SGP/EBBR - EBBR E4 Data Incorrect When Batt. Volt. Under 10.4 V

All data was incorrect when the battery voltage dropped below 10.4 volts.
An old battery was the cause of the problem; it had no deep cycle charge
capacity.

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

• temp_air_right
• atmos_pressure_mv
• temp_trh_right_rr
• net_radiation_mv
• lon
• soil_moisture_5_r
• soil_heat_flow_1_mv
• time_offset
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• soil_temp_2_rr
• soil_heat_flow_5_mv
• base_time
• temp_trh_left_rr
• soil_heat_flow_4_mv
• soil_heat_flow_3_mv
• battery_voltage
• soil_temp_1_rr
• temp_air_left
• home_signal
• wdir_vec_mean_mv
• soil_moisture_2_r
• soil_moisture_1_r
• soil_moisture_3_r
• alt
• soil_moisture_4_r
• soil_temp_4_rr
• soil_temp_5_rr
• rh_right_mv
• temp_reference_rr
• lat
• soil_temp_3_rr
• rh_left_mv
• soil_heat_flow_2_mv

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

SGP/EBBR - EBBR E4 Soil Heat Flux Values Too Large

Soil Heat flux from probes #1 and #4 are incorrect for the period.  The
flux values output were larger than what could be considered reasonable, 
for unknown reasons.

The following values were therefore incorrect as a result:

15 minute: mv_hft1, mv_hft4
30 minute: shf1, shf4, c_shf1, c_shf4, g1, g4, ave_shf, e, h

• soil_heat_flow_4_mv
• soil_heat_flow_1_mv

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• corr_soil_heat_flow_1
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_flow_4
• soil_heat_flow_1
• surface_soil_heat_flux_4
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_1
• corr_soil_heat_flow_4

SGP/EBBR - EBBR E12 Anemometer Cups Frozen, Wind Speed Incorrect

The anemometer cups were frozen stalled during this period.

The following values were therefore incorrect:

5 minute:  wind_s, res_ws
15 minute: wind_s
30 minute: wind_s, res_ws

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

SGP/EBBR - EBBR E12 Net Radiation Incorrect

Condensation inside the domes (possibly water in the bottom dome also) 
during the period made daytime net radiation values as much as 50% too 
large and nighttime net radiations as much as 100% too small.  

The affected data are:

5 minute:  q
15 minute: mv_q
30 minute: q, h, e

• 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)

• net_radiation_mv

• Radiation, net(net_radiation)

SGP/EBBR - EBBR E12 Net Radiation Incorrect

The net radiometer top dome was broken and water had entered.  Net 
radiation values are therefore incorrect during the period.

The affected data are:

5 minute:  q
15 minute: mv_q
30 minute: q, h, e

• 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)

• net_radiation_mv

• Radiation, net(net_radiation)

SGP/EBBR/E4 - E4 Negative SM5 Causes Incorrect Measurements

Negative soil moisture #5 caused the indicated measurements to be 
incorrect.

• energy_storage_change_5
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• soil_moisture_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_capacity_5
• surface_soil_heat_flux_5
• corr_soil_heat_flow_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

SGP/EBBR/E4 - E4 SHF3 Large Negative

Soil Heat Flow #3 became large negative, causing the indicated 
measurements to be incorrect.

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_flow_3
• surface_soil_heat_flux_3
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_3

SGP/EBBR/E4 - Missing Data

Data was missing because of AEM check and EBBR program reload.

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

• temp_air_right
• atmos_pressure_mv
• temp_trh_right_rr
• net_radiation_mv
• lon
• soil_moisture_5_r
• soil_heat_flow_1_mv
• time_offset
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• soil_temp_2_rr
• soil_heat_flow_5_mv
• base_time
• temp_trh_left_rr
• soil_heat_flow_4_mv
• soil_heat_flow_3_mv
• battery_voltage
• soil_temp_1_rr
• temp_air_left
• home_signal
• wdir_vec_mean_mv
• soil_moisture_2_r
• soil_moisture_1_r
• soil_moisture_3_r
• alt
• soil_moisture_4_r
• soil_temp_4_rr
• soil_temp_5_rr
• rh_right_mv
• temp_reference_rr
• lat
• soil_temp_3_rr
• rh_left_mv
• soil_heat_flow_2_mv

