SGP/EBBR/E22 - EBBR E22 Wind Speed Iced

The anemometer was frozen stopped by freezing rain.  Indicated data is incorrect.

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed arithmetic mean(wspd_arith_mean)

SGP EBBR E22 - E22 EBBR Data Incorrect During Logger Replacement

The data was incorrect during replacement of the logger.

• Raw data stream - documentation not supported

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

• vapor_pressure_bottom
• temp_trh_top
• Radiation, net(net_radiation)
• rh_bottom_fraction
• temp_trh_bottom
• home_signal
• Wind speed arithmetic mean(wspd_arith_mean)
• temp_reference
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_top
• Wind direction vector mean(wdir_vec_mean)
• temp_air_top
• rh_top_fraction
• Atmospheric pressure(atmos_pressure)
• temp_air_bottom

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

SGP EBBR E22 - E22 EBBR Soil Moisture Lower Than Measurement Capability

The indicated measurements were incorrect because soil moisture dropped below (sometimes 
even negative) the ability of the probes to measure it.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_moisture_5
• energy_storage_change_1
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

• soil_moisture_4_r
• soil_moisture_3_r
• soil_moisture_1_rr
• soil_moisture_1_r
• soil_moisture_5_r
• soil_moisture_3_rr
• soil_moisture_4_rr
• soil_moisture_2_r
• soil_moisture_5_rr
• soil_moisture_2_rr

SGP EBBR E22 - E22 EBBR Soil Moisture #3 Lower Than Can Be Measured

The soil moisture was too low to be measured correctly by probe #3.

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• soil_heat_capacity_3
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• energy_storage_change_3
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_3
• soil_moisture_3

• soil_moisture_3_rr
• soil_moisture_3_r

SGP EBBR E22 - E22 EBBR Net Radiation Incorrect

Water inside the domes of the net radiometer caused measurements from it to be incorrect.  
Calculated latent and sensible heat fluxes were therefore incorrect also.

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

• Radiation, net(net_radiation)

• net_radiation_mv

SGP EBBR E22 - E22 EBBR Data Incorrect During 6 Month Checks

The data was incorrect during the 6 month checks.

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

• vapor_pressure_bottom
• temp_trh_top
• Radiation, net(net_radiation)
• rh_bottom_fraction
• temp_trh_bottom
• Wind speed arithmetic mean(wspd_arith_mean)
• temp_reference
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_top
• Wind direction vector mean(wdir_vec_mean)
• temp_air_top
• rh_top_fraction
• Atmospheric pressure(atmos_pressure)
• temp_air_bottom

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

SGP EBBR E22 - E22 EBBR 30 Minute Data Incorrect After Missing Data

Complete soil temperature information is not available
when the data is missing for the previous half hour.
Since soil temperature difference with time cannot be 
computed properly, the selected calculated quantities are incorrect.

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_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)
• energy_storage_change_1
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

SGP/EBBR/E22 - 6 Month Checks

The indicated measurements were incorrect during the 6 month checks.

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

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

• temp_air_left
• temp_air_right

SGP/EBBR/E22 - All Measurements Zero

The measurements are often all zero the first period after a CR10 restart, as occurred 
here.

• Raw data stream - documentation not supported

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

• vapor_pressure_bottom
• temp_trh_top
• Radiation, net(net_radiation)
• rh_bottom_fraction
• temp_trh_bottom
• home_signal
• Wind speed arithmetic mean(wspd_arith_mean)
• temp_reference
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_top
• Wind direction vector mean(wdir_vec_mean)
• temp_air_top
• rh_top_fraction
• Atmospheric pressure(atmos_pressure)
• temp_air_bottom

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

SGP/EBBR/E22 - AEM Hung or High Home Signals

The automatic exchange mechanism hung some times and continued to switch at other times, 
although with high home signal values.  If home signal values are not in the proper 
ranges, the gradient calculation is not performed properly by the CR10 program.  Affected flux 
measurements cannot be recalculated.

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

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

• temp_air_left
• temp_air_right

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/E22 - Data Incorrect during 6 month checks

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

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

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

• temp_air_left
• temp_air_right

SGP/EBBR/E22 - AEM Hung 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.

There is no work-around to this problem.

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

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

• temp_air_left
• temp_air_right

SGP/EBBR/E22 - Water inside Broken Net Rad Dome

The net radiation measurement is incorrect. Measurements 
calculated using net radiation are also incorrect.  

