SGP/EBBR - EBBR E2 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/E2 - EBBR E2 Wind Speed Iced

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

• Wind speed arithmetic mean(wspd_arith_mean)

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

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

SGP/EBBR/E2 - E2 EBBR Most Data Incorrect

After logger replacement, most data was incorrect for the next
timestamp.

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

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

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

SGP/EBBR/E2 - Missing data

Data are missing and unrecoverable.

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

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

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

SGP/EBBR/E2 - E2 EBBR Data Incorrect

The data was incorrect for a period after logger replacement.

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

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

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

SGP/EBBR/E2 - E2 EBBR Ts4 and SM4 Bouncing Around

Ts4 and SM4 values bounced around in an unnatural way.  The indicated data during the 
period indicated was incorrect.

• soil_moisture_4_r
• soil_temp_4_rr

• soil_moisture_4
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• energy_storage_change_4
• soil_heat_capacity_4
• soil_temp_4
• surface_soil_heat_flux_4
• 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/E2 - E2 EBBR Ts2 Incorrect

Ts2 data and quantities derived from it were incorrect for
the indicated period.

• soil_temp_2_rr

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_2
• energy_storage_change_2
• soil_heat_capacity_2
• soil_temp_2
• 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/E2 - E2 EBBR Wind Direction Incorrect

The wind direction values were 135 degrees (an indication of an
electronics failure in the sensor), 0 degrees, or 359 degrees during 
the indicated period, and were incorrect.

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

• wdir_vec_mean_mv

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

SGP/EBBR/E2 - E2 EBBR Data Incorrect

Most of the data values were incorrect during the indicated
time period, for an unknown reason.

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

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

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

SGP/EBBR/E2 - E2 EBBR Low Battery Condition

All data should be considered to be incorrect when battery voltage is 
10.4 volts or less.

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

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

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

SGP/EBBR/E2 - E2 EBBR Left Aspirator Fan Stopped

The indicated data was incorrect while the left aspirator fan
was not operating.

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

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

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

SGP/EBBR/E2 - E2 EBBR AEM Stuck In One Position

The indicated data was incorrect while the AEM was
was not operating properly.

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

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

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

SGP/EBBR/E2 - E2 EBBR AEM Stuck In One Position

The indicated data was incorrect while the AEM was
was not operating properly.

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

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

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

SGP/EBBR/E2 - E2 EBBR AEM Stuck In One Position

The indicated data was incorrect while the AEM was
was not operating properly.

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

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

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

SGP/EBBR/E2 - E2 EBBR AEM Stuck In One Position

The indicated data was incorrect while the AEM was
was not operating properly.

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

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

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

SGP/EBBR/E2 - E2 EBBR AEM Stuck In One Position

The indicated data was incorrect while the AEM was
was not operating properly.

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

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

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

SGP/EBBR/E2 - E2 EBBR AEM Stuck In One Position

The indicated data was incorrect while the AEM was
was not operating properly.

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

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

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

SGP/EBBR/E2 - E2 EBBR AEM Stuck In One Position

The indicated data was incorrect while the AEM was
was not operating properly.

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

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

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

SGP/EBBR/E2 - E2 EBBR AEM Stuck In One Position

The indicated data was incorrect while the AEM was
was not operating properly.

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

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

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

SGP EBBR E2 - E2 EBBR Data Incorrect During 6 Month Checks

The indicated data was incorrect during the 6 month checks.

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

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

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

SGP/EEBR/E2 - AEM Stopped In One Position

All gradient related measurements, including sensible and latent heat
flux and bowen ratio, are incorrect.

The AEM kept stopping in the home30 position (home signal about 23).

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

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

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

SGP/EEBR/E2 - AEM Stopped In One Position

The AEM kept stopping in one of three positions, none of which allow
sensible heat flux, latent heat flux, or Bown ratio to be calculated
correctly.  These and the gradient measurements are incorrect for the
period indicated.

The AEM stopped in either the home15 position (home signal about 53),
the home 30 position (home signal about 23), or inbetween these two
(home signal 1 to 2).

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

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

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

SGP/EEBR/E2 - Wind Direction Frozen

The wind direction sensor froze stopped for the indicated period of time.
The indicated measurements are incorrect.

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

• wdir_vec_mean_mv

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

SGP/EEBR/E2 - Wind Speed Sensor Frozen

The wind speed sensor was frozen stopped.
The indicated measurements were incorrect.

