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

• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_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_top
• temp_reference
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - EBBR E15 Wind Speed Iced

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

• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_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_reference
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_air_top
• Sensible heat flux(sensible_heat_flux)

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.

• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• temp_trh_bottom
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP/EBBR/E15 - E15 EBBR Data Missing

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

• East longitude(lon)
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• 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_moisture_2
• soil_moisture_1
• soil_heat_flow_4
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• North latitude(lat)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• time_offset
• base_time
• Altitude above mean sea level(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

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.

• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• temp_trh_bottom
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP/EBBR/E15 - E15 EBBR Data Missing

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

• East longitude(lon)
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• 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_moisture_2
• soil_moisture_1
• soil_heat_flow_4
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• North latitude(lat)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• time_offset
• base_time
• Altitude above mean sea level(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

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 temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_3
• corr_soil_heat_flow_5
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• Latent heat flux(latent_heat_flux)
• corr_soil_heat_flow_1
• soil_heat_flow_1
• energy_storage_change_1
• soil_heat_flow_3
• soil_heat_flow_2
• soil_heat_flow_5
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5

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(sensible_heat_flux)
• surface_soil_heat_flux_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• soil_heat_capacity_1
• soil_heat_capacity_5
• energy_storage_change_1
• soil_heat_capacity_2
• 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.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - E15 EBBR AEM Replacement

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

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

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.

• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• temp_trh_bottom
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP/EBBR/E15 - E15 EBBR Incorrect Net Radiation

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

• Latent heat flux(latent_heat_flux)
• Net radiation(net_radiation)
• Sensible heat flux(sensible_heat_flux)

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

The data was incorrect during the 6 month checks.

• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• temp_trh_bottom
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

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.

• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• temp_trh_bottom
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP EBBR E15 - E15 EBBR Data Zeros Incorrect

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

• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• temp_trh_bottom
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

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.

• East longitude(lon)
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• 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_moisture_2
• soil_moisture_1
• soil_heat_flow_4
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• North latitude(lat)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• time_offset
• base_time
• Altitude above mean sea level(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

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

The data was incorrect during the 6 month checks.

• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• temp_trh_bottom
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

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.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - 6 Month Checks

The indicated measurements were incorrect during the 6 month checks.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

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_4
• soil_heat_capacity_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3

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_4
• soil_heat_capacity_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3

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

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

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

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.

• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• temp_trh_bottom
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

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.

• Atmospheric 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.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

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.

• Wind direction vector mean(wdir_vec_mean)

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_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_air_top
• Sensible heat flux(sensible_heat_flux)

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.

• Latent heat flux(latent_heat_flux)
• Net radiation(net_radiation)
• Sensible heat flux(sensible_heat_flux)

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
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Soil temperature mean 5(soil_temp_5)
• Latent heat flux(latent_heat_flux)
• Sensible heat flux(sensible_heat_flux)
• energy_storage_change_5

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
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Soil temperature mean 5(soil_temp_5)
• Latent heat flux(latent_heat_flux)
• Sensible heat flux(sensible_heat_flux)
• energy_storage_change_5

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.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• home_signal_30
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• home_signal_15
• vapor_pressure_bottom

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.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• temp_air_bottom
• rh_bottom_fraction
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

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.

• Latent heat flux(latent_heat_flux)
• Net radiation(net_radiation)
• Sensible heat flux(sensible_heat_flux)

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.

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

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.

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

• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_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(sensible_heat_flux)
• surface_soil_heat_flux_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• Latent heat flux(latent_heat_flux)
• soil_moisture_5
• energy_storage_change_1
• soil_moisture_2
• energy_storage_change_3
• energy_storage_change_2
• soil_moisture_1
• soil_moisture_4
• energy_storage_change_5
• energy_storage_change_4
• soil_moisture_3

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.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

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.

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

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.

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

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(sensible_heat_flux)
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Average soil heat flow at the surface(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
• energy_storage_change_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• energy_storage_change_3
• soil_moisture_2
• 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.

• Latent heat flux(latent_heat_flux)
• Net radiation(net_radiation)
• Sensible heat flux(sensible_heat_flux)

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).