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

SGP/EBBR/E4 - Data Missing

Data was missing during the six month calibration

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

• temp_air_right
• atmos_pressure_mv
• temp_trh_right_rr
• net_radiation_mv
• lon
• soil_moisture_5_r
• soil_heat_flow_1_mv
• time_offset
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• soil_temp_2_rr
• soil_heat_flow_5_mv
• base_time
• temp_trh_left_rr
• soil_heat_flow_4_mv
• soil_heat_flow_3_mv
• battery_voltage
• soil_temp_1_rr
• temp_air_left
• home_signal
• wdir_vec_mean_mv
• soil_moisture_2_r
• soil_moisture_1_r
• soil_moisture_3_r
• alt
• soil_moisture_4_r
• soil_temp_4_rr
• soil_temp_5_rr
• rh_right_mv
• temp_reference_rr
• lat
• soil_temp_3_rr
• rh_left_mv
• soil_heat_flow_2_mv

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

SGP/EBBR/E4 - E4 Incorrect Data, AEM Stuck

During the period stated, the AEM was stuck in one position.
The indicated measurements are incorrect because of this.

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

• temp_air_right
• temp_air_left

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

SGP/EBBR/E4 - E4 Data Incorrect

The indicated data are incorrect, cause unknown.

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

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

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

SGP/EBBR/E4 - E4 SM5 Drifting

The Soil moisture #5 was drifting around during this period
and is characterized as suspect.  The drifting was not
so much as to affect soil, sensible, and latent heat fluxes.

• soil_moisture_5

SGP/EBBR/E12 - EBBR E12 Wind Speed Iced

The anemometer was frozen stopped by freezing rain; the indicated data is incorrect.

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

SGP/EBBR/E4 - EBBR E4 Wind Speed Iced

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

• Wind speed vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_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/E12 - EBBR E12 Wind Speed Iced

The anemometer was frozen stopped by freezing rain; the indicated data is incorrect.

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

SGP/EBBR/E12 - E12 EBBR Wind Direction Incorrect

The wind direction vane was frozen stopped in one direction by icing.

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

• wdir_vec_mean_mv

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

SGP/EBBR/E12 - E12 EBBR Wind Speed Incorrect

The wind speed sensor cups were frozen stopped by icing.

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

SGP/EBBR/E12 - E12 EBBR AEM Stuck - Data Incorrect

The AEM became stuck between levels, causing all gradient measurements to be incorrect, 
and thus the latent and sensible heat fluxes and Bowen ratio.

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

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

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

SGP EBBR E4 - E4 EBBR Soil Heat Flow #3 Incorrect

SHF #3 was large negative most of the time during the period
indicated.  Average soil heat flow, sensible heat flux, and latent 
heat flux are therefore incorrect.

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_flow_3
• surface_soil_heat_flux_3
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_3

• soil_heat_flow_3_mv

SGP EBBR E4 - E4 EBBR Data Incorrect

Re-loading the datalogger program caused all values to 
be incorrect; the time interval of the measurements
is not correct, so the data is incorrect as well.

• Raw data stream - documentation not supported

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

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

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

SGP EBBR E4 - E4 EBBR Data Incorrect

The data was incorrect for the first time period after the datalogger program was 
reloaded.

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

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

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

SGP EBBR E4 - E4 EBBR Data Incorrect During 6 Month Checks

The data was incorrect during the 6 month checks.

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

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

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

SGP EBBR E12 - E12 EBBR Data Incorrect During 6 Month Checks

The data was incorrect during the 6 month checks.

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

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

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

SGP EBBR E4 - E4 EBBR Data Incorrect

The data was incorrect immediately after 6 month checks
were completed.

• Raw data stream - documentation not supported

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

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

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

SGP EBBR E12 - E12 EBBR Data Incorrect From AEM In One Position

The AEM kept stopping in one position. Offset biases are not removed from the 
gradient data in this situation and the data indicated is therefore incorrect.