• Wind speed arithmetic mean(wspd_arith_mean)

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

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

SGP/EEBR/E2 - Soil Temperature #2 Incorrect

Soil temperature #2 was intermittently incorrect.
The cause is not yet known.  The indicated other measurements
were also incorrect because soil temperature #2 was used in the
calculations of the quantities.

Soil moisture (30 minute only) was affected because version 6
of the EBBR datalogger program used a multiplication of
soil temperature and soil moisture as part of the adjustment
of soil moisture for soil temperature.  This was discovered
to be a poor technique soon after it was implemented, but E2
will continue to use version 6 until a replacement EBBR unit
is available.

Changeout dates of the EBBR units can be found on the EBBR
Instrument web page.

• soil_temp_2_rr

• soil_moisture_2
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_2
• energy_storage_change_2
• soil_temp_2
• 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/E2 - Reprocess: E2 EBBR Soil Temperature #2 Incorrect

Soil Temperature #2 was intermittently incorrect.
The cause is unknown.

The indicated measurements that are calculated using 
soil temperature are also incorrect.

Soil moisture #2 (30 minute only) was also affected 
because version 6 of the EBBR datalogger program 
uses a multiplication of soil temperature and soil 
moisture as part of the adjustment of soil moisture for
soil temperature.  This was discovered to be a poor 
technique soon after it was implemented, but E2 will
continue to use version 6 until a replacement EBBR
unit is available.  When soil temperature #2 is large
negative, soil moisture #2 is often twice as large
as it should be.

EBBR unit changeout dates are listed on the EBBR 
instrument web page.

• soil_temp_2_rr

• soil_moisture_2
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_2
• energy_storage_change_2
• soil_temp_2
• 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/E2 - Reprocess: E2 EBBR Soil Temperature #2 Incorrect

Soil Temperature #2 was intermittently incorrect.
The cause is unknown.

The indicated measurements that are calculated using 
soil temperature are also incorrect.

Soil moisture #2 (30 minute only) was also affected 
because version 6 of the EBBR datalogger program 
uses a multiplication of soil temperature and soil 
moisture as part of the adjustment of soil moisture for
soil temperature.  This was discovered to be a poor 
technique soon after it was implemented, but E2 will
continue to use version 6 until a replacement EBBR
unit is available.  When soil temperature #2 is large
negative, soil moisture #2 is often twice as large
as it should be.

EBBR unit changeout dates are listed on the EBBR 
instrument web page.

• soil_temp_2_rr

• soil_moisture_2
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_2
• energy_storage_change_2
• soil_temp_2
• 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/E2 - Reprocess: E2 EBBR Soil Temperature #2 Incorrect

Soil Temperature #2 was intermittently incorrect.
The cause is unknown.

The indicated measurements that are calculated using 
soil temperature are also incorrect.

Soil moisture #2 (30 minute only) was also affected 
because version 6 of the EBBR datalogger program 
uses a multiplication of soil temperature and soil 
moisture as part of the adjustment of soil moisture for
soil temperature.  This was discovered to be a poor 
technique soon after it was implemented, but E2 will
continue to use version 6 until a replacement EBBR
unit is available.  When soil temperature #2 is large
negative, soil moisture #2 is often twice as large
as it should be.

EBBR unit changeout dates are listed on the EBBR 
instrument web page.

• soil_temp_2_rr

• soil_moisture_2
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_2
• energy_storage_change_2
• soil_temp_2
• 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/E2 - EBBR E2 Wind Speed Sensors Frozen

Wind speed sensors were frozen stalled during this period.
Wind speed was frozen from 0700 through 1845 GMT.
Data values that were affected were:

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

• Wind speed arithmetic mean(wspd_arith_mean)

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

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

SGP/EBBR/E2 - AEM Hung

The automatic exchange mechanism hung, thereby making a number of measurements incorrect.

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

• temp_air_right
• temp_air_left

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

SGP/EBBR/E2 - Wind Direction Incorrect

The wind direction was always 65 to 90 degrees and sigma direction was near zero; the data 
is incorrect.

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

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

SGP/EBBR/E2 - Reprocess: Soil Temperature #2 Incorrect

The indicated measurements were incorrect because soil temperature #2 was incorrect.

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

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_2
• energy_storage_change_2
• soil_temp_2
• 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/E2 - Data Incorrect

The indicated measurements were zeros (30 minute) or incorrect (5 and 15 minute) the half 
hour after the recalibration unit was installed.