No work-around is possible for this situation.

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

• Radiation, net(net_radiation)

SGP/EBBR/E22 - home30 too large

The home30 measurements sometimes exceeded 34.9999, resulting in the
qc flag being set.

However, this does not create any data quality issues.  The qc flag is
set just to provide an alert that the automatic exchange mechanism may have a problem; in 
this case data was not affected.

An electronics repair solved the problem.

• home_signal_30

• home_signal

• home_signal

SGP/EBBR/E22 -  6 Month Checks

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

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

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

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

SGP/EBBR/E22 - AEM Hung Inbetween Home Positions

The AEM was hung inbetween home positions.

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

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

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

SGP/EBBR/E22 - AEM Home Signals Too High

The AEM home signals were too large at times during the indicated period;
it has been determined by the vendor that this is usually caused by electrical noise in 
the vicinity. When the 30 minute data shows a home 30 signal of 35 or more, the bowen 
ratio, and sensible and latent heat flux 
measurements are incorrect 

Removing the jumper between 4L and AG on the CR10 and adding a jumper to Multiplexer 2, 
Set 6, between L1 and L2 fixed the problem.  The
vendor intends to make this modification to all EBBR systems as they return
for re-calibration.

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

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

SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problems

Data are missing due to power failures caused by an ice storm
and resulting system/instrument clock problems.

• alt
• Mean Wind Speed(wspd)
• lon
• base_time
• Humidity, relative, 30-min intervals, standard deviation(sd_rh)
• Temperature, air(temp)
• Unit Vector Wind Direction(wdir)
• time_offset
• sd_vap_pres
• sd_wdir
• Pressure, atmospheric, constant value of model level, RUC model output(pres)
• sd_pres
• Humidity, relative(rh)
• vbat
• Temperature, air, 30-min intervals, standard deviation(sd_temp)
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
• lat

• Raw data stream - documentation not supported

• Temperature, air, 30-min intervals, standard deviation(sd_temp)
• Temperature, air(temp)
• sd_vap_pres
• vbat
• lon
• alt
• time_offset
• Humidity, relative(rh)
• base_time
• sd_wdir
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
• sd_pres
• Unit Vector Wind Direction(wdir)
• Humidity, relative, 30-min intervals, standard deviation(sd_rh)
• lat
• Mean Wind Speed(wspd)
• Pressure, atmospheric, constant value of model level, RUC model output(pres)

• sd_wdir
• sd_pres
• Mean Wind Speed(wspd)
• base_time
• lon
• Humidity, relative, 30-min intervals, standard deviation(sd_rh)
• vbat
• Temperature, air(temp)
• Unit Vector Wind Direction(wdir)
• Pressure, atmospheric, constant value of model level, RUC model output(pres)
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
• sd_vap_pres
• Temperature, air, 30-min intervals, standard deviation(sd_temp)
• Humidity, relative(rh)
• lat
• time_offset
• alt

• Raw data stream - documentation not supported

• Humidity, relative(rh)
• base_time
• sd_pres
• Humidity, relative, 30-min intervals, standard deviation(sd_rh)
• vbat
• Temperature, air, 30-min intervals, standard deviation(sd_temp)
• sd_wdir
• Unit Vector Wind Direction(wdir)
• lon
• Mean Wind Speed(wspd)
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
• Pressure, atmospheric, constant value of model level, RUC model output(pres)
• Temperature, air(temp)
• time_offset
• alt
• sd_vap_pres
• lat

• Raw data stream - documentation not supported

• Mean Wind Speed(wspd)
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
• Pressure, atmospheric, constant value of model level, RUC model output(pres)
• sd_vap_pres
• lat
• Humidity, relative(rh)
• Unit Vector Wind Direction(wdir)
• Temperature, air(temp)
• time_offset
• Temperature, air, 30-min intervals, standard deviation(sd_temp)
• lon
• Humidity, relative, 30-min intervals, standard deviation(sd_rh)
• sd_wdir
• vbat
• alt
• base_time
• sd_pres