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

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

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

SGP/EBBR/E12 - 3-month Check

During EBBR 3 month checks the Automatic Exchange Mechanism is disabled
(reflected by home signals near zero) so that the two aspirator units can be
placed at the same height.  The measurements during this period, at least,
do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h),
or latent heat flux (e), nor do the air temperature and relative humidity
measurements indicate gradients.  Checks performed before or after the AEM
is disabled also lead to some incorrect data.

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

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

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

SGP/EBBR/E4 - T/RH Check

During the month of November 1994, site operations personnel conducted
field comparisons of the temperature and relative humidity sensors in the
EBBRs and the HMI31 portable T/RH meter (with the removable probe).  As is
reflected in the home signal output, the automatic exchange mechanism was
disabled in order to conduct the checks.

Measurements were taken every 5 minutes, for a half hour each in the
aspirated radiation shields (the HMI31 was inserted into the EBBR aspirated
radiation shield to provide the same aspiration as the EBBR sensors
received).  Measurements of aspirator flow were also recorded.  This
information was provided to the mentor.  The mentor then compared the field
checks with the data recorded by the EBBRs.

The periods of data and data fields that are incorrect because of the checks
are listed below.  Times are those at which the data are reported.

Data Fields
5 minute:  tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
           vp_top, vp_bot
15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, tair_r, tair_l
30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
           vp_top, vp_bot, bowen, e, h

5 minute:  1620, 1625, 1630, 1635, 1640, 1645, 1650, 1655, 1700,
           1705, 1710, 1715, 1720, 1725, 1730, 1735, 1740
15 minute: 1630, 1645, 1700, 1715, 1730, 1745
30 minute: 1630, 1700, 1730, 1800

(EDITORS NOTE:  The following analysis refers to all EBBRs installed in Nov 1994)

Results of the T/RH comparisons:
The combined accuracy of the HMI31 and EBBR temperature sensors
(thermocouples or PRTDs) is +/- 0.4 degrees C.  The combined accuracy of the
HMI31 and EBBR RH sensors is +/- 4% for RH less than 80%, and +/- 6% for RH
greater than 80%.  The combined accuracy for each pair of EBBR sensors of
the same type is essentially the same as the quantities stated above.

All of the pairs of EBBR sensors show differences that fall within the
stated combined accuracies.  Although this sounds wonderful, a few of the
differences are close to the combined accuracy, which, because of the small
differences in temperature being measured (normally smaller than the
magnitude of the combined accuracy) could lead to some incorrect estimation
of sensible and latent heat flux.  However, unless there would be substantial
differences of calibration slope of two sensors in a pair, the switching of
height of the sensors every 15 minutes by the automatic exchange mechanism
will remove the offset between the sensors.

The comparisons between the EBBR sensors and the HMI31 T/RH meter showed
much larger differences.  The range of differences were: -2.4 to 0.0 degrees
for the thermocouples, -2.1 to 0.1 degrees for the RH probe PRTDs, and -6.6 to
6.7 percent for the RH sensors.  Six Thermocouples indicated differences from
the HMI31 greater than the combined accuracy.  Seven PRTDs indicated
differences from the HMI31 greater than the combined accuracy.  Four RH
sensors indicated differences from the HMI31 greater than the combined
accuracy.  The temperature differences (for both thermocouples and PRTDs)
were nearly all of one sign; the HMI31 indicated the greater temperature,
which may suggest a bias in the HMI31 temperature measurement, even though
a dozen differences of +/- 0.2 degrees were measured.  Four differences of
zero and only one positive difference (out of 40) were measured.  Thirteen of
the 20 RH differences were positive (HMI31 indicating the lower
RH), with the differences near the level of the combined accuracies being
approximately 50% positive and 50% negative.  It does not appear that the
HMI31 has a RH bias.

Plots of EBBR sensor/HMI31 differences as a function of time from the
installation of the individual sensors (a range of 10 to 30 months in the
field) shows no obvious pattern of sensor drift with time.  This is encouraging.

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

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

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

SGP/EBBR/E12 - T/RH Check

During the month of November 1994, site operations personnel conducted
field comparisons of the temperature and relative humidity sensors in the
EBBRs and the HMI31 portable T/RH meter (with the removable probe).  As is
reflected in the home signal output, the automatic exchange mechanism was
disabled in order to conduct the checks.