• Raw data stream - documentation not supported

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

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

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

SGP/EBBR/E2 - 6 Month Checks

The indicated measurements were incorrect during the 6 month checks.

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

• temp_air_right
• temp_air_left

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

SGP/EBBR/E2 - 6 Month Checks

The indicated measurements were incorrect during the 6 month checks.

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

• temp_air_right
• temp_air_left

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

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/E2 - Data Incorrect during 6 month checks

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

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

• temp_air_right
• temp_air_left

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

SGP/EBBR/E2 - REPROCESS: Soil Heat Flow #2 Incorrect

Soil Heat Flow #2 was incorrect during these periods.  See below for a 
work-around.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_2
• corr_soil_heat_flow_2
• soil_heat_flow_2
• 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/E2 -   6 Month Checks

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

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

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

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

SGP/EBBR/E2  - Soil Heat Flow #2 Incorrect

Soil Heat Flow #2 producing incorrect values much of the time.  Average soil heat flow, 
sensible heat flux, and latent heat flux were affected.

• soil_heat_flow_2_mv

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_2
• corr_soil_heat_flow_2
• soil_heat_flow_2
• 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/E2  - Data All Zeros

All data (5, 15, and 30 minute) were zero after replacement of a sensor and restart of the 
CR10.

This is a common occurrence.

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

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

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

SGP/EBBR/E2  -   Bottom RH Incorrect

The bottom RH was zero (and incorrect) for this period.

• rh_bottom_fraction

• rh_bottom_fraction

SGP/EBBR/E2 - Soil Heat Flow #1 Incorrect

Soil Heat Flow #1 was very large most of the period.

See below for a work-around.

• soil_heat_flow_1_mv

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_1
• corr_soil_heat_flow_1
• soil_heat_flow_1
• 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/E2 - Soil Heat Flow #3 Spike

Soil heat flow #3 spiked to a value much greater than the other soil heat 
flows.  However, this did not affect sensible and latent heat fluxes outside
the error of the EBBR system.

• corr_soil_heat_flow_3
• soil_heat_flow_3

• soil_heat_flow_3_mv

SGP/EBBR/E2 - Water in Net Radiometer, Surface Fluxes Incorrect

Water got inside the bird-pecked hole in the net radiometer during a rain.

The net radiation and therefore latent and sensible heat fluxes are 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)

• net_radiation_mv

• Radiation, net(net_radiation)

SGP/EBBR/E2  - 15 and 30 Minute Data are Zeros

15 and 30 minute measurements were zero after restarting the CR10 datalogger.

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

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

SGP/EBBR/E2  - Soil Heat #1 Offscale

Soil Heat Flow #1 was intermittently offscale.  The reason is not clear.

• soil_heat_flow_1_mv

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_1
• corr_soil_heat_flow_1
• soil_heat_flow_1
• 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/E2 - 6 Month Checks

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

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

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

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

SGP/EBBR/E2 - All Data Zero After Logger Restart

All data was zero for the 5, 15, and 30 minute datastreams.

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

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

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

SGP/EBBR/E2 - Net Radiometer Iced Over During Storm

The net radiometer was covered with ice from a storm.  Net radiation values are incorrect, 
and are sometimes even negative during the daytime.  Sensible and latent heat fluxes are 
therefore 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)

• net_radiation_mv

• Radiation, net(net_radiation)

SGP/EBBR/E2  - 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 arithmetic mean(wspd_arith_mean)

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

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

SGP/EBBR/E2 - Soil Heat Flow #1 Spikes Down

Soil heat flow #1 spiked down at times.

Since tightening of connections this is occurring infrequently.  In most
cases, sensible and latent heat fluxes are not affected.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_1
• corr_soil_heat_flow_1
• soil_heat_flow_1
• 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/E2 - Net Radiometer Dome Broken, Reducing Net Radiation Measurement, Fluxes 
Incorrect

The upper dome of the net radiometer was broken.  Normally this alone does
not affect the net radiation measurement.  However, in this case the 
breakage must have been more than just a bird claw hole or a crack,
resulting in obstruction of the top sensing surface of the net radiometer
and greatly reduced net radiation measurements.

Sensible and latent heat fluxes were reduced as a result.

• 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/E2 - Soil Heat Flow Sensor #2 Bad

Soil Heat Flow sensor #2 spiked downwards at times for a while,
but eventually became negative continuously.

The problem was fixed when the sensor was replaced.

