SGP/EBBR - EBBR E15 Anemometer Cup Off, Wind Speed Incorrect

An anemometer cup fell off.

The following values were therefore incorrect:

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

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean

SGP/EBBR- EBBR E15 Air Temperatures Incorrect

When the reference temperature sensor was being replaced, the left and
right thermocouple air temperatures and humidity probe temperatures 
were incorrect.

Affected data values were:

5 Minute:  tref, tair_top, tair_bot, thum_top, thum_bot, vp_top, vp_bot
15 minute: rr_tref, rr_thum_l, rr_thum_r, tair_r, tair_l
30 minute: tref, tair_top, tair_bot, thum_top, thum_bot, vp_top, vp_bot,
           bowen, e, h

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

• vapor_pressure_top
• temp_air_top
• sensible_heat_flux
• vapor_pressure_bottom
• temp_trh_top
• temp_reference
• temp_air_bottom
• latent_heat_flux
• bowen_ratio
• temp_trh_bottom

• temp_air_left
• temp_reference_rr
• temp_trh_right_rr
• temp_air_right
• temp_trh_left_rr

SGP/EBBR/E15 - EBBR E15 Wind Speed Iced

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

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean

SGP/EBBR/E15 - E15 EBBR Reference Temperature Incorrect

The reference temperature was incorrect during the indicated periods.  This
temperature is used to adjust air temperature measurements; therefore air
temperature and resulting sensible and latent heat fluxes and Bowen ratio 
are incorrect.

• temp_air_top
• temp_air_bottom
• temp_reference

• temp_air_bottom
• temp_reference
• latent_heat_flux
• bowen_ratio
• temp_air_top
• sensible_heat_flux

• temp_air_left
• temp_air_right
• temp_reference_rr

SGP/EBBR/E15 - E15 EBBR Data Incorrect

All of the measurements (except, battery voltage, time_offset, lat, lon, etc.) were 
incorrect during the installation of a new reference temperature sensor.

• temp_reference
• temp_air_top
• net_radiation
• rh_top_fraction
• rh_bottom_fraction
• temp_trh_bottom
• vapor_pressure_bottom
• wspd_vec_mean
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• wspd_arith_mean
• wdir_vec_mean
• vapor_pressure_top
• temp_air_bottom
• wdir_vec_std
• home_signal

• vapor_pressure_top
• sensible_heat_flux
• temp_trh_top
• temp_air_top
• temp_air_bottom
• soil_moisture_5
• soil_moisture_2
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• soil_temp_5
• soil_temp_2
• soil_temp_1
• soil_temp_4
• soil_temp_3
• latent_heat_flux
• home_signal_30
• soil_heat_capacity_4
• temp_trh_bottom
• soil_heat_capacity_5
• wspd_vec_mean
• vapor_pressure_bottom
• rh_top_fraction
• energy_storage_change_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• wspd_arith_mean
• rh_bottom_fraction
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• Barometric Pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• net_radiation
• soil_heat_flow_1
• soil_heat_capacity_1
• soil_heat_flow_3
• soil_heat_capacity_2
• soil_heat_flow_2
• soil_heat_capacity_3
• soil_heat_flow_5
• soil_heat_flow_4
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• wdir_vec_mean
• temp_reference
• wdir_vec_std

• null(Raw data stream - documentation not supported)

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

SGP/EBBR/E15 - E15 EBBR Data Missing

The data for this period was missing, during replacement of the reference temperature 
sensor.

• base time(base_time)
• temp_reference
• temp_air_top
• net_radiation
• rh_top_fraction
• Time offset of tweaks from base_time(time_offset)
• rh_bottom_fraction
• temp_trh_bottom
• vapor_pressure_bottom
• wspd_vec_mean
• lat(lat)
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• Dummy altitude for Zeb(alt)
• wspd_arith_mean
• wdir_vec_mean
• vapor_pressure_top
• temp_air_bottom
• lon(lon)
• wdir_vec_std
• home_signal

• vapor_pressure_top
• sensible_heat_flux
• temp_trh_top
• temp_air_top
• temp_air_bottom
• soil_moisture_5
• soil_moisture_2
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• soil_temp_5
• soil_temp_2
• soil_temp_1
• soil_temp_4
• lat(lat)
• soil_temp_3
• latent_heat_flux
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• Time offset of tweaks from base_time(time_offset)
• wspd_vec_mean
• vapor_pressure_bottom
• rh_top_fraction
• energy_storage_change_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• lon(lon)
• wspd_arith_mean
• rh_bottom_fraction
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• Barometric Pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• net_radiation
• bowen_ratio
• soil_heat_flow_1
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_heat_flow_5
• soil_heat_flow_4
• base time(base_time)
• Dummy altitude for Zeb(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• wdir_vec_mean
• temp_reference
• wdir_vec_std

• null(Raw data stream - documentation not supported)