Measurements were taken every 5 minutes, for a half hour each in the
aspirated radiation shields (the HMI31 was inserted into the EBBR aspirated
radiation shield to provide the same aspiration as the EBBR sensors
received).  Measurements of aspirator flow were also recorded.  This
information was provided to the mentor.  The mentor then compared the field
checks with the data recorded by the EBBRs.

The periods of data and data fields that are incorrect because of the checks
are listed below.  Times are those at which the data are reported.


Data Fields
5 minute:  tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
           vp_top, vp_bot
15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, tair_r, tair_l
30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
           vp_top, vp_bot, bowen, e, h

5 minute:  1515, 1520, 1525, 1530, 1535, 1540, 1545, 1550, 1555,
           1600, 1605, 1610
15 minute: 1515, 1530, 1545, 1600, 1615
30 minute: 1530, 1600, 1630

(EDITOR'S NOTE:  The following analysis refers to all EBBRs installed in Nov 1994)

Results of the T/RH comparisons:
The combined accuracy of the HMI31 and EBBR temperature sensors
(thermocouples or PRTDs) is +/- 0.4 degrees C.  The combined accuracy of the
HMI31 and EBBR RH sensors is +/- 4% for RH less than 80%, and +/- 6% for RH
greater than 80%.  The combined accuracy for each pair of EBBR sensors of
the same type is essentially the same as the quantities stated above.

All of the pairs of EBBR sensors show differences that fall within the
stated combined accuracies.  Although this sounds wonderful, a few of the
differences are close to the combined accuracy, which, because of the small
differences in temperature being measured (normally smaller than the
magnitude of the combined accuracy) could lead to some incorrect estimation
of sensible and latent heat flux.  However, unless there would be substantial
differences of calibration slope of two sensors in a pair, the switching of
height of the sensors every 15 minutes by the automatic exchange mechanism
will remove the offset between the sensors.

The comparisons between the EBBR sensors and the HMI31 T/RH meter showed
much larger differences.  The range of differences were: -2.4 to 0.0 degrees
for the thermocouples, -2.1 to 0.1 degrees for the RH probe PRTDs, and -6.6 to
6.7 percent for the RH sensors.  Six Thermocouples indicated differences from
the HMI31 greater than the combined accuracy.  Seven PRTDs indicated
differences from the HMI31 greater than the combined accuracy.  Four RH
sensors indicated differences from the HMI31 greater than the combined
accuracy.  The temperature differences (for both thermocouples and PRTDs)
were nearly all of one sign; the HMI31 indicated the greater temperature,
which may suggest a bias in the HMI31 temperature measurement, even though
a dozen differences of +/- 0.2 degrees were measured.  Four differences of
zero and only one positive difference (out of 40) were measured.  Thirteen of
the 20 RH differences were positive (HMI31 indicating the lower
RH), with the differences near the level of the combined accuracies being
approximately 50% positive and 50% negative.  It does not appear that the
HMI31 has a RH bias.

Plots of EBBR sensor/HMI31 differences as a function of time from the
installation of the individual sensors (a range of 10 to 30 months in the
field) shows no obvious pattern of sensor drift with time.  This is encouraging.

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

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

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

SGP/EBBR/E4 - 3-month Check

During EBBR 3 month checks the Automatic Exchange Mechanism is disabled
(reflected by home signals near zero) so that the two aspirator units can be
placed at the same height.  The measurements during this period, at least,
do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h),
or latent heat flux (e), nor do the air temperature and relative humidity
measurements indicate gradients.  Checks performed before or after the AEM
is disabled also lead to some incorrect data.

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

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

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

SGP/EBBR/E4 - Reprocess: Soil Temperature Malfunction

During individual half hours on three days, soil moisture probe #1 
indicated values that were below the acceptable minimum, for unknown
reasons.

The times of incorrect data and the affected quantities are shown below.

