SGP/EBBR/E26 - Wind Speed Iced

The anemometer was frozen stopped by freezing rain.  Indicated data 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 E26 - Data Suspect, Low Battery Voltage

The data measurements are suspect because of low battery voltage.
Some measurements may be correct, but most are probably incorrect.
Large home signals indicate very low battery voltage is present.

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

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

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

• Raw data stream - documentation not supported

SGP EBBR E26 - All Data Incorrect

All data was incorrect during these periods for unknown reasons.
However, this tends to happen during preventative maintenance
visits if sensors have to be changed out or tested and the 
datalogger program is reloaded, or if the battery voltage is low.

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

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

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

• Raw data stream - documentation not supported

SGP EBBR E26 - AEM Inbetween, Data Incorrect

While the AEM was inbetween the correct measurement positions the measurements from the 
two levels were incorrect.

The sensible and latent heat fluxes and Bowen ratio were therefore incorrect also.

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

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

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

SGP EBBR E26 - Some Data Incorrect

The reference temperature sensor malfunctioned, causing all associated measurements to be 
incorrect.

• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• temp_air_top
• energy_storage_change_5
• temp_trh_bottom
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• temp_trh_top
• bowen_ratio
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• soil_temp_5
• soil_temp_4
• soil_temp_3
• soil_temp_2
• soil_temp_1
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_bottom
• temp_reference

• soil_temp_4_rr
• soil_temp_5_rr
• temp_air_left
• temp_reference_rr
• soil_temp_3_rr
• soil_temp_2_rr
• temp_air_right
• soil_temp_1_rr

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

SGP EBBR E26 - Data Incorrect During 6 Month Checks

The data was incorrect during the 6 month checks.

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

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

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

SGP EBBR E26 - Low Battery Voltage

During the indicated the period the battery voltage often dropped 
to 10.4 volts or below.  At voltages less than 10.5 volts none of
the selected measurements can be considered to be correct.  The battery
charging capacity was insufficient to maintain voltage at night.

If the battery voltage is less than 10.5 volts (see battery voltage in the
15 minute data files), do not use the data.

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

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

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

SGP EBBR E26 - Battery Voltage Low

The battery voltage often dropped below 10.5 volts. 

All data for voltages below 10.5 volts should be considered to be incorrect.

See the 15 minute data files, which contain the battery voltage, to 
determine when the data was incorrect.

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

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

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

SGP/EBBR/E26 - 6 Month Checks

The indicated measurements were incorrect during the 6 month checks.

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

• temp_air_right
• temp_air_left

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

SGP/EBBR/E26 - Measurements Zero

The measurements are often zero after a CR10 datalogger restart, as occurred here.

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

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

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

• Raw data stream - documentation not supported

SGP/EBBR/E26 - Multiplexer 2 Failure From High Temperature

Multiplexer 2 is failing during times of control box temperatures above 29 degrees C.  The 
failure begins in the last channel and progresses to lower channels as the temperature 
increases.  It has not yet been determined whether the failure is in the relays or a solid 
state component of the multiplexer.  This condition is probably due to the aging of the 
device and the millions of cycles that this 10 year old device has made.  More failures 
of this sort may occur in the future.  A cure is being sought aside from replacement of 
the multiplexers to prevent the problem.

The indicated measurements need to be inspected to determine which ones are usable.

• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• bowen_ratio
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• soil_heat_flow_3
• soil_heat_flow_5
• vapor_pressure_top
• soil_heat_flow_4
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_bottom
• surface_soil_heat_flux_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• corr_soil_heat_flow_5

• temp_air_right
• temp_air_left

• temp_air_top
• vapor_pressure_top
• vapor_pressure_bottom
• temp_air_bottom

SGP/EBBR/E26 - Data Incorrect during 6 month checks

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

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

• temp_air_right
• temp_air_left

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

SGP/EBBR/E26 - Measurements zero following logger restart

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

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

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

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

SGP/EBBR/E26 - Multiplexer Problem

One of the multiplexers exhibited dropouts of the channels, beginning
with the last channel at temperatures above about 30 C and moving backward
through the channels as the temperature rose. High temperatures affected the
switching speed of the multiplexer.  This is the first time that this behavior has been 
documented in a Campbell Scientific multiplexer. The multiplexer had
been in continuous field use for 10 years and had experienced probably more
switching cycles than what is normally expected of the device in that period.