• soil_heat_flow_1_mv
• battery_voltage
• temp_trh_right_rr
• soil_moisture_5_r
• temp_trh_left_rr
• atmos_pressure_mv
• soil_temp_2_rr
• temp_air_left
• soil_moisture_1_r
• lon(lon)
• soil_moisture_3_r
• soil_moisture_3_rr
• temp_reference_rr
• soil_moisture_2_rr
• wdir_vec_mean_mv
• rh_right_mv
• soil_temp_4_rr
• soil_temp_5_rr
• wspd_arith_mean
• home_signal
• soil_temp_1_rr
• soil_heat_flow_3_mv
• base time(base_time)
• soil_moisture_1_rr
• soil_heat_flow_2_mv
• soil_heat_flow_4_mv
• net_radiation_mv
• Dummy altitude for Zeb(alt)
• soil_moisture_4_rr
• soil_moisture_4_r
• soil_moisture_2_r
• temp_air_right
• rh_left_mv
• soil_temp_3_rr
• lat(lat)
• soil_heat_flow_5_mv
• Time offset of tweaks from base_time(time_offset)
• soil_moisture_5_rr

SGP/EBBR/E15 - E15 EBBR Data Incorrect

All of the measurements (except, battery voltage, time_offset, lat, lon, etc.) were 
incorrect during a logger upgrade.

• temp_reference
• temp_air_top
• net_radiation
• rh_top_fraction
• rh_bottom_fraction
• temp_trh_bottom
• vapor_pressure_bottom
• wspd_vec_mean
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• wspd_arith_mean
• wdir_vec_mean
• vapor_pressure_top
• temp_air_bottom
• wdir_vec_std
• home_signal

• vapor_pressure_top
• sensible_heat_flux
• temp_trh_top
• temp_air_top
• temp_air_bottom
• soil_moisture_5
• soil_moisture_2
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• soil_temp_5
• soil_temp_2
• soil_temp_1
• soil_temp_4
• soil_temp_3
• latent_heat_flux
• home_signal_30
• soil_heat_capacity_4
• temp_trh_bottom
• soil_heat_capacity_5
• wspd_vec_mean
• vapor_pressure_bottom
• rh_top_fraction
• energy_storage_change_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• wspd_arith_mean
• rh_bottom_fraction
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• Barometric Pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• net_radiation
• soil_heat_flow_1
• soil_heat_capacity_1
• soil_heat_flow_3
• soil_heat_capacity_2
• soil_heat_flow_2
• soil_heat_capacity_3
• soil_heat_flow_5
• soil_heat_flow_4
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• wdir_vec_mean
• temp_reference
• wdir_vec_std

• null(Raw data stream - documentation not supported)

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

SGP/EBBR/E15 - E15 EBBR Data Missing

The data for this period was missing, during an upgrade of the data logger.

• base time(base_time)
• temp_reference
• temp_air_top
• net_radiation
• rh_top_fraction
• Time offset of tweaks from base_time(time_offset)
• rh_bottom_fraction
• temp_trh_bottom
• vapor_pressure_bottom
• wspd_vec_mean
• lat(lat)
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• Dummy altitude for Zeb(alt)
• wspd_arith_mean
• wdir_vec_mean
• vapor_pressure_top
• temp_air_bottom
• lon(lon)
• wdir_vec_std
• home_signal

• vapor_pressure_top
• sensible_heat_flux
• temp_trh_top
• temp_air_top
• temp_air_bottom
• soil_moisture_5
• soil_moisture_2
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• soil_temp_5
• soil_temp_2
• soil_temp_1
• soil_temp_4
• lat(lat)
• soil_temp_3
• latent_heat_flux
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• Time offset of tweaks from base_time(time_offset)
• wspd_vec_mean
• vapor_pressure_bottom
• rh_top_fraction
• energy_storage_change_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• lon(lon)
• wspd_arith_mean
• rh_bottom_fraction
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• Barometric Pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• net_radiation
• bowen_ratio
• soil_heat_flow_1
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_heat_flow_5
• soil_heat_flow_4
• base time(base_time)
• Dummy altitude for Zeb(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• wdir_vec_mean
• temp_reference
• wdir_vec_std

• null(Raw data stream - documentation not supported)

• soil_heat_flow_1_mv
• battery_voltage
• temp_trh_right_rr
• soil_moisture_5_r
• temp_trh_left_rr
• atmos_pressure_mv
• soil_temp_2_rr
• temp_air_left
• soil_moisture_1_r
• lon(lon)
• soil_moisture_3_r
• soil_moisture_3_rr
• temp_reference_rr
• soil_moisture_2_rr
• wdir_vec_mean_mv
• rh_right_mv
• soil_temp_4_rr
• soil_temp_5_rr
• wspd_arith_mean
• home_signal
• soil_temp_1_rr
• soil_heat_flow_3_mv
• base time(base_time)
• soil_moisture_1_rr
• soil_heat_flow_2_mv
• soil_heat_flow_4_mv
• net_radiation_mv
• Dummy altitude for Zeb(alt)
• soil_moisture_4_rr
• soil_moisture_4_r
• soil_moisture_2_r
• temp_air_right
• rh_left_mv
• soil_temp_3_rr
• lat(lat)
• soil_heat_flow_5_mv
• Time offset of tweaks from base_time(time_offset)
• soil_moisture_5_rr

SGP/EBBR/E15 - E15 EBBR Some Soil Temperatures and Heat Flows Incorrect

For an unknown reason, some of the soil temperatures and soil heat flows
were incorrect, leading to many of the calculated quantities being incorrect.