• sd_wdir
• lat
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
• base_time
• Humidity, relative(rh)
• Pressure, atmospheric, constant value of model level, RUC model output(pres)
• Temperature, air, 30-min intervals, standard deviation(sd_temp)
• time_offset
• Temperature, air(temp)
• sd_pres
• lon
• vbat
• sd_vap_pres
• Unit Vector Wind Direction(wdir)
• alt
• Humidity, relative, 30-min intervals, standard deviation(sd_rh)
• Mean Wind Speed(wspd)

• Raw data stream - documentation not supported

• lon
• Mean Wind Speed(wspd)
• lat
• Unit Vector Wind Direction(wdir)
• Humidity, relative(rh)
• Humidity, relative, 30-min intervals, standard deviation(sd_rh)
• base_time
• sd_pres
• vbat
• time_offset
• alt
• sd_vap_pres
• Temperature, air(temp)
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
• sd_wdir
• Pressure, atmospheric, constant value of model level, RUC model output(pres)
• Temperature, air, 30-min intervals, standard deviation(sd_temp)

• lon
• sd_pres
• vbat
• sd_vap_pres
• Humidity, relative(rh)
• Unit Vector Wind Direction(wdir)
• time_offset
• Temperature, air, 30-min intervals, standard deviation(sd_temp)
• Humidity, relative, 30-min intervals, standard deviation(sd_rh)
• alt
• Pressure, atmospheric, constant value of model level, RUC model output(pres)
• lat
• Pressure, vapor, 60-m height, 30-min intervals(vap_pres)
• Temperature, air(temp)
• sd_wdir
• base_time
• Mean Wind Speed(wspd)

SGP/EBBR/E22  - Water in Net Radiometer, Surface Fluxes 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.

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

• Radiation, net(net_radiation)

• net_radiation_mv

SGP/EBBR/E22 - 6 Month Checks

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

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

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

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

SGP/THWAPS/B5 - T/RH Sensor Failure

The T/H sensor cable was chewed in half by a rodent.  Cable was
replaced and reasonable data resumed after the transmitter was
adjusted 12/23.

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

SGP/EBBR/E22  - Wind Speed Sensor Frozen By Ice Storm

The wind speed sensor was frozen stopped by ice from a storm.  The wind speed 
and residual wind speed measurements are incorrect.

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed arithmetic mean(wspd_arith_mean)

SGP/EBBR/E22 - Wind Direction Sensor Frozen By Ice Storm

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• Wind speed vector mean(wspd_vec_mean)
• Wind direction vector mean(wdir_vec_mean)
• wdir_vec_std

• wdir_vec_std
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)

• wdir_vec_mean_mv

SGP/EBBR/E22 - Wind Speed Sensor Bearings Worn

Wind speed was too low and/or often at or near zero due to
               worn bearings in the wind speed sensor.  Sensor was replaced
               3/17/04.

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed arithmetic mean(wspd_arith_mean)

SGP/EBBR/E22  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed arithmetic mean(wspd_arith_mean)

SGP/EBBR/E22  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• Wind speed vector mean(wspd_vec_mean)
• Wind direction vector mean(wdir_vec_mean)
• wdir_vec_std

• wdir_vec_std
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)

SGP/EBBR/E22 - Net Radiation Incorrect

Rain filled the bottom of the net radiometer with water, resulting
in very high net radiations.  Net radiation is incorrect during this period,
also causing sensible and latent heat fluxes to be incorrect.

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

• Radiation, net(net_radiation)

SGP/EBBR/E22 - Water In Net Radiometer

Water entered the Net Radiometer through a cracked upper dome, causing the
net radiation values to be too large.  As a result, latent and sensible heat flux values 
are also incorrect.

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

• Radiation, net(net_radiation)

SGP/EBBR/E22 - 6 Month Checks

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

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

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

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

SGP/THWAPS/B5 - Temperature Sensor failure

Temperature readings exceed 50 deg C.  Temperature sensor failed and was replaced.

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

SGP/EBBR/E22  - Wind Speed Frozen Stopped By Ice Storm

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed arithmetic mean(wspd_arith_mean)

SGP/EBBR/E22  - Wind Direction Frozen Stopped By Ice Storm

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• Wind speed vector mean(wspd_vec_mean)
• Wind direction vector mean(wdir_vec_mean)
• wdir_vec_std

• wdir_vec_std
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)

• wdir_vec_mean_mv

SGP/THWAPS/B5 - Wind Data Suspect

Wind speed and direction data intermittently low throughout time period due to icing on 
sensor.