• soil_heat_flow_2_mv

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_2
• corr_soil_heat_flow_2
• soil_heat_flow_2
• 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/E2 - 6 Month Checks

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

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

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

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

SGP/EBBR/E2  - 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 arithmetic mean(wspd_arith_mean)

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

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

SGP/EBBR/E2  - 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 mean(wdir_vec_mean)
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)

• wdir_vec_mean_mv

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

SGP/EBBR/E2  - 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 arithmetic mean(wspd_arith_mean)

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

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

SGP/EBBR/E2  - 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 mean(wdir_vec_mean)
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)

• wdir_vec_mean_mv

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

SGP/EBBR/E2 - Improved EBBR CR10 Program

Effective 20050324.1700, the EBBR.E2 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 20050324, 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 sgp30ebbrE2.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE2.a1).

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

SGP/EBBR/E2 - Net Radiation Incorrect; Latent and Sensible Heat Fluxes Incorrect

The top dome of the net radiometer was broken and water entered, causing incorrect net 
radiation measurements.  This resulted in incorrect sensible and latent heat fluxes.

• 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/E2 - 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.

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

SGP/EBBR/E2 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E2 data collected by ARM back to the installation of the 
instrument in May 1997. 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 moisture units (from "by volume" to "gravimetric")

• base_time

• base_time

• base_time

SGP/EBBR/E2 - Sensible and Latent Heat Fluxes Incorrect

The sensible and latent heat fluxes and the gradient measurements were incorrect during 
this period because the AEM did not switch positions properly.

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

• temp_air_right
• temp_air_left

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

SGP/EBBR/E2 - Wind Speed Sensor Frozen Stopped

Freezing rain froze the wind speed sensor to a stopped condition.

• Wind speed arithmetic mean(wspd_arith_mean)

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

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

SGP/EBBR/E2 - 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):

71-137, 223-289

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.

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

SGP/EBBR/E2 - Missing data

Data are missing and unrecoverable.

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

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

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

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

SGP/EBBR/E2 - Missing data

Data are missing and unrecoverable

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

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

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

SGP/EBBR/E2 - Windspeed sensor failure

The windspeed sensor developed an abnormally high wind speed threshold due to worn 
bearings.

Wind speeds were often measured to be too low.  Inspect the data to identify suspect time 
periods.

• Wind speed arithmetic mean(wspd_arith_mean)

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

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

SGP/EBBR/E2 - Net Radiation and Fluxes Incorrect

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

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

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

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

• temp_air_right
• rh_right_mv
• temp_trh_right_rr

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

SGP/EBBR/E2 - Low Supply Voltage

Low supply voltage caused incorrect and missing data during much of the period. 

This facility was decommissioned 10/20/2009 and maintenance was discontinued effective 
10/01/2009.

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

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

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

SGP/EBBR/E2 - EBBR Biannual Checks

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 these periods 
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 correct gradients.  Checks performed before or after the 
AEM is disabled also lead to some incorrect data.  Incorrect 5, 15 minute and 
half hour data occurs for periods indicated.

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

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

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

SGP/EBBR/E2 - EBBR E2 Half Hour Incorrect

During one half hour period all data is incorrect.  The problem appears to
be just a bad record as the two 15 minute periods during the half hour were
not affected.  The cause of the problem is unknown.

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

SGP/EBBR/E2 - Reprocess: E2 Soil Heat Flow #4 Incorrect - Replaced

Soil heat flow probe #4 produced intermittently large positive
and negative values from October 1997 until 3 January 1998, after
which the values remained high until the probe was replaced on
8 January 1998 at 1711 GMT.

The following data values were affected for the period listed
above (when soil heat flow #4 was large):

15 minute: mv_hft4
30 minute: shf4, c_shf4, g4, ave_shf, e, h

• soil_heat_flow_4_mv

• soil_heat_flow_4
• corr_soil_heat_flow_4
• surface_soil_heat_flux_4
• 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/E2 - EBBR Frozen Wind Speed

Wind speed cups were frozen during the indicated time periods. All 5,
15, and 30 minute data values indicated  are incorrect for the periods
listed.

• Wind speed arithmetic mean(wspd_arith_mean)

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

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

SGP/EBBR/E2 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown)

The EBBR AEM stopped exchanging because of icing at during this time
period.

The calculations of Bowen ratio, latent heat flux, and sensible heat
flux are incorrect for the time period indicated.  The other
measurements listed  are also incorrect for those times:

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

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

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

SGP/EBBR/E2 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected

The upper dome of the EBBR net radiometers was punctured.
After the puncture, water collected in the top and/or bottom dome.  The
water was removed and the dome was replaced during PM visits. 