• soil_temp_5
• soil_temp_2
• sensible_heat_flux
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• latent_heat_flux
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• soil_heat_flow_1
• soil_heat_flow_3
• energy_storage_change_1
• soil_heat_flow_2
• soil_heat_flow_5
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5

• soil_heat_flow_1_mv
• soil_temp_5_rr
• soil_temp_2_rr
• soil_heat_flow_3_mv
• soil_heat_flow_2_mv
• soil_heat_flow_5_mv

SGP/EBBR/E15 - E15 EBBR Some Soils and Flux Data Incorrect

The soil heat capacity measurements were incorrect for an unknown reason, resulting in 
incorrect average soil heat flow and latent and sensible heat fluxes.

• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• sensible_heat_flux
• surface_soil_heat_flux_5
• surface_soil_heat_flux_avg
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• latent_heat_flux
• soil_heat_capacity_4
• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_2
• energy_storage_change_1
• soil_heat_capacity_3
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP/EBBR/E15 - E15 EBBR AEM Stuck in Middle

When the AEM does not complete switching and becomes hung at a mid
position, the indicated data measurements are incorrect.

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

• vapor_pressure_top
• rh_bottom_fraction
• sensible_heat_flux
• temp_trh_top
• latent_heat_flux
• temp_trh_bottom
• temp_air_top
• vapor_pressure_bottom
• rh_top_fraction
• temp_air_bottom
• bowen_ratio

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

SGP/EBBR/E15 - E15 EBBR AEM Replacement

Large home signals occured while the AEM was being replaced; 
the indicated data measurements are incorrect.

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

• vapor_pressure_top
• rh_bottom_fraction
• sensible_heat_flux
• temp_trh_top
• latent_heat_flux
• temp_trh_bottom
• temp_air_top
• vapor_pressure_bottom
• rh_top_fraction
• temp_air_bottom
• bowen_ratio

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

SGP/EBBR/E15 - E15 EBBR Battery Voltage Low

When EBBR battery voltage is 10.4 volts or less, the measurements
are considered to be incorrect.

• temp_reference
• temp_air_top
• net_radiation
• rh_top_fraction
• rh_bottom_fraction
• temp_trh_bottom
• vapor_pressure_bottom
• wspd_vec_mean
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• wspd_arith_mean
• wdir_vec_mean
• vapor_pressure_top
• temp_air_bottom
• wdir_vec_std

• vapor_pressure_top
• sensible_heat_flux
• temp_trh_top
• temp_air_top
• temp_air_bottom
• soil_moisture_5
• soil_moisture_2
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• soil_temp_5
• soil_temp_2
• soil_temp_1
• soil_temp_4
• soil_temp_3
• latent_heat_flux
• home_signal_30
• soil_heat_capacity_4
• temp_trh_bottom
• soil_heat_capacity_5
• wspd_vec_mean
• vapor_pressure_bottom
• rh_top_fraction
• energy_storage_change_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• wspd_arith_mean
• rh_bottom_fraction
• surface_soil_heat_flux_5
• Barometric Pressure(atmos_pressure)
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• home_signal_15
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• net_radiation
• soil_heat_flow_1
• soil_heat_capacity_1
• soil_heat_flow_3
• soil_heat_capacity_2
• soil_heat_flow_2
• soil_heat_capacity_3
• soil_heat_flow_5
• soil_heat_flow_4
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• wdir_vec_mean
• temp_reference
• wdir_vec_std

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

SGP/EBBR/E15 - E15 EBBR Incorrect Net Radiation

Incorrect net radiation resulted in incorrect sensible and latent heat fluxes.

• net_radiation

• latent_heat_flux
• net_radiation
• sensible_heat_flux

• net_radiation_mv

SGP EBBR E15 - E15 EBBR Data Incorrect During 6 Month Checks

The data was incorrect during the 6 month checks.

• temp_reference
• temp_air_top
• net_radiation
• rh_top_fraction
• rh_bottom_fraction
• temp_trh_bottom
• vapor_pressure_bottom
• wspd_vec_mean
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• wspd_arith_mean
• wdir_vec_mean
• vapor_pressure_top
• temp_air_bottom
• wdir_vec_std

• vapor_pressure_top
• sensible_heat_flux
• temp_trh_top
• temp_air_top
• temp_air_bottom
• soil_moisture_5
• soil_moisture_2
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• soil_temp_5
• soil_temp_2
• soil_temp_1
• soil_temp_4
• soil_temp_3
• latent_heat_flux
• soil_heat_capacity_4
• temp_trh_bottom
• soil_heat_capacity_5
• wspd_vec_mean
• vapor_pressure_bottom
• rh_top_fraction
• energy_storage_change_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• wspd_arith_mean
• rh_bottom_fraction
• surface_soil_heat_flux_5
• Barometric Pressure(atmos_pressure)
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• soil_heat_flow_1
• bowen_ratio
• net_radiation
• soil_heat_capacity_1
• soil_heat_flow_3
• soil_heat_capacity_2
• soil_heat_flow_2
• soil_heat_capacity_3
• soil_heat_flow_5
• soil_heat_flow_4
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• wdir_vec_mean
• temp_reference
• wdir_vec_std

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

SGP EBBR E15 - E15 EBBR Battery Voltage Low, Data Incorrect

When the battery voltage is 10.4 volts or below, all selected data should be considered to 
be incorrect.  See the battery voltage in the 15 minute data to determine times of 
incorrect data.