• sd_wdir
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)

SGP/EBBR/E22  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed arithmetic mean(wspd_arith_mean)

SGP/EBBR/E22  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed measurements 
are incorrect.

• Wind speed vector mean(wspd_vec_mean)
• Wind direction vector mean(wdir_vec_mean)
• wdir_vec_std

• wdir_vec_std
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)

• wdir_vec_mean_mv

SGP/EBBR/E22 - Net Radiation Too Low - Top Dome Broken

Net radiation values were too low because of a broken top dome.

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

• Radiation, net(net_radiation)

• net_radiation_mv

SGP/EBBR/E22 - Improved EBBR CR10 Program

Effective 20050330.1930, the EBBR.E20 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 20050330, 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 sgp30ebbrE20.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE20.a1).

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

SGP/THWAPS/B5 - Minor biases in humidity and saturation vapor pressure

The THWAPS humidity sensor output was scaled so that the instrument output
voltage range (0-1VDC) represented 0-100 %RH. Comparisons with the
co-located chilled mirror sensor at the CF suggested that the THWAPS RH
sensor was reading artifically low at high humidities because of this 100
%RH maximum. 
   
The scaling of the system was changed so that 0-1 VDC now represents 0-110
%RH. This resulted in a slight loss of precision in the measurements, but
since the RH measurement is only accurate to 2-3 %RH at best, this isn't a
significant problem.
   
The saturation vapor correction when temps are below 0C contained an error
in the multiplier.  The incorrect multiplier only equates to an error of
0.01 kPa which is less than the stated uncertainty of the measurement (+/-
0.035 kPa).

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

SGP/ECOR/E5 - Missing data

Data are missing and unrecoverable.

• Mean horizontal wind speed(mean_rot_u)
• mean_rot_v
• mean_rot_w
• standard deviation of wind direction(std_wind_dir)
• time
• Momentum flux (dynamic)(k)
• phi
• Corrected sensible heat flux(h)
• kurt_c
• Wind speed(wind_spd)
• temp_irga
• covariance qc(cvar_qc)
• rho
• kurt_u
• kurt_t
• covaraince wq(cvar_wq)
• kurt_w
• kurt_v
• covariance wt(cvar_wt)
• kurt_q
• standard deviation of wind elevation angle(std_elev)
• base_time
• wind_dir
• n_bad_irga
• lon
• elev
• atm_pres
• Latent heat flux(lv_e)
• friction velocity(ustar)
• covariance vt(cvar_vt)
• rotated covariance uq(cvar_rot_uq)
• covariance vw(cvar_vw)
• lv
• rotated covariance uw(cvar_rot_uw)
• rotated covariance uv(cvar_rot_uv)
• covariance wc(cvar_wc)
• rotated covariance ut(cvar_rot_ut)
• n_bad_t
• n_bad_u
• n_bad_v
• n_bad_w
• Pressure, condensation, at altitude, RUC model output(cp)
• skew_c
• covariance vq(cvar_vq)
• rotated covariance uc(cvar_rot_uc)
• covariance uv(cvar_uv)
• covariance ut(cvar_ut)
• mean_spk_q
• skew_t
• skew_u
• covariance uw(cvar_uw)
• skew_v
• skew_w
• skew_q
• covaraince vc(cvar_vc)
• mean_spk_c
• n_bad_q
• n_bad_irga_light
• covariance uc(cvar_uc)
• n_good_q
• n_good_v
• n_good_w
• n_good_t
• n_good_u
• mean_spk_w
• mean_spk_v
• lat
• covariance uq(cvar_uq)
• n_bad_c
• mean_spk_u
• mean_spk_t
• n_spk_c
• rotated variance w(var_rot_w)
• real_cp
• rotated variance v(var_rot_v)
• real_mr
• rotated variance u(var_rot_u)
• rotated covariance wt(cvar_rot_wt)
• rotated covariance wq(cvar_rot_wq)
• n_good_c
• real_rho
• alt
• n_spk_t
• mean_cooler
• n_spk_u
• n_spk_v
• covariance tc(cvar_tc)
• n_spk_w
• n_bad_son_ic
• rotated covariance wc(cvar_rot_wc)
• time_offset
• covariance tq(cvar_tq)
• Mean CO2 density(mean_c)
• real_lv
• n_spk_q
• CO2 flux(fc)
• rotated covariance vq(cvar_rot_vq)
• rotated covariance vt(cvar_rot_vt)
• Mean sonic temperature (t), i.e. virtual temperature(mean_t)
• Mean H2O density(mean_q)
• rotated covariance vw(cvar_rot_vw)
• mean_w
• mean_u
• mean_v
• variance of variable c(var_c)
• rotated covariance vc(cvar_rot_vc)
• variance of variable u(var_u)
• variance of variable v(var_v)
• variance of variable w(var_w)
• variance of variable q(var_q)
• mr
• variance of variable t(var_t)

