DQRs have been submitted 
for known instances of incorrect soil measurements which affected the quality of the 
primary measurements of h and e.

Note: the DQR begin date is the begin date of the sgp30ebbrE13.b1 data stream.  The 
earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. 
sgp30ebbrE13.a1).

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E13 - Wind Direction Dependency of Surface Fluxes and General Data Quality 
Information

Beginning in FY2006, Data Quality Reports are not written for missing 
data or for situations when qc flags clearly show that the data is 
incorrect (this is true for most of the conditions listed below).  
DQRs are written for periods when data is incorrect, when the situation 
is not represented by qc flags in the data, and it's not obvious that 
the data should have been flagged as incorrect.

The EBBR data is only useful for particular wind directions at each 
Extended Facility.  Please use the following resources to help in 
interpreting the EBBR data.

1) qc flags in the EBBR data.

2) Instrument Mentor Monthly Summaries (IMMS) at http://www.db.arm.gov/IMMS/

3) SGP EF Surface Conditions Observations (EFSCO) at 
http://198.124.96.210:591/sfc_cond1/default.htm

4) Surface fluxes are valid only for the following wind directions
(in degrees):

0-52, 142-194, 328-360

Note that there are wind directions at most sites for which the fetch
is insufficient and therefore EBBR data is invalid.  Appropriate 
fetch was determined from a 1/40 measurement height to fetch ratio, 
resulting in a required minimum fetch of 120 m.  Particular attention 
should be paid to the limited valid wind directions for the Central 
Facility EBBR.  The surface vegetation type for the EBBRs is grazed 
or ungrazed grassland (refer to the EFSCO for state).

5) Some conditions that commonly cause the EBBR primary measurements to 
be incorrect or missing follow:

a) Sensible and latent heat fluxes are not accurate during times when 
the Automatic Exchange Mechanism (AEM) is not functioning properly.  
The AEM switches the gradient measuring instrumentation between the 
top and bottom positions every 15 minutes; this reduces the effects of 
instrument offsets.  Sometimes the AEM does not reach it's full extent 
of travel, resulting in the home signal being zero.  

b) Sensible and latent heat fluxes are sometimes incorrect when surface 
soil heat flow is out of range, as seen in the average soil heat flux 
(ave_shf).

c) Very light winds may be seen at nights for brief periods. Wind 
direction flops around a lot during low wind conditions (< 1.5 m/s) 
and is often unreliable during those periods.

d) Missing data periods occur at times; this is usually a site data 
system collection/communication problem; it can also occur during 
replacement of the system with a newly calibrated unit.  Missing data 
is sometimes filled in later from manual or automatic re-collection of 
the data.

• Wind speed vector mean(wspd_vec_mean)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_4
• home_signal_30
• corr_soil_heat_flow_3
• energy_storage_change_4
• corr_soil_heat_flow_5
• energy_storage_change_5
• corr_soil_heat_flow_2
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• corr_soil_heat_flow_1
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• surface_soil_heat_flux_5
• lon
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_air_top
• temp_trh_top
• base_time
• soil_heat_flow_1
• soil_heat_flow_3
• soil_moisture_1
• soil_heat_flow_2
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• energy_storage_change_1
• soil_moisture_5
• soil_moisture_3
• energy_storage_change_3
• energy_storage_change_2
• soil_moisture_4
• time_offset
• Barometric Pressure(atmos_pressure)
• temp_reference
• vapor_pressure_top
• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_temp_2
• soil_heat_capacity_4
• soil_temp_1
• soil_heat_capacity_3
• soil_heat_capacity_2
• home_signal_15
• soil_temp_5
• soil_temp_4
• soil_temp_3
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• bowen_ratio
• surface_soil_heat_flux_3
• alt
• surface_soil_heat_flux_4
• surface_soil_heat_flux_1
• surface_soil_heat_flux_2
• rh_bottom_fraction
• lat
• vapor_pressure_bottom
• Radiation, net(net_radiation)
• temp_trh_bottom
• rh_top_fraction