The multiplexer was replaced to solve the problem.

• temp_air_bottom
• 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)
• surface_soil_heat_flux_2
• temp_air_top
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• surface_soil_heat_flux_3
• corr_soil_heat_flow_2
• surface_soil_heat_flux_4
• corr_soil_heat_flow_1
• corr_soil_heat_flow_5

• temp_air_right
• temp_air_left

• temp_air_top
• temp_air_bottom

SGP/EBBR/E26 - Water in broken Net Radiometer Dome

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

No work-around is possible for this situation.

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

• Radiation, net(net_radiation)

SGP/EBBR/E26 - Battery Voltage Low

When Battery Voltage drops below 10.5 volts, most 
measurements are suspect and some are often incorrect.

The user will need to inspect the data carefully to 
determine the useability of the data.

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

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

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

SGP/EBBR/E26 - AEM Hung

The AEM hung inbetween home positions during the period.  The Bowen ratio, gradient 
measurements, sensible heat flux, and latent heat flux are incorrect.

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

• temp_air_right
• temp_air_left

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

SGP/EBBR/E26 - Data zeros following logger restart

Most measurements were zero after restart of the CR10 datalogger,
after a calibration changeout of the EBBR unit.

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

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

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

SGP/EBBR/E26 - Left Air Temperature Incorrect

The left air temperature was incorrect during the period.  Poor electronic
connections may have caused this.

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

• temp_air_left

• vapor_pressure_bottom
• temp_air_top
• temp_air_bottom
• vapor_pressure_top

SGP/EBBR/E27 - Reference T Sensor Failure

The reference T sensor was not working much of the time, affecting 
all other temperature sensors.  Sensible and latent heat fluxes
were incorrect when this occurred.

• temp_air_top
• temp_reference
• temp_air_bottom

• temp_air_right
• temp_air_left
• temp_reference_rr

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

SGP/EBBR/E27 - Wind Direction Hung

The Wind Direction frequently hung at values in the 70s or 80s.

No other data was affected. Fluxes were not affected.

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

• wdir_vec_mean_mv

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

SGP/EBBR/E26 -Right Air Temperature Incorrect

One of the Right Air Temperature connections was loose, producing incorrect data.

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

• temp_air_right
• temp_air_left

• temp_air_top
• temp_air_bottom

SGP/EBBR/E26 -  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
• temp_trh_bottom
• temp_trh_top
• rh_top_fraction
• bowen_ratio
• rh_bottom_fraction
• 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)
• vapor_pressure_top
• vapor_pressure_bottom

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

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

SGP/EBBR/E27 -  6 Month Checks

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

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

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

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

SGP/EBBR/E27  - Water in Net Radiometer; Surface Fluxes are Incorrect

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

• Radiation, net(net_radiation)

• net_radiation_mv

• 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/E27 - Right Air Temperature Spiked Offscale

The right air temperature was going offscale at times.
This problem seemed to end without Site Ops. intervention.

• temp_air_top
• temp_air_bottom

• temp_air_right

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

SGP/EBBR/E27 - Missing data during system update

Some soil parameters were slightly incorrect since EBBR.E27 was 
                 installed in May 2003.  While the coefficients were being updated,
                 data collection was suspended resulting in missing data for the 
                 specified period.
                    No significant effects (1% or less) on the surface heat flux data 
                 would have occurred from using the slightly incorrect coefficients. 
                 Therefore, flagging of the surface flux data from the time of 
                 installation of E27 is unwarranted.

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

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

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

SGP/EBBR/E26 - AEM Home Signals Incorrect, Surface Fluxes Incorrect

During a preventative maintenance visit to perform the 6-month
calibrations, the home15 and home30 outputs began reading the
same as one another.  A fuse replacement and lubrication of the 
AEM sprockets on 11/13 corrected the problem.

During the interval specified, the home15, home30, and sensible
and latent heat fluxes are incorrect.

• temp_air_bottom
• temp_air_top
• temp_trh_bottom
• temp_trh_top
• bowen_ratio
• rh_top_fraction
• home_signal_30
• rh_bottom_fraction
• home_signal_15
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_bottom

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

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

SGP/EBBR/E27 - Right Air Temperature Spiked Offscale

The right air temperature was going offscale at times.