SM1:     Half Hour     15 Minute
20 July: 1800 GMT    1745, 1800 GMT
21 July: 0800 GMT    0745, 0800 GMT
22 July: 1800 GMT    1745, 1800 GMT

15 minute: r_sm1
30 minute: sm1, c_shf1, cs1, ces1, g1, ave_shf, e, h

• soil_moisture_1_r

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• corr_soil_heat_flow_1
• energy_storage_change_1
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_capacity_1
• soil_moisture_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_1

SGP/EBBR/E4 - Reprocess: Bad soil heat flux sensor #4

On September 11, 1993 soil heat flux sensor #4 of the Plevna, KS EBBR
(E4) malfunctioned.  The sensor was replaced September 23, 1993 before
1600. Corrupted 30 minute values of shf4, c_shf4, g4, ave_shf, h, and e,
and corrupted 15 minute values of mv_hft4 resulted from the sensor
malfunction.  

The quantities shf4, c_shf4, g4, and mv_hft4 are bad data values and are not 
recoverable.  The other quantities can be recalculated using the three
functioning sets of soil sensors. (Note: Soil heat flux sensor #5 was also
malfunctioning during the time periods identified and has therefore been
eliminated from the recalculation equations.  This problem is identified
in a separate DQR.)

ave_shf = (g1 + g2 + g3)/3
e = -(q + ave_shf)/(1 + bowen)
h = -(e + ave_shf + q)

• soil_heat_flow_4_mv

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

SGP/EBBR/E4 - Reprocess: Bad soil heat flux sensor #5

On September 1, 1993 the EBBR system at Plevna, E4, was relocated in the
same field.  However, soil contact for soil heat flux plate #5 was not
properly established.  This resulted in somewhat high positive and very
high negative outputs, depending on the direction of soil heat flow.
Corrupted 30 minute values of shf4, c_shf4, g4, ave_shf, h, and e,
and corrupted 15 minute values of mv_hft4 resulted.

The quantities shf4, c_shf4, g4, and mv_hft4 are bad data values and
are not recoverable.  The other quantities can be recalculated using
the four functioning sets of soil sensors. (Note: Soil heat flux 
sensor #4 was also malfunctioning during part of the time period 
identified.  That problem is identified in two separate DQRs.  See
D931108.5 and D020701.2 for the equations to use while sensor #4
was not working properly)

ave_shf = (g1 + g2 + g3 + g4)/4
e = -(q + ave_shf)/(1 + bowen)
h = -(e + ave_shf + q)

• soil_heat_flow_5_mv

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_flow_5
• surface_soil_heat_flux_5
• corr_soil_heat_flow_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

SGP/EBBR/E4 - Soil Moisture Probe 5 Offscale

During two half hours, soil moisture probe #5
indicated values that were offscale for an 
unknown reasons.

Affected data values are:
15 minute: rr_sm5
30 minute: sm1, c_shf5, cs5, ces5, g5, ave_shf, e, h

Sensible, latent, and soil heat fluxes can be recalculated using the
change in energy storage of probes 1-4 as follows.

ave_shf = (g1 + g2 + g3 + g4)/4
e = -(q + ave_shf)/(1 + bowen)
h = -(e + ave_shf +q)

• soil_moisture_5_r

• energy_storage_change_5
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• soil_moisture_5
• soil_heat_capacity_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_5
• corr_soil_heat_flow_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

SGP/EBBR/E12 - 6 Month Checks

The indicated measurements were incorrect during the 6 month checks.

• temp_air_left
• temp_air_right

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

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

SGP/EBBR/E4 - AEM Hung

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

• temp_air_right
• temp_air_left

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

SGP/EBBR/E4 - Data Incorrect or Zero

After the barometer was changed out, the measurements were zero or otherwise incorrect.

• Raw data stream - documentation not supported

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

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

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

SGP/EBBR/E4 - 6 Month Checks

The indicated measurements were incorrect during the six month checks.

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

• temp_air_right
• temp_air_left

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

SGP/EBBR/E12 - AEM Hung

The automatic exchange mechanism did not exchange properly, causing other measurements to 
be incorrect.

• temp_air_left
• temp_air_right

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

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

SGP/EBBR/E12 - Measurements Incorrect

All measurements were incorrect or offscale for an unknown reason.