• temp_reference
• temp_air_top
• net_radiation
• rh_top_fraction
• rh_bottom_fraction
• temp_trh_bottom
• vapor_pressure_bottom
• wspd_vec_mean
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• wspd_arith_mean
• wdir_vec_mean
• vapor_pressure_top
• temp_air_bottom
• wdir_vec_std
• home_signal

• vapor_pressure_top
• sensible_heat_flux
• temp_trh_top
• temp_air_top
• temp_air_bottom
• soil_moisture_5
• soil_moisture_2
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• soil_temp_5
• soil_temp_2
• soil_temp_1
• soil_temp_4
• soil_temp_3
• latent_heat_flux
• home_signal_30
• soil_heat_capacity_4
• temp_trh_bottom
• soil_heat_capacity_5
• wspd_vec_mean
• vapor_pressure_bottom
• rh_top_fraction
• energy_storage_change_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• wspd_arith_mean
• rh_bottom_fraction
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• Barometric Pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• net_radiation
• soil_heat_flow_1
• soil_heat_capacity_1
• soil_heat_flow_3
• soil_heat_capacity_2
• soil_heat_flow_2
• soil_heat_capacity_3
• soil_heat_flow_5
• soil_heat_flow_4
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• wdir_vec_mean
• temp_reference
• wdir_vec_std

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

SGP EBBR E15 - E15 EBBR Data Zeros Incorrect

The data was all zeros after a logger restart for 5 , 15, and 30 minute periods.

• temp_reference
• temp_air_top
• net_radiation
• rh_top_fraction
• rh_bottom_fraction
• temp_trh_bottom
• vapor_pressure_bottom
• wspd_vec_mean
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• wspd_arith_mean
• wdir_vec_mean
• vapor_pressure_top
• temp_air_bottom
• wdir_vec_std
• home_signal

• vapor_pressure_top
• sensible_heat_flux
• temp_trh_top
• temp_air_top
• temp_air_bottom
• soil_moisture_5
• soil_moisture_2
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• soil_temp_5
• soil_temp_2
• soil_temp_1
• soil_temp_4
• soil_temp_3
• latent_heat_flux
• home_signal_30
• soil_heat_capacity_4
• temp_trh_bottom
• soil_heat_capacity_5
• wspd_vec_mean
• vapor_pressure_bottom
• rh_top_fraction
• energy_storage_change_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• wspd_arith_mean
• rh_bottom_fraction
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• Barometric Pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• net_radiation
• soil_heat_flow_1
• soil_heat_capacity_1
• soil_heat_flow_3
• soil_heat_capacity_2
• soil_heat_flow_2
• soil_heat_capacity_3
• soil_heat_flow_5
• soil_heat_flow_4
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• wdir_vec_mean
• temp_reference
• wdir_vec_std

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

SGP EBBR E15 - E15 EBBR Recalibration Changeout

During the indicated period the EBBR unit was being changed out with a
recalibrated unit.  All data is incorrect or missing.

Unit #14 was removed; #6 was installed.

• base time(base_time)
• temp_reference
• temp_air_top
• net_radiation
• rh_top_fraction
• Time offset of tweaks from base_time(time_offset)
• rh_bottom_fraction
• temp_trh_bottom
• vapor_pressure_bottom
• wspd_vec_mean
• lat(lat)
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• Dummy altitude for Zeb(alt)
• wspd_arith_mean
• wdir_vec_mean
• vapor_pressure_top
• temp_air_bottom
• lon(lon)
• wdir_vec_std
• home_signal

• vapor_pressure_top
• sensible_heat_flux
• temp_trh_top
• temp_air_top
• temp_air_bottom
• soil_moisture_5
• soil_moisture_2
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• soil_temp_5
• soil_temp_2
• soil_temp_1
• soil_temp_4
• lat(lat)
• soil_temp_3
• latent_heat_flux
• home_signal_30
• soil_heat_capacity_4
• temp_trh_bottom
• soil_heat_capacity_5
• Time offset of tweaks from base_time(time_offset)
• wspd_vec_mean
• vapor_pressure_bottom
• rh_top_fraction
• energy_storage_change_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• lon(lon)
• wspd_arith_mean
• rh_bottom_fraction
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• Barometric Pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• net_radiation
• bowen_ratio
• soil_heat_flow_1
• soil_heat_capacity_1
• soil_heat_flow_3
• soil_heat_capacity_2
• soil_heat_flow_2
• soil_heat_capacity_3
• soil_heat_flow_5
• soil_heat_flow_4
• base time(base_time)
• Dummy altitude for Zeb(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• wdir_vec_mean
• temp_reference
• wdir_vec_std