• temp_air_top
• temp_air_bottom

• temp_air_right

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

SGP/EBBR/E26 - 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
• temp_trh_bottom
• temp_trh_top
• rh_top_fraction
• bowen_ratio
• rh_bottom_fraction
• 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)
• vapor_pressure_top
• vapor_pressure_bottom

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

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

SGP/EBBR/E27 - 6 Month Checks

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

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

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

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

SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect

In a trip to E26, I found that a bad spark gap through which the barometer was powered was 
causing pressure measurements to be incorrect.  The pressure readings oscillated with 
the voltage of the EBBR battery.  During daytime the voltage and thus the pressure would 
increase and vice versa during dark hours.

Apparently only the positive side of the power supply was properly connected through the 
spark gap and thus the voltage received by the pressure sensor was lower than required to 
power it properly.  Under this condition the perssure measurement varies with voltage 
level.  The pressure measurements therefore had a diurnal signature and usually were 
incorrect.  

The decreased pressure during most times would cause latent heat flux to be slightly 
overestimated and sensible heat flux to be slightly underestimated.

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

• atmos_pressure_mv

• Barometric Pressure(atmos_pressure)

SGP/EBBR/E26  - 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/E26  - Wind Direction Sensor Frozen By Ice Storm

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

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

• wdir_vec_mean_mv

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

SGP/EBBR/E27  - 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/E26  - 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/E26  - 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)
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)

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

SGP/EBBR/E27  - Right Air Temperature Incorrect

The right air temperature, and therefore top and bottom air temperatures
were offscale or incorrect on occasion.  Bowen ratio, sensible heat flux, and latent heat 
flux were also incorrect during those times.

Inspection of the data is required to detect the incorrect periods.

• temp_air_top
• temp_air_bottom

• temp_air_right

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

SGP/EBBR/E27 - Loose Tair Left Connections

Tair left dropped out at times. When this occurred, the sensible and latent heat fluxes 
are incorrect.

Tightening of the electronic connections to the datalogging equipment
appears to have solved the problem.

• temp_air_top
• temp_air_bottom

• temp_air_left

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

SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect

In a trip to E26, I found that a bad spark gap through which the barometer was powered was 
causing pressure measurements to be incorrect.  The pressure readings oscillated with 
the voltage of the EBBR battery.  During daytime the voltage and thus the pressure would 
increase and vice versa during dark hours.

Apparently only the positive side of the power supply was properly connected through the 
spark gap and thus the voltage received by the pressure sensor was lower than required to 
power it properly.  Under this condition the perssure measurement varies with voltage 
level.  The pressure measurements therefore had a diurnal signature and usually were 
incorrect.  

The decreased pressure during most times would cause latent heat flux to be slightly 
overestimated and sensible heat flux to be slightly underestimated.

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

• atmos_pressure_mv

• Barometric Pressure(atmos_pressure)

SGP/EBBR/E26 - 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
• temp_trh_bottom
• temp_trh_top
• rh_top_fraction
• bowen_ratio
• rh_bottom_fraction
• 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)
• vapor_pressure_top
• vapor_pressure_bottom

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

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

SGP/EBBR/E27 - 6 Month Checks

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

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

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

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

SGP/EBBR/E26 - Low Battery Voltage - Many Measurements Incorrect

During low battery voltage conditions (< 10.5 V especially) many measurements are 
incorrect.

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

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

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

SGP/EBBR/E26 - Most Measurements Incorrect

Most of the measurements became either too large or too small.
The cause is not known.

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

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

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

SGP/EBBR/E26  - 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/E27  - 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, 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/E26  - 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)
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)

• wdir_vec_mean_mv

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

SGP/EBBR/E27  - 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)
• wdir_vec_std
• Wind speed vector mean(wspd_vec_mean)

• wdir_vec_mean_mv

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

SGP/EBBR/E26 - Aging Pressure Sensor Output Changes
With Supply Voltage

The E26 EBBR pressure sensor experienced the poor internal voltage regulation problem 
experienced at other sites last year.  Aging of the internal voltage regulator caused the 
pressure output to drop by 1-2 kPa (0.1-0.5 kPa is normal) when the Sun rose and the solar 
panel goosed the battery voltage up.  

The sensible and latent heat fluxes were not significantly affected.