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Latent heat flux(latent_heat_flux)
• Sensible 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.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Latent heat flux(latent_heat_flux)
• Sensible 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 temperature mean 5(soil_temp_5)
• soil_heat_capacity_5
• soil_moisture_5
• soil_heat_flow_5
• energy_storage_change_5

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

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.

• Latent heat flux(latent_heat_flux)
• Net radiation(net_radiation)
• Sensible heat flux(sensible_heat_flux)

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
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

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.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_2
• Latent heat flux(latent_heat_flux)
• Soil temperature mean 2(soil_temp_2)
• surface_soil_heat_flux_2
• soil_heat_capacity_2
• soil_heat_flow_2
• soil_moisture_2
• Sensible heat flux(sensible_heat_flux)
• 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.

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

• Latent heat flux(latent_heat_flux)
• Net radiation(net_radiation)
• Sensible heat flux(sensible_heat_flux)

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.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_4
• corr_soil_heat_flow_4
• Latent heat flux(latent_heat_flux)
• Sensible heat flux(sensible_heat_flux)
• soil_heat_flow_4

SGP/EBBR/E15 - 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)

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 temperature mean 1(soil_temp_1)
• soil_heat_capacity_1
• energy_storage_change_1
• surface_soil_heat_flux_1
• soil_moisture_1

SGP/EBBR/E15 - Sensible and Latent Heat Fluxes Low
(Net Radiation too low)

Sensible and Latent Heat Fluxes were measured as being low because of damage to the net 
radiometer.

The Sensible and Latent Heat fluxes can be approximated by taking the ratio of the daytime 
SIRS net radiation to EBBR net radiation, and then multiplying the Sensible and Latent 
Heat Fluxes by that ratio.

• Latent heat flux(latent_heat_flux)
• Net radiation(net_radiation)
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - Sensible and Latent Heat Flux Suspect - Soil Heat Flow 5 Problem

Soil Heat Flow sensor 5 was offscale at times, causing sensible and latent heat fluxes to 
be incorrect during those times.

• surface_soil_heat_flux_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• Latent heat flux(latent_heat_flux)
• soil_heat_flow_5
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - Soil heat flow #1 failure

Soil heat flow 1 sensor wires chewed by rodents. Values less than the accepted minimum.

• Latent heat flux(latent_heat_flux)
• corr_soil_heat_flow_1
• soil_heat_flow_1
• surface_soil_heat_flux_1
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - Soil heat flow #5 failure

Soil_heat_flow_5 sensor failed at times, resulting in sensible and latent heat fluxes 
being incorrect at times. Sensor was replaced 2/6/2012.

• surface_soil_heat_flux_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• Latent heat flux(latent_heat_flux)
• soil_heat_flow_5
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - Sensible and Latent heat fluxes incorrect

Soil Heat Flow sensor 5 was incorrect at times and just "noisy" at other times. Therefore 
Sensible and Latent heat fluxes were often incorrect.

• surface_soil_heat_flux_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• Latent heat flux(latent_heat_flux)
• soil_heat_flow_5
• Sensible heat flux(sensible_heat_flux)

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

Soil heat flow 1 did not report correctly at times, resulting in incorrect sensible and 
latent heat fluxes at times.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Latent heat flux(latent_heat_flux)
• corr_soil_heat_flow_1
• soil_heat_flow_1
• surface_soil_heat_flux_1
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - Sensible and latent heat fluxes incorrect

The AEM stuck in between levels during these two periods.

Therefore, sensible and latent heat fluxes were incorrect during these times.

• Latent heat flux(latent_heat_flux)
• bowen_ratio
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - AEM failure

AEM failure; sensible and latent heat fluxes are incorrect.

• Latent heat flux(latent_heat_flux)
• bowen_ratio
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - Missing data

Data are missing and unrecoverable.

• East longitude(lon)
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• 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_moisture_2
• soil_moisture_1
• soil_heat_flow_4
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• North latitude(lat)
• time
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• time_offset
• base_time
• Altitude above mean sea level(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

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

The AEM did not work. Sensible and latent heat fluxes are incorrect for this period.

• Latent heat flux(latent_heat_flux)
• bowen_ratio
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - Soil temp 3 failure

Soil temperature 3 data were incorrect, resulting in sensible and latent heat fluxes 
sometimes being incorrectly calculated.