SGP/EBBR/E22 - Net Radiation Incorrect; Sensible and Latent Heat Fluxes Incorrect

The net radiometer top dome was broken and water got inside, making the net radiation, and 
sensible and latent heat flux measurements incorrect.

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

• Radiation, net(net_radiation)

• net_radiation_mv

SGP/EBBR/E22 - Average Soil Heat Flux Incorrect

A typo in the version 9 EBBR program caused average soil heat flow to be zero, resulting 
in both sensible and latent heat fluxes being approximately 20 watts per meter squared too 
large during the middle of the day.

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

SGP/EBBR/E22 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E22 data collected by ARM back to the installation of the 
instrument in April 1993. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil type
4) Correction of soil moisture units (from "by volume" to "gravimetric")

• base_time

• base_time

• base_time

SGP/EBBR/E22 - Sensible and Latent Heat Fluxes Incorrect

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

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

• temp_air_left
• temp_air_right

SGP/EBBR/E22 - Fluxes Incorrect When Soil Heat Flow #3 Out of Range

When soil heat flow #3 exceeded the range limit in the EBBR program, it was replaced with 
9999es.  This caused the ave_shf and the sensible and latent heat fluxes to be incorrect.

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

SGP/EBBR/E22 - Wind Speed Sensor Frozen Stopped

The wind speed sensor was frozen to a stopped condition.

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed arithmetic mean(wspd_arith_mean)

SGP/ECOR/E5 - CO2 and Water Vapor Fluxes and Means Incorrect

The LI-7500 at E5 ECOR did not putting out data during this period.

Therefore, CO2 and H2O fluxes and means were incorrect during the period.

• rotated covariance uq(cvar_rot_uq)
• n_spk_c
• covaraince wq(cvar_wq)
• rotated covariance wq(cvar_rot_wq)
• n_good_c
• kurt_q
• covariance wc(cvar_wc)
• covariance tc(cvar_tc)
• n_bad_son_ic
• rotated covariance wc(cvar_rot_wc)
• skew_c
• covariance tq(cvar_tq)
• Mean CO2 density(mean_c)
• covariance vq(cvar_vq)
• n_spk_q
• rotated covariance uc(cvar_rot_uc)
• CO2 flux(fc)
• mean_spk_q
• rotated covariance vq(cvar_rot_vq)
• skew_q
• Mean H2O density(mean_q)
• mean_spk_c
• covaraince vc(cvar_vc)
• n_bad_q
• variance of variable c(var_c)
• n_good_q
• covariance uc(cvar_uc)
• kurt_c
• atm_pres
• rotated covariance vc(cvar_rot_vc)
• Latent heat flux(lv_e)
• variance of variable q(var_q)
• temp_irga
• covariance uq(cvar_uq)
• n_bad_c
• covariance qc(cvar_qc)

SGP/EBBR/E22 - Net Radiation and Sensible and Latent Heat Fluxes Incorrect

Rain entered the net radiometer, causing net radiation, and thus sensible and latent heat 
fluxes, to be too large.

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

• Radiation, net(net_radiation)

• net_radiation_mv

SGP/EBBR/E22 - Soil Heat Flow #4 Incorrect - Sensible and Latent Heat Fluxes Sometimes 
Affected

Soil heat flow sensor #4 dropped to low values or offscale.

Sensible and latent heat fluxes were sometimes affected.

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

• soil_heat_flow_4_mv

SGP/EBBR/E22 - 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):

0-49, 139-360

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.

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

SGP/THWAPS/B5 - Wind Speed and Direction Data Incorrect

Wind speed and direction data were incorrect as the sensor was frozen.

• sd_wdir
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)

SGP/ECOR/E5 - Reprocess: Time shifted -7 hours

An inadvertant power outage caused the ECOR program to shut down abnormally.  When power 
was restored, the timestamps on the ECOR files were 7 hours behind the correct time and 
the site ID was not accessed from the ECOR configuration file resulting in site ID (05) 
being replaced with "AN".