• null(Raw data stream - documentation not supported)

• soil_heat_flow_1_mv
• battery_voltage
• temp_trh_right_rr
• temp_trh_left_rr
• atmos_pressure_mv
• soil_temp_2_rr
• temp_air_left
• lon(lon)
• soil_moisture_3_rr
• temp_reference_rr
• soil_moisture_2_rr
• wdir_vec_mean_mv
• rh_right_mv
• soil_temp_4_rr
• soil_temp_5_rr
• wspd_arith_mean
• home_signal
• soil_temp_1_rr
• soil_heat_flow_3_mv
• base time(base_time)
• soil_moisture_1_rr
• soil_heat_flow_2_mv
• soil_heat_flow_4_mv
• net_radiation_mv
• Dummy altitude for Zeb(alt)
• soil_moisture_4_rr
• temp_air_right
• rh_left_mv
• soil_temp_3_rr
• lat(lat)
• soil_heat_flow_5_mv
• Time offset of tweaks from base_time(time_offset)
• soil_moisture_5_rr

SGP/EBBR/E15 - Data Incorrect During 6 Month Checks

The data was incorrect during the 6 month checks.

• temp_reference
• temp_air_top
• net_radiation
• rh_top_fraction
• rh_bottom_fraction
• temp_trh_bottom
• vapor_pressure_bottom
• wspd_vec_mean
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• wspd_arith_mean
• wdir_vec_mean
• vapor_pressure_top
• temp_air_bottom
• wdir_vec_std
• home_signal

• vapor_pressure_top
• sensible_heat_flux
• temp_trh_top
• temp_air_top
• temp_air_bottom
• soil_moisture_5
• soil_moisture_2
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• soil_temp_5
• soil_temp_2
• soil_temp_1
• soil_temp_4
• soil_temp_3
• latent_heat_flux
• home_signal_30
• soil_heat_capacity_4
• temp_trh_bottom
• soil_heat_capacity_5
• wspd_vec_mean
• vapor_pressure_bottom
• rh_top_fraction
• energy_storage_change_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• wspd_arith_mean
• rh_bottom_fraction
• surface_soil_heat_flux_5
• Barometric Pressure(atmos_pressure)
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• home_signal_15
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• net_radiation
• soil_heat_flow_1
• soil_heat_capacity_1
• soil_heat_flow_3
• soil_heat_capacity_2
• soil_heat_flow_2
• soil_heat_capacity_3
• soil_heat_flow_5
• soil_heat_flow_4
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• wdir_vec_mean
• temp_reference
• wdir_vec_std

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

SGP/EBBR/E15 - T/RH Check

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

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

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


Data Fields

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

5 minute:  1650, 1655, 1700, 1705, 1710, 1715, 1720, 1725, 1730,
           1735, 1740, 1745, 1750, 1755, 1800, 1805
15 minute: 1700, 1715, 1730, 1745, 1800, 1815
30 minute: 1700, 1730, 1800, 1830

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

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

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

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

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

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

• vapor_pressure_top
• rh_bottom_fraction
• sensible_heat_flux
• temp_trh_top
• latent_heat_flux
• temp_trh_bottom
• temp_air_top
• vapor_pressure_bottom
• rh_top_fraction
• temp_air_bottom
• bowen_ratio

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

SGP/EBBR/E15 - 3-month Check

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

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

• vapor_pressure_top
• rh_bottom_fraction
• sensible_heat_flux
• temp_trh_top
• latent_heat_flux
• temp_trh_bottom
• temp_air_top
• vapor_pressure_bottom
• rh_top_fraction
• temp_air_bottom
• bowen_ratio

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

SGP/EBBR/E15 - 6 Month Checks

The indicated measurements were incorrect during the 6 month checks.

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

• vapor_pressure_top
• rh_bottom_fraction
• temp_air_top
• sensible_heat_flux
• vapor_pressure_bottom
• temp_trh_top
• rh_top_fraction
• temp_air_bottom
• latent_heat_flux
• bowen_ratio
• temp_trh_bottom

• temp_air_left
• temp_air_right

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

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

This does not affect the data quality.

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_5
• soil_heat_capacity_4

• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_1

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_1

• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_5
• soil_heat_capacity_3
• soil_heat_capacity_4

• soil_heat_capacity_5
• soil_heat_capacity_2
• soil_heat_capacity_1
• soil_heat_capacity_4
• soil_heat_capacity_3

• soil_heat_capacity_2
• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_4
• soil_heat_capacity_5
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_1

• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5
• soil_heat_capacity_1

• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_1

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

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

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

• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_1

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_5
• soil_heat_capacity_3
• soil_heat_capacity_4

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_2
• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_1

• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2

• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_1

• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5
• soil_heat_capacity_1

SGP/EBBR/E15 - Data Incorrect during 6 month checks

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

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

• vapor_pressure_top
• rh_bottom_fraction
• temp_air_top
• sensible_heat_flux
• vapor_pressure_bottom
• temp_trh_top
• rh_top_fraction
• temp_air_bottom
• latent_heat_flux
• bowen_ratio
• temp_trh_bottom

• temp_air_left
• temp_air_right

SGP/EBBR/E15 - REPROCESS: Soil Moisture #1 Offset

The wrong offset (9.5264) was used in the calibration coefficients for
Soil Moisture Probe #1. The correct offset is 0.95264.