• surface_soil_heat_flux_3
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• Soil temperature mean 3(soil_temp_3)
• energy_storage_change_3
• Sensible heat flux(sensible_heat_flux)

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

The cable for soil heat flow 4 had been chewed in half by a rodent.

Therefore soil heat flow 4, sensible heat flux, and latent heat flux are incorrect for the 
period specified.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_4
• corr_soil_heat_flow_4
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• Sensible heat flux(sensible_heat_flux)
• soil_heat_flow_4

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

When the soil heat flow #5 spiked, the sensible and latent heat fluxes were often 
incorrect (incorrect mostly during daytime, less frequently at night).

• surface_soil_heat_flux_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Soil temperature mean 5(soil_temp_5)
• Latent heat flux(latent_heat_flux)
• Sensible heat flux(sensible_heat_flux)
• energy_storage_change_5

SGP ALL INSTRUMENTS - Icing Event

An icing event (winter storm Cara) passed slowly through the area during this time frame.  
Instruments at the SGP may have been affected by ice accumulation.

• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_flow_2
• soil_heat_capacity_3
• soil_moisture_2
• soil_heat_flow_5
• soil_moisture_1
• soil_heat_flow_4
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• temp_trh_bottom
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP Site Power Outage Due to Winter Storm

On Saturday and Sunday, December 26 and 27th a powerful winter storm (Goliath) brought 
sleet and freezing rain to much of Oklahoma with wind gusts of 45 MPH at times. The result 
was very very slick roads and mass power outages.
 
The SGP central facility lost power at 8:55 PM CDT on Sunday, December 27th.  
The power was restored on 7:56 PM CDT on Wednesday, December 30th
 
Site Emergency procedures were activated and Technicians drained water out of instrument 
reservoirs and other measures as needed, early Monday morning.
 
On Wednesdays as roads and power started was restored to much of the areas east of I-35 , 
Site Technicians performed maintenance on several Extended Facilities.

During this period, data are potentially missing, incorrect, or suspect.  Carefully 
inspect the data before use.

• East longitude(lon)
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• temp_air_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• soil_heat_flow_1
• Net radiation(net_radiation)
• soil_moisture_5
• soil_heat_capacity_1
• soil_heat_flow_3
• soil_heat_capacity_2
• soil_heat_flow_2
• soil_heat_capacity_3
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• North latitude(lat)
• Soil temperature mean 3(soil_temp_3)
• time
• Latent heat flux(latent_heat_flux)
• home_signal_30
• soil_heat_capacity_4
• temp_trh_bottom
• soil_heat_capacity_5
• time_offset
• base_time
• Altitude above mean sea level(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• rh_top_fraction
• temp_reference
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP/EBBR/E15 - Incorrect and Missing Data

There was much incorrect or missing data during this period as the logger battery was 
dying.

The data will need to be inspected by the user to determine what data is missing and 
incorrect.

• East longitude(lon)
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• 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_moisture_2
• soil_moisture_1
• soil_heat_flow_4
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• North latitude(lat)
• time
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• time_offset
• base_time
• Altitude above mean sea level(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

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

Sensible and latent heat flux were incorrect while the AEM was not working.

• Latent heat flux(latent_heat_flux)
• bowen_ratio
• Sensible heat flux(sensible_heat_flux)

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

Sensible and latent heat fluxes were incorrect because the EBBR supply voltage was 
incorrect. The other fields listed are also affected.

• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• temp_trh_bottom
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

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

Sensible and latent heat fluxes and all measurements were incorrect when the EBBR supply 
voltage was too low.

• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_moisture_2
• soil_heat_flow_5
• soil_heat_flow_4
• soil_moisture_1
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• temp_trh_bottom
• soil_heat_capacity_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP/EBBR/E15 - Battery Voltage Drop, Storage Module Change

For a short period on June 6, 1995 at E15, Ringwood, OK, two events
resulted in a loss of data: replacement of the storage module and a low
battery condition.  The low battery condition apparently affected only the
1815 GMT data output.  All data during this period is missing (1645-1800
GMT) of incorrect (1815-1830).