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

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

• Raw data stream - documentation not supported

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

SGP/EBBR/E12 - Resistance Measurements Incorrect

All sensors that depend on resistance measurements are incorrect.
Average soil heat flow, sensible heat flux, and latent heat flux are incorrect as a 
result.

This condition normally occurs when the reference temperature sensor is disconnected or 
bad.

• temp_air_left
• temp_air_right

• vapor_pressure_bottom
• surface_soil_heat_flux_1
• vapor_pressure_top
• surface_soil_heat_flux_4
• surface_soil_heat_flux_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_3
• soil_heat_capacity_2
• soil_heat_capacity_1
• energy_storage_change_1
• soil_heat_capacity_5
• energy_storage_change_2
• soil_heat_capacity_4
• soil_heat_capacity_3
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_trh_bottom
• temp_trh_top
• energy_storage_change_5
• energy_storage_change_3
• temp_reference
• energy_storage_change_4
• bowen_ratio
• corr_soil_heat_flow_1
• corr_soil_heat_flow_2
• soil_temp_5
• corr_soil_heat_flow_3
• soil_temp_4
• soil_temp_3
• corr_soil_heat_flow_4
• corr_soil_heat_flow_5
• soil_temp_2
• soil_temp_1
• soil_moisture_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• soil_moisture_5
• soil_moisture_4
• soil_moisture_3
• soil_moisture_2
• temp_air_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• temp_trh_top
• vapor_pressure_bottom
• temp_air_top
• vapor_pressure_top
• temp_air_bottom
• temp_trh_bottom

SGP/EBBR/E12 - Reprocess: Soil Temperature #3 Incorrect

Soil Temperature #3 was flaky primarily during nighttime hours and sometimes during early 
daylight hours.  Average soil heat flow, sensible heat flux, and latent heat flux are 
also affected; these can be recalculated using the remaining good sets of soil sensors as 
follows:

The heat fluxes can be recalculated by using soil sets 1, 2, 4, and 5 as follows:
     ave_shf = (g1 + g2 + g4 + g5)/4
     e = -(q + ave_shf)/(1 + bowen)
     h = -(q + e + ave_shf)

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_temp_3
• energy_storage_change_3
• 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)
• surface_soil_heat_flux_3

SGP/EBBR/E12 - Wind Direction Incorrect

The wind direction measurement was zero, in the 50s, or always less than 180 degrees.

A DQPR has been issued to resolve the problem.

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

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

SGP/EBBR/E12 - Reprocess: Soil Moisture 4 and 5 Incorrect

Soil moisture measurements from sets 4 and 5 were incorrect, leading to many other 
incorrect measurements calculated using them.

Average soil heat flow, sensible heat flux, and latent heat flux are affected; these can 
be recalculated using the remaining good sets of soil sensors as follows:
    ave_shf = (g1 + g2 + g3)/3
    e = -(q + ave_shf)/(1 + bowen)
    h = -(q + e + ave_shf)

Note:  D020717.6 reports Soil temperature sensor #3 was also bad during this
time, but for the very specific records affected by the soil moisture #4 and
#5 reporting incorrectly, soil temp #3 was okay.  Therefore the equations
given are correct.

• soil_heat_capacity_5
• corr_soil_heat_flow_4
• soil_heat_capacity_4
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_4
• soil_moisture_5
• soil_moisture_4
• surface_soil_heat_flux_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

SGP/EBBR/E12 - Reprocess: Soil Moisture 2 and 5 Incorrect

Soil moisture measurements from sets 2 and 5 were incorrect, leading to many other 
incorrect measurements calculated using them.

Average soil heat flow, sensible heat flux, and latent heat flux are affected; these can 
be recalculated using the remaining good sets of soil sensors as follows:
    ave_shf = (g1 + g3 + g4)/3
    e = -(q + ave_shf)/(1 + bowen)
    h = -(q + e + ave_shf)

Note:  D020717.6 reports Soil temperature sensor #3 was also bad during this
time, but for the very specific records affected by the soil moisture #2 and
#5 reporting incorrectly, soil temp #3 was okay.  Therefore the equations
given are correct.