Sensible and Latent Heat Flux measurements are not significantly affected.

• soil_moisture_1

SGP/EBBR/E15 - Data Mostly Zero Following Logger Restart

Most of the measurements were zero, which normally happens after a 
datalogger restart.  The restart on 07/22/02 occurred after a pressure
sensor replacement.

• temp_reference
• temp_air_top
• net_radiation
• rh_top_fraction
• rh_bottom_fraction
• temp_trh_bottom
• vapor_pressure_bottom
• wspd_vec_mean
• temp_trh_top
• Barometric Pressure(atmos_pressure)
• wspd_arith_mean
• wdir_vec_mean
• vapor_pressure_top
• temp_air_bottom
• wdir_vec_std
• home_signal

• vapor_pressure_top
• sensible_heat_flux
• temp_trh_top
• temp_air_top
• temp_air_bottom
• soil_moisture_5
• soil_moisture_2
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• soil_temp_5
• soil_temp_2
• soil_temp_1
• soil_temp_4
• soil_temp_3
• latent_heat_flux
• home_signal_30
• soil_heat_capacity_4
• temp_trh_bottom
• soil_heat_capacity_5
• wspd_vec_mean
• vapor_pressure_bottom
• rh_top_fraction
• energy_storage_change_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• wspd_arith_mean
• rh_bottom_fraction
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• Barometric Pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• net_radiation
• soil_heat_flow_1
• soil_heat_capacity_1
• soil_heat_flow_3
• soil_heat_capacity_2
• soil_heat_flow_2
• soil_heat_capacity_3
• soil_heat_flow_5
• soil_heat_flow_4
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• wdir_vec_mean
• temp_reference
• wdir_vec_std

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

SGP/EBBR/E15 - Pressure Low

The pressure measurements were too low during this period, as much as 40
mb too low.  This occurred after a restart of the
EBBR CR10 datalogger, for unknown reasons.

• Barometric Pressure(atmos_pressure)

• Barometric Pressure(atmos_pressure)

SGP/EBBR/E15 -  6 Month Checks

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

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

• vapor_pressure_top
• rh_bottom_fraction
• sensible_heat_flux
• temp_trh_top
• latent_heat_flux
• temp_trh_bottom
• temp_air_top
• vapor_pressure_bottom
• rh_top_fraction
• temp_air_bottom
• bowen_ratio

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

SGP/EBBR/E15 - Wind Direction 10 Degrees Low

The wind direction at E15 EBBR was 10 degrees low for the period (since
installation of the EBBR unit on 10/11/01). The wind direction sensor was apparently 
aligned to magnetic north instead of true north at installation.

• wdir_vec_mean

• wdir_vec_mean

• wdir_vec_mean_mv

SGP/EBBR/E15 - Top Humidity reported as zero in 30 minute data.

The top relative humidity was reported as zero in the 30 minute data.
This is an apparent misreporting by the CR10 datalogger or is caused by
a communications problem in accessing the data from the datalogger.  It is very 
infrequently seen; it's actual cause is unknown. No other data was
affected.

• rh_top_fraction

SGP/EBBR/E15 - Reference Temperature Failed

The reference temperature failed, making air temperatures,
e, h, and Bowen ratio incorrect.

• temp_air_top
• temp_air_bottom

• temp_air_bottom
• latent_heat_flux
• bowen_ratio
• temp_air_top
• sensible_heat_flux

• temp_air_left
• temp_air_right

SGP/EBBR/E15  - Water In Net Radiometer, Surface Fluxes Incorrect

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

• net_radiation

• latent_heat_flux
• net_radiation
• sensible_heat_flux

• net_radiation_mv

SGP/EBBR/E15  - Soil Temperature #5 Incorrect, Surface Fluxes Incorrect

Soil Temperature #5 was incorrect.

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

• surface_soil_heat_flux_5
• surface_soil_heat_flux_avg
• soil_temp_5
• latent_heat_flux
• sensible_heat_flux
• energy_storage_change_5

• soil_temp_5_rr

SGP/EBBR/E15 - Soil Temperature #5 Incorrect, Surface Fluxes Incorrect

Soil Temperature #5 was incorrect.

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

• surface_soil_heat_flux_5
• surface_soil_heat_flux_avg
• soil_temp_5
• latent_heat_flux
• sensible_heat_flux
• energy_storage_change_5

• soil_temp_5_rr

SGP/EBBR/E15 - AEM Hung Between Home Positions, Surface Fluxes Incorrect

The AEM was hung inbetween home positions.

Therefore the sensible and latent heat fluxes are also incorrect.