 In some cases, the puncture and water resulted in incorrect data. 
Comparison with net radiation values from surrounding EBBR sites and the
SIRS is neccesary to determine if the EBBR net radiation data 
are correct or incorrect.

It is often difficult to tell from the data when the punctures occurred,
but they would have existed for no more than 2 weeks, since the domes
are checked during each two-weekly PM visit.

Incorrect net radiation data results in the latent heat flux and
sensible heat flux also being 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)

• net_radiation_mv

• Radiation, net(net_radiation)

SGP/EBBR/E2 - EBBR E2 Wind Direction Sensors Frozen

Wind direction sensors were frozen stalled during this period.
Wind direction from 0630 through 1100 GMT.  Data values that 
were affected were:

 5 minute: sigma_wd, wind_d
15 minute: mv_wind_d
30 minute: sigma_wd, wind_d

• Wind direction vector mean(wdir_vec_mean)
• wdir_vec_std

• wdir_vec_mean_mv

• wdir_vec_std
• Wind direction vector mean(wdir_vec_mean)

SGP/EBBR/E2 - EBBR E2 Incorrect Data

During the indicated period, when either home signal is in the hundreds, all
soil heat fluxes, soil moistures, net radiation, air temperatures, bowen 
ratio, sensible heat flux, and latent heat flux are incorrect.  This 
condition usually results from an AEM circuit problem that allows the home 
signals to go high and corrupts the data.  The cause has never been 
determined.

Comments added by Marv Wesely: 
David Cook said that this is a very rare occurence; it's happened about
three times in total for all EBBRs.  The problem might be on the circuit
boards (moisture?), but that is only a guess. The problem has always
disappeared by itself after a while.

• temp_air_right
• soil_heat_flow_4_mv
• soil_heat_flow_3_mv
• temp_air_left
• soil_moisture_5_r
• net_radiation_mv
• soil_heat_flow_1_mv
• soil_moisture_3_r
• soil_heat_flow_5_mv
• soil_heat_flow_2_mv
• soil_moisture_4_r
• soil_moisture_1_r
• soil_moisture_2_r

• corr_soil_heat_flow_5
• corr_soil_heat_flow_1
• corr_soil_heat_flow_2
• corr_soil_heat_flow_3
• corr_soil_heat_flow_4
• Radiation, net(net_radiation)
• temp_air_top
• soil_heat_flow_4
• soil_heat_flow_5
• soil_heat_flow_1
• soil_heat_flow_2
• soil_heat_flow_3
• soil_moisture_4
• soil_moisture_3
• soil_moisture_2
• soil_moisture_1
• temp_air_bottom
• surface_soil_heat_flux_1
• surface_soil_heat_flux_2
• bowen_ratio
• soil_moisture_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
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• temp_air_bottom
• Radiation, net(net_radiation)
• temp_air_top

SGP/EBBR/E2 - EBBR E2 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 these periods 
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 correct gradients.  Checks performed before 
or after the AEM is disabled also lead to some incorrect data.  Incorrect 5,
15 minute and half hour data occurs for the period indicated.

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

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

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

SGP/EBBR/E2 - EBBR E2 Six Month Checks

During EBBR 6 month checks (formally called 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 these periods 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 correct gradients.  Checks 
performed just before or after the AEM is disabled also lead to some 
incorrect data.  Incorrect 5, 15 minute and half hour data occurs for the 
period indicated.

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

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

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

SGP/EBBR/E2 - EBBR E2 Net Radiation Incorrect - Water in Bottom Dome

Water entered the net radiometer top dome through a hole made, probably,
by migrating birds (this happens every Spring and Autumn) and accumulated
in the bottom dome.  This causes nighttime net radiations to be too large
and daytime net radiations to be too small.  The data are therefore 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)

• net_radiation_mv

• Radiation, net(net_radiation)

SGP/EBBR/E2 - EBBR E2 Wind Speed Data Incorrect

The wind speed sensor was iced stopped by freezing rain, 
resulting in the following values being incorrect:

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

• Wind speed arithmetic mean(wspd_arith_mean)

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

• Raw data stream - documentation not supported

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

SGP/EBBR/E2 - Wind Speed Iced, Data Incorrect

The wind speed sensor was stopped by icing.  Wind speed data are incorrect.
The values are:

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

• Wind speed arithmetic mean(wspd_arith_mean)

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

• Raw data stream - documentation not supported

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