• soil_heat_capacity_2
• corr_soil_heat_flow_2
• soil_heat_capacity_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• soil_moisture_5
• surface_soil_heat_flux_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_2
• soil_moisture_2

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/E4 - Data Incorrect during 6 month checks

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

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

• temp_air_right
• temp_air_left

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

SGP/EBBR/E12 - Data Incorrect during 6 month checks

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

• temp_air_left
• temp_air_right

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

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

SGP/EBBR/E12 - Resistance-based Measurements Incorrect

When the Reference Temperature in the EBBR 
enclosure is not reported correctly, it
affects all resistance-based measurements
that are adjusted with the temperature of 
the reference junction.

• temp_air_right
• temp_air_left
• temp_reference_rr

• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• vapor_pressure_bottom
• energy_storage_change_5
• temp_reference
• energy_storage_change_3
• energy_storage_change_4
• corr_soil_heat_flow_1
• bowen_ratio
• soil_temp_5
• corr_soil_heat_flow_2
• soil_temp_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_4
• soil_temp_3
• soil_temp_2
• corr_soil_heat_flow_5
• soil_temp_1
• soil_moisture_1
• surface_soil_heat_flux_1
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• soil_moisture_5
• surface_soil_heat_flux_4
• surface_soil_heat_flux_5
• soil_moisture_4
• soil_moisture_3
• surface_soil_heat_flux_2
• surface_soil_heat_flux_3
• soil_moisture_2
• soil_heat_capacity_2
• soil_heat_capacity_1
• energy_storage_change_1
• energy_storage_change_2
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• temp_air_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• vapor_pressure_bottom
• temp_air_bottom
• temp_air_top
• temp_reference
• vapor_pressure_top

SGP/EBBR/E12 - Wind Direction Incorrect

The wind direction and residual wind speed measurements are incorrect.

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

• wdir_vec_mean_mv

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

SGP/EBBR/E12 - Data zero following Logger Restart

Most of the measurements were zero, which normally happens after a 
datalogger restart.  The restart on 08/16/02 occurred after an EBBR
unit changeout.

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

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

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

SGP/EBBR/E12 - Battery Voltage Low

Normally, when Battery Voltage drops below 10.5 volts, most 
measurements are suspect and some are often incorrect.
In this particular case, some of the data is suspect when
the battery voltage is below 11.0 volts.

Soil Heat Flow #3 is normally affected first, with other 
measurements following at lower voltages.

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

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

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

SGP/EBBR/E12 - AEM Stuck in One Position

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

• bowen_ratio
• 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)

SGP/EBBR/E12 - REPROCESS: Net Rad Calibration Coefficients

The Net Radiometer coefficients were incorrect in the CR10
program when the replacement EBBR unit was installed on
08/16/02.

The data can be easily corrected; see the Suggestion area below.

• 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/E12 - Data Mostly Zero Following Logger Restart

Most of the measurements were zero, which normally happens after a 
datalogger restart.

The restart on 12/10/02 occurred after a CR10
program change of net radiometer coefficients 
and subsequent restart of the CR10.

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

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

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

SGP/EBBR/E4 - Wind Speed Incorrect

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

• Wind speed vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_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/E4 - Soil Moisture #4 zero

Soil Moisture #4 was zero only in the 30 minute data.

It can be assumed that there was an error in reading
the data from the Campbell datalogger, as no other
measurements, including those calculated from soil
moisture #4, are affected.

• soil_moisture_4

SGP/EBBR/E12 - AEM Hung Inbetween Home Positions

The AEM was hung inbetween home positions, causing many measurements to be incorrect.

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

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

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

SGP/EBBR/E4  - Soil Temperature #5 Incorrect

Soil Temperature #5 was incorrect.

This affected many measurements, including sensible and latent heat fluxes.

• soil_temp_5_rr

• soil_temp_5
• energy_storage_change_5
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

SGP/EBBR/E4  - 6 Month Checks

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

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

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

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

SGP/EBBR/E12 -  6 Month Checks

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

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

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

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

SGP/EBBR/E12  - 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)

• net_radiation_mv

• Radiation, net(net_radiation)

SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage

The barometer output was scaling with supply voltage (i.e. it 
               followed the charging of the battery by the solar panel).