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

• vapor_pressure_top
• rh_bottom_fraction
• sensible_heat_flux
• temp_trh_top
• latent_heat_flux
• home_signal_30
• temp_trh_bottom
• home_signal_15
• temp_air_top
• vapor_pressure_bottom
• rh_top_fraction
• temp_air_bottom
• bowen_ratio

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

SGP/EBBR/E15 - 6 Month Checks

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

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

• vapor_pressure_top
• rh_bottom_fraction
• sensible_heat_flux
• temp_trh_top
• latent_heat_flux
• temp_trh_bottom
• temp_air_top
• vapor_pressure_bottom
• rh_top_fraction
• temp_air_bottom
• bowen_ratio

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

SGP/EBBR/E15  - 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.

• net_radiation

• latent_heat_flux
• net_radiation
• sensible_heat_flux

• net_radiation_mv

SGP/EBBR/E15  - 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.

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean

SGP/EBBR/E15 - Wind Direction About 130 Degrees Low

The EBBR wind direction sensor developed an approximately -130 degree offset. The pin 
holding the vane to the shaft had fallen out.

• wdir_vec_mean
• wspd_vec_mean
• wdir_vec_std

• wdir_vec_std
• wdir_vec_mean
• wspd_vec_mean

• wdir_vec_mean_mv

SGP/EBBR/E15 - Net Radiometer not level

The EBBR net radiometer at E15 was suspected to be off of level
               because the daily peak net radiation was recorded later than it 
               was recorded by the SIRS.

               Site Ops found the EBBR net radiometer at E15 was significantly 
               off of level (1/2 bubble tipped to the north).  Adjustment of 
               the level improved the comparison of peak time with the 
               co-located SIRS.

               There was no significant effect on the sensible and latent heat 
               fluxes.

• net_radiation

• net_radiation

SGP/EBBR/E15  - 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.

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean

SGP/EBBR/E15 - Wind Speed Incorrect

The cups were broken off of the wind speed sensor by hail on 4/23/04. The cups were 
replaced on 4/27/04.  Wind speed measurements were near zero and incorrect during the indicated 
period.

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean
• wspd_vec_mean

• vector wind speed(res_ws)
• scalar wind speed(wind_s)

• wspd_arith_mean

SGP/EBBR/E15 - Soil Moisture Coefficients Incorrect

The soil Moisture coefficients used for E15 were incorrect from the time of
installation of the system in program version 8.  On 9 July 02 parameter 4  (an offset 
value) of program step 136 was changed from 9.5264 to the correct value 0.95264 (this error 
had been made by the vendor). The error masked the real problem (wrong soil type) and 
after 9 July 02 resulted in very low soil moisture measurements.  The coefficients used were 
for coarse sand.  On 28 Sep 04 I visited the E15 site and found the soil type a fine 
sandy clay or fine sandy loam.  I changed the coefficients  at 1509 GMT to those for a very 
fine sandy loam; this produced reasonable soil moistures for the soil type.

The old coefficients in parameters 4 through 9 for step 136 of the program were: 0.95264, 
-6.7859, 36.224, -58.619, 25.073, 4.2278

The new coefficients are: 10.241, -27.943, 49.523, -12.648, -52.643, 38.054

• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• sensible_heat_flux
• surface_soil_heat_flux_5
• surface_soil_heat_flux_avg
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• latent_heat_flux
• soil_moisture_5
• energy_storage_change_1
• soil_moisture_2
• energy_storage_change_3
• soil_moisture_1
• energy_storage_change_2
• soil_moisture_4
• energy_storage_change_5
• soil_moisture_3
• energy_storage_change_4

SGP/EBBR/E15 - 6 Month Checks

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

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

• vapor_pressure_top
• rh_bottom_fraction
• sensible_heat_flux
• temp_trh_top
• latent_heat_flux
• temp_trh_bottom
• temp_air_top
• vapor_pressure_bottom
• rh_top_fraction
• temp_air_bottom
• bowen_ratio

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

SGP/EBBR/E15  - 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.

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean

SGP/EBBR/E15  - 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.

• wdir_vec_mean
• wspd_vec_mean
• wdir_vec_std

• wdir_vec_std
• wdir_vec_mean
• wspd_vec_mean

• wdir_vec_mean_mv

SGP/EBBR/E15  - 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.

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean

SGP/EBBR/E15  - 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.

• wdir_vec_mean
• wspd_vec_mean
• wdir_vec_std

• wdir_vec_std
• wdir_vec_mean
• wspd_vec_mean

• wdir_vec_mean_mv

SGP/EBBR/E15 - Soil Heat Flows Undermeasured, and Latent and Sensible Heat Fluxes 
Overstimated

Use of the wrong soil type soil moisture coefficients caused soil moisture to be greatly 
undermeasured (a typical wrong value was 4% instead of the correct 17%), soil heat flows 
to be undermeasured, and sensible and latent heat fluxes to be overestimated.

Soil heat flow plate outputs were undermeasured by up to 10%, change of energy storage was 
undermeasured by up to 80% and total soil heat flow was undermeasured by up to 50% as a 
result. This would result in approximately a 5% overestimation of both sensible and 
latent heat fluxes.