These conditions caused the ECOR files to be unrecognizable and therefore are presently 
missing in the Archive.

Correction of the timestamp and ID in the files should allow them to be processed and 
added to the Archive.

• AVHRR satellite images for Darwin from BOM (RAW)(raw)

• Mean horizontal wind speed(mean_rot_u)
• mean_rot_v
• mean_rot_w
• standard deviation of wind direction(std_wind_dir)
• time
• Momentum flux (dynamic)(k)
• phi
• Corrected sensible heat flux(h)
• kurt_c
• Wind speed(wind_spd)
• temp_irga
• covariance qc(cvar_qc)
• rho
• kurt_u
• kurt_t
• covaraince wq(cvar_wq)
• kurt_w
• kurt_v
• covariance wt(cvar_wt)
• kurt_q
• standard deviation of wind elevation angle(std_elev)
• base_time
• wind_dir
• n_bad_irga
• lon
• elev
• atm_pres
• Latent heat flux(lv_e)
• friction velocity(ustar)
• rotated covariance uq(cvar_rot_uq)
• covariance vt(cvar_vt)
• covariance vw(cvar_vw)
• lv
• rotated covariance uw(cvar_rot_uw)
• rotated covariance uv(cvar_rot_uv)
• covariance wc(cvar_wc)
• rotated covariance ut(cvar_rot_ut)
• n_bad_t
• n_bad_u
• n_bad_v
• n_bad_w
• Pressure, condensation, at altitude, RUC model output(cp)
• skew_c
• covariance vq(cvar_vq)
• rotated covariance uc(cvar_rot_uc)
• covariance uv(cvar_uv)
• covariance ut(cvar_ut)
• mean_spk_q
• skew_t
• skew_u
• covariance uw(cvar_uw)
• skew_v
• skew_w
• skew_q
• covaraince vc(cvar_vc)
• mean_spk_c
• n_bad_q
• n_bad_irga_light
• covariance uc(cvar_uc)
• n_good_q
• n_good_v
• n_good_w
• n_good_t
• n_good_u
• mean_spk_w
• mean_spk_v
• lat
• covariance uq(cvar_uq)
• n_bad_c
• mean_spk_u
• mean_spk_t
• n_spk_c
• rotated variance w(var_rot_w)
• real_cp
• rotated variance v(var_rot_v)
• real_mr
• rotated variance u(var_rot_u)
• rotated covariance wt(cvar_rot_wt)
• rotated covariance wq(cvar_rot_wq)
• n_good_c
• real_rho
• alt
• n_spk_t
• mean_cooler
• n_spk_u
• n_spk_v
• covariance tc(cvar_tc)
• n_spk_w
• n_bad_son_ic
• rotated covariance wc(cvar_rot_wc)
• time_offset
• covariance tq(cvar_tq)
• Mean CO2 density(mean_c)
• real_lv
• n_spk_q
• CO2 flux(fc)
• rotated covariance vq(cvar_rot_vq)
• rotated covariance vt(cvar_rot_vt)
• Mean sonic temperature (t), i.e. virtual temperature(mean_t)
• Mean H2O density(mean_q)
• rotated covariance vw(cvar_rot_vw)
• mean_w
• mean_u
• mean_v
• variance of variable c(var_c)
• rotated covariance vc(cvar_rot_vc)
• variance of variable u(var_u)
• variance of variable v(var_v)
• variance of variable w(var_w)
• variance of variable q(var_q)
• mr
• variance of variable t(var_t)

SGP/EBBR/E22 - Wind Direction Incorrect

Wind direction was flat-lining at 135 degrees and occasionally changed to 0.4 degrees.

• Wind speed vector mean(wspd_vec_mean)
• Wind direction vector mean(wdir_vec_mean)
• wdir_vec_std

• wdir_vec_std
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)

• wdir_vec_mean_mv

SGP/ECOR/E5 - Flux Measurements Incorrect

The ECOR datastream was corrupted; this happens when the ECOR program produces a 
datastream of the wrong length (i.e., leaves one or more measurements out).

Fluxes and some other measurements are incorrect.

Note: Mentor reports reprocessing will not correct this problem.