               NOTE: The barometer was replaced later than the end date of 
               this DQR.  Why the problem ended on 26 Nov 2003 is unclear; 
               there was no site ops intervention on that date.

               The problem did not affect the sensible and latent heat flux 
               calculations beyond the expected system error.

• atmos_pressure_mv

• Barometric Pressure(atmos_pressure)

• Barometric Pressure(atmos_pressure)

SGP/EBBR/E4 - 6 Month Checks

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

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

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

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

SGP/EBBR/E12 - 6 Month Checks

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

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

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

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

SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage

The barometer output scaled with supply voltage (it followed the charging of the battery 
by the solar panel).

The problem did not affect the sensible and latent heat flux calculations
beyond the expected system error.

• atmos_pressure_mv

• Barometric Pressure(atmos_pressure)

• Barometric Pressure(atmos_pressure)

SGP/EBBR/E12  - 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, 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, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)

SGP/EBBR/E4  - 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, lower, 1-min avg(wspd_arith_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/E12  - 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, 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, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)

SGP/EBBR/E12  - 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, lower, 1-min avg(wdir_vec_mean)
• wdir_vec_std

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

SGP/EBBR/E4  - 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, lower, 1-min avg(wspd_arith_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/E4  - 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 direction, vector, lower, 1-min avg(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• wdir_vec_std

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

SGP/EBBR/E12 - Incorrect Times

The ntpd server (time adjustment) stopped working on Feb. 19th at 22:12:16 GMT, and the 
clock was corrected by -5600.177269 seconds on March 10th at 22:47 GMT. The recorded times 
for observations are off by amounts ranging from 0 seconds on Feb. 19th to 5600 seconds 
on March 10th.

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

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

• ts5
• ts4
• ts3
• ts2
• ts1
• vp_bot
• hum_top
• c_shf2
• c_shf3
• Heat flux, sensible, aerodynamic(ah)
• c_shf1
• ces5
• ces4
• ces3
• ces2
• ces1
• tref
• vp_top
• time_offset
• home_30
• bowen
• thum_bot
• thum_top
• hum_bot
• res_ws
• sigma_wd
• Corrected sensible heat flux(h)
• Heat flux, latent(e)
• c_shf5
• c_shf4
• base_time
• Heat flux, latent, aerodynamic(ale)
• Average soil heat flux(ave_shf)
• Radiation, net(q)
• Heat flux, sensible, best estimate(hcomb)
• tair_bot
• g1
• g4
• g5
• g2
• g3
• shf1
• shf2
• shf3
• shf4
• shf5
• cs2
• cs1
• cs4
• cs3
• cs5
• sm1
• sm2
• wind_d
• tair_top
• home_15
• vegetation_height
• Pressure, atmospheric, constant value of model level, RUC model output(pres)
• sm5
• sm3
• sm4
• wind_s
• austar
• Heat flux, latent, best estimate(ecomb)

• Raw data stream - documentation not supported

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

SGP/EBBR/E4 - Net Radiation Incorrect, Sensible and Latent Heat Fluxes Incorrect

The Net Radiometer domes were broken and rain entered, causing net radiation values to be 
too large during the period.

• Radiation, net(net_radiation)

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

SGP/EBBR/E12 - 6 Month Checks

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

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

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

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

SGP/EBBR/E12 - AEM home_15 Incorrect, Flux Measurements not affected

The home_15 measurement was incorrect during much of the stated period.
The AEM was exchanging however, and thus the flux measurements were not affected.

• home_signal

• home_signal_15

• home_signal

SGP/EBBR/E4 - 6 Month Checks

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

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

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

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

SGP/EBBR/E4  - 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, lower, 1-min avg(wspd_arith_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/E12  - 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, 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, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)

SGP/EBBR/E4  - 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 direction, vector, lower, 1-min avg(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• wdir_vec_std

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

• wdir_vec_mean_mv

SGP/EBBR/E12  - 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, lower, 1-min avg(wdir_vec_mean)
• wdir_vec_std

• wdir_vec_mean_mv

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

SGP/EBBR/E4  - 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 direction, vector, lower, 1-min avg(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• wdir_vec_std

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

• wdir_vec_mean_mv