• sensible_heat_flux
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• latent_heat_flux
• soil_heat_capacity_4
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_avg
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• soil_heat_capacity_1
• soil_moisture_5
• soil_heat_capacity_2
• energy_storage_change_1
• soil_heat_capacity_3
• soil_moisture_2
• energy_storage_change_3
• soil_moisture_1
• energy_storage_change_2
• soil_moisture_4
• energy_storage_change_5
• soil_moisture_3
• energy_storage_change_4

SGP/EBBR/E15 - Net Radiation Too Large - Water in Bottom

Water in the bottom dome of the net radiometer made the measurements incorrectly large.  
Sensible and latent heat fluxes were therefore 
incorrect.

• net_radiation

• latent_heat_flux
• net_radiation
• sensible_heat_flux

• net_radiation_mv

SGP/EBBR/E15 - Improved EBBR CR10 Program

Effective 20050329.1900, the EBBR.E15 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 20050329, 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 sgp30ebbrE15.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE15.a1).

• surface_soil_heat_flux_avg
• latent_heat_flux
• sensible_heat_flux

SGP/EBBR/E15 - 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.

• surface_soil_heat_flux_avg
• latent_heat_flux
• sensible_heat_flux

SGP/EBBR/E15 - Soil Set #5 Temperature, Moisture, and Heat Flow Incorrect

Rodents chewed the cables on all three soil set #5 sensors, making the measurements 
incorrect.

• surface_soil_heat_flux_5
• corr_soil_heat_flow_5
• soil_temp_5
• soil_heat_capacity_5
• soil_moisture_5
• soil_heat_flow_5
• energy_storage_change_5

• soil_moisture_5_rr
• soil_temp_5_rr
• soil_heat_flow_5_mv

SGP/EBBR/E15 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E15 data collected by ARM back to the installation of the 
instrument in September 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 type
4) Correction of soil moisture units (from "by volume" to "gravimetric")

• base time(base_time)

• base time(base_time)

• base time(base_time)

SGP/EBBR/E15 - Net Radiation, Sensible and Latent Heat Fluxes Incorrect.

The top dome of the net radiometer was broken, resulting in net radiations that were too 
small, and thus sensible and latent heat fluxes that were too small.

• net_radiation

• latent_heat_flux
• net_radiation
• sensible_heat_flux

• net_radiation_mv

SGP/EBBR/E15 - Incorrect Sensible and Latent Heat Fluxes

Incorrect gradient measurements and sensible and latent heat fluxes resulted from the AEM 
not exchanging.

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

• vapor_pressure_top
• rh_bottom_fraction
• temp_air_top
• sensible_heat_flux
• vapor_pressure_bottom
• temp_trh_top
• rh_top_fraction
• temp_air_bottom
• latent_heat_flux
• bowen_ratio
• temp_trh_bottom

• temp_air_left
• temp_air_right

SGP/EBBR/E15 - Reprocess: Sensible and Latent Heat Fluxes, Soil Set #2 Sometimes Incorrect

Spikes in soil set #2 sometimes caused sensible and latent heat fluxes to be incorrect.  

There is no electronic connection between the soil set #2 sensors, so it is suspected that 
there was a problem in the soil set #2 cable bundle. A power outage ensued, after which 
the soil set #2 problem did not re-occur.

• surface_soil_heat_flux_avg
• corr_soil_heat_flow_2
• latent_heat_flux
• soil_temp_2
• surface_soil_heat_flux_2
• soil_heat_capacity_2
• soil_heat_flow_2
• sensible_heat_flux
• soil_moisture_2
• energy_storage_change_2

SGP/EBBR/E15 - Wind Speed Sensor Frozen Stopped

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

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean

SGP/EBBR/E15 - Water in dome

There was water in the bottom dome of the net radiometer.

Net radiation, and sensible and latent heat fluxes were 
incorrect during the period.

• net_radiation

• latent_heat_flux
• net_radiation
• sensible_heat_flux

• net_radiation_mv

SGP/EBBR/E15 - Soil Heat Flow #4 Incorrect

Soil heat flux #4 produced too large a soil heat flow at times, resulting in it exceeding 
the qc check limit and causing sensible and latent heat fluxes to be incorrect.

• surface_soil_heat_flux_avg
• surface_soil_heat_flux_4
• corr_soil_heat_flow_4
• latent_heat_flux
• sensible_heat_flux
• soil_heat_flow_4

• soil_heat_flow_4_mv

SGP/EBBR/E15 - Wind Speed Incorrect

The wind speed sensor was frozen stopped by freezing rain.

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean

SGP/EBBR/E15 - Soil Moisture and Soil Temp #1 Incorrect

Soil Moisture #1 and Soil Temperature #1 were incorrect during this period.

This situation did not affect the sensible and latent heat fluxes (EBBR programming used 
only the 4 good soil measurements to determine soil surface heat flux).

• corr_soil_heat_flow_1
• soil_heat_capacity_1
• soil_temp_1
• energy_storage_change_1
• surface_soil_heat_flux_1
• soil_moisture_1

• soil_temp_1_rr
• soil_moisture_1_rr