• Barometric Pressure(atmos_pressure)

• atmos_pressure_mv

• Barometric Pressure(atmos_pressure)

SGP/EBBR/E27 - Net Radiation Incorrect; Sensible and Latent Heat Fluxes Incorrect

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

• Radiation, net(net_radiation)

• net_radiation_mv

• 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/E27 - Net Radiation Incorrect; Sensible and Latent Heat Fluxes Incorredt

Residual Moisture left in the top dome of the net radiometer after the 8/17/05 servicing 
caused the net radiation measurements to be biased low, and resulting in sensible and 
latent heat flux being low also.

• Radiation, net(net_radiation)

• net_radiation_mv

• 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/E27 - metadata corrections

On 20050816, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E27 data collected by ARM back to the installation of the 
instrument in May 2003. 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/E26 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E26 data collected by ARM back to the installation of the 
instrument in June 1992. 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/E26 - Data Suspect During Low Supply Voltage

Low battery supply voltage resulted in high home signals and questionable data at times.
Data for battery voltage <10.5 volts should be considered to be incorrect.

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

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

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

SGP/EBBR/E27 - Sensible and Latent Heat Fluxes Incorrect

The left T/RH probe temperature sensor was spiking some of the time during these periods. 
Therefore, sensible and latent heat fluxes were incorrect during parts of the periods as 
well.

• vapor_pressure_top
• temp_trh_bottom
• temp_trh_top
• vapor_pressure_bottom

• temp_trh_left_rr

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

SGP/EBBR/E26 - Measurements Incorrect

Most measurements were incorrect during low battery voltage conditions.

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

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

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

SGP/EBBR/E27 - Flux and Gradient Measurements Incorrect

The sensible and latent heat flux and gradient measurements were incorrect
while the AEM was hung in one position.

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

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

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

SGP/EBBR/E27 - Field fire burned AEM

A fire in the E27 field burned the AEM, making it non-functional.
Sensible and latent heat fluxes and gradients were incorrect during this period.

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

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

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• home_signal_30
• rh_bottom_fraction
• home_signal_15
• rh_top_fraction
• temp_air_bottom
• temp_trh_bottom
• temp_trh_top
• vapor_pressure_top
• vapor_pressure_bottom
• bowen_ratio

SGP/EBBR/E27 - Low Battery Condition

A low battery condition caused most of the measurements to be incorrect.

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

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

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

SGP/EBBR/E27 - Most Measurements Suspect

The wrong EBBR program was used at this site.  Therefore, most of the measurements are 
suspect.

Note: Mentor reports reprocessing will not correct this problem.

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

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

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

SGP/EBBR/E27 - Battery Voltage Problem - Measurements Incorrect

Battery voltage was too low much of the time during the period, thus most measurements 
were incorrect during much of the time period.

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

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

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

SGP/EBBR/E27 - Multiplexer #2 failure

A problem with the #2 Multiplexer caused a large number of measurements to be incorrect.  
Sensible and latent heat fluxes were often affected.

• rh_top_fraction
• rh_bottom_fraction
• vapor_pressure_bottom
• temp_air_bottom
• temp_air_top
• Radiation, net(net_radiation)
• home_signal
• Barometric Pressure(atmos_pressure)
• vapor_pressure_top

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

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• soil_heat_flow_1
• surface_soil_heat_flux_2
• soil_heat_flow_2
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• surface_soil_heat_flux_5
• soil_heat_flow_5
• soil_heat_flow_3
• soil_heat_flow_4
• Radiation, net(net_radiation)
• home_signal_30
• rh_bottom_fraction
• rh_top_fraction
• surface_soil_heat_flux_1
• vapor_pressure_top
• corr_soil_heat_flow_1
• temp_air_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• home_signal_15
• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• bowen_ratio
• corr_soil_heat_flow_2
• vapor_pressure_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_4
• corr_soil_heat_flow_5

SGP/EBBR/E26 - Sensible and Latent Heat Fluxes Affected by bad temp sensor

The left Thum (temperature of the humidity sensor chamber) measurement was incorrect at 
times, affecting several measurements, including the sensible and latent heat fluxes.

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

• temp_trh_left_rr

• temp_trh_top
• temp_trh_bottom
• vapor_pressure_bottom
• vapor_pressure_top

SGP/EBBR/E26 - Wind Speed Incorrect

The wind speed sensor was frozen stopped by freezing rain.

• 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/E26 - Low supply voltage

Low supply voltage during much of the period resulted in missing or incorrect
data most of the time.

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

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

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