• CO2 flux(fc)
• Latent heat flux(lv_e)
• Corrected sensible heat flux(h)

SGP/ECOR/E5 - Flux Data Incorrect

CO2 flux (lv_e) and latent heat flux (fc) were incorrect because the sonic anemometer was 
not working.

• CO2 flux(fc)
• covaraince wq(cvar_wq)
• Latent heat flux(lv_e)
• Mean H2O density(mean_q)
• Mean CO2 density(mean_c)
• variance of variable q(var_q)
• covariance wc(cvar_wc)
• variance of variable c(var_c)

SGP/EBBR/E22 - H and LE Incorrect

Soil Heat Flow 1 bounced around and went offscale at times, resulting in the EBBR program 
setting sensible and latent heat fluxes to 9999es.

The problem ended during a PM visit, possibly because of routine checks and tightening of 
leads in terminal strips.

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

• soil_heat_flow_1_mv

SGP/THWAPS/B5 - Reprocess: RH values 10% Above Actual

The T/RH probe was replaced with a recently calibrated sensor.  The newly installed probe 
did not have the correct span 0-110% RH for output.  This caused the readings to 
artificially high by 10%.

• Humidity, relative, 30-min intervals, standard deviation(sd_rh)
• Humidity, relative(rh)

SGP/THWAPS/B5 - Wind Data Incorrect Due to Icing

An ice storm caused the wind data from the RM Young wind sensor to be
incorrect.  In many instances it was frozen and unmoving, at times it
measured values but those are extremely suspect.

• sd_wdir
• Mean Wind Speed(wspd)
• Unit Vector Wind Direction(wdir)

SGP/ECOR/E5 - Incorrect Sensible and Latent Heat Fluxes

Starting at approximately 4:00 GMT on 02/16, the ECOR suffered from the "garbled" data 
condition, a result of a serial communication failure. 

All sensible and latent heat flux measurements are incorrect during this condition.

• covaraince wq(cvar_wq)
• rotated covariance wt(cvar_rot_wt)
• rotated covariance wq(cvar_rot_wq)
• Latent heat flux(lv_e)
• Corrected sensible heat flux(h)
• covariance wt(cvar_wt)

SGP/EBBR/E22 - Wind Speed Incorrect

The wind speed sensor was frozen stopped by freezing rain.

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed arithmetic mean(wspd_arith_mean)

• Wind speed arithmetic mean(wspd_arith_mean)

SGP/EBBR/E22 - Reprocess: E22 Soil Moisture Values Off End of Calibration at High Soil 
Moistures

Intermittently, since November 1997 soil moisture probes 1, 2, and 3
indicate small positive or else negative values when soil moisture is
high (greater than 35%).  This situation is similar to that at the Cement
EBBR, although the soil at Cordell is not capable of holding as much water
as that at Cement. The cause of the problem is inadequate range in the
calibration curve equation.  Very high soil moisture cannot be obtained
with the calibration soil used by REBS.  The soil moisture equations
could be manipulated to allow larger soil moistures to be calculated.
However, the infrequency of occurence does not justify doing so.

The soil moisture data must be inspected by the data user to see when
soil moisture values for one or more probes is inconsistent with the
others.

Recalculation of ave_shf, e, and h must be made using only the soil
moisture sets with correct soil moisture values.

Affected data values are (# for probe number):

15 minute: rr_sm#

30 minute: sm#, c_shf#, cs#, ces#, g#, ave_shf, e, h

Sensible, latent, and soil heat fluxes can be recalculated using the soil
probe sets that provide correct data.  For example, if soil moisture 2 is
incorrect,

ave_shf = (g1 + g3 + g4 + g5)/4

e = -(q + ave_shf)/(1 +bowen)

h = -(e + ave_shf +q),


If soil moistures 1 and 2 are incorrect,

ave_shf = (g3 + g4 + g5)/3

e = -(q + ave_shf)/(1 +bowen)

h = -(e + ave_shf +q),


If soil moistures 1, 2, and 3 are incorrect,

ave_shf = (g4 + g5)/2

e = -(q + ave_shf)/(1 +bowen)

h = -(e + ave_shf +q),

etc.

• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_moisture_5
• energy_storage_change_1
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

• soil_moisture_4_r
• soil_moisture_3_r
• soil_moisture_1_r
• soil_moisture_5_r
• soil_moisture_2_r