• East longitude(lon)
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• 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_moisture_2
• soil_moisture_1
• soil_heat_flow_4
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• North latitude(lat)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• time_offset
• base_time
• Altitude above mean sea level(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP/EBBR/E15 - Frozen Wind Speed Sensor

On March 7, 1995 freezing rain stopped the cups of the EBBR wind
speed instrument at Ringwood, OK (E15).  All 5, 15, and 30
minute data values indicated below are incorrect for the period indicated.

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

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

SGP/EBBR/E15 - AEM Home 15 Values High

Beginning on June 23, 1995, the home 15 value indicated greater than 70 at
times.  This indicates that the home 15 and 30 outputs are somehow being
electronically added in the AEM.  Home 15 values above 70 cause a data quality
message to be output in the site operations log as the stated acceptable range
for home 15 is 35 to 70.  However, no data is incorrect as a result of this
condition.

No replacement AEM is available and site operations was not able to
diagnose the problem.  At present, data quality is not jeopardized.

I will submit another DQR or addendum when successful repair or replacement of
the AEM is accomplished.

• East longitude(lon)
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• 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_moisture_2
• soil_moisture_1
• soil_heat_flow_4
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• North latitude(lat)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• time_offset
• base_time
• Altitude above mean sea level(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP/EBBR/E15 - AEM Not Exchanging

On August 27, 1995 at approximately 1615 GMT the upper sprocket shaft of the AEM
broke in two, causing the AEM to stop exchanging.  The home signal values
then remained at around 22 for both home_15 and Home_30.  On August 28 site
operations personnel removed the fuse (to prevent exchange) with the left
aspirator in the down position.  The home signal values remained around
-2.3 after that. The AEM will remain in this condition until a replacement
is available.

Therefore, the calculations of Bowen ratio, latent heat flux, and sensible heat
flux are incorrect for all times after August 27, 1995 at 1615 GMT.  The data
fields listed below are incorrect after this time:

5 minute:  tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
           vp_top, vp_bot

30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top,
           hum_bot, vp_top, vp_bot, Bowen, e, h

It is not possible to reliably calculate the Bowen ratio, e, and h using the
15 minute data.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• temp_air_bottom
• rh_bottom_fraction
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - AEM Replaced

Please see DQR P950908.1, where this problem was first documented.

On August 27, 1995 at approximately 1615 GMT the upper sprocket shaft of the AEM
broke in two, causing the AEM to stop exchanging.  The home signal values
then remained at around 22 for both home_15 and Home_30.  On August 28 site
operations personnel removed the fuse (to prevent exchange) with the left
aspirator in the down position.  The home signal values remained around
-2.3 after that.  On 14 September 1995, site operations personnel replaced
the AEM (serial numbers unknown) and it has operated correctly since then.

The calculations of Bowen ratio, latent heat flux, and sensible heat
flux are incorrect for all times during the period listed above.  The data
fields listed below are incorrect:

5 minute:  tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
           vp_top, vp_bot

30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top,
           hum_bot, vp_top, vp_bot, Bowen, e, h

It is not possible to reliably calculate the Bowen ratio, e, and h using the
15 minute data.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - AEM Exchange Stopped in Snow and Freezing Rain

On the night of November 10-11, a north-south line from south central
Kansas through south central Oklahoma received snow and freezing rain and experienced 
below freezing temperatures.  This caused the EBBR automatic exchange mechanism (AEM) to stop 
exchanging temporarily.   

Note that temperatures, relative humidities, and vapor pressures are not affected; these 
are correct as measured, but the height at which the measurements occurred must be 
determined from the home signal value.

• Latent heat flux(latent_heat_flux)
• bowen_ratio
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - Annual calibration changeout

On December 14, 1995 the changeout for annual calibration occurred at E15,
Ringwood, OK.  Between 1650 and 2050 GMT no data was remotely collected.
Furthermore, 5 minute data for 2050 GMT is incorrect, 15 minute data for
2045 GMT is incorrect, and 30 minute data for 2100 GMT is incorrect.
A rather large jump in soil moisture appears in the data after the
installation was completed (the bags holding the probes were soaked with water
before installation).  Soil measurements indicated greater than ambient
soil moisture  until a rain on late 18 December saturated the soil; after this
period the probes reflected actual soil moisture conditions.  The larger than
normal soil moistures have little impact on the small soil heat flux during
this time of year, and thus no significant affect on computed sensible and
latent heat fluxes.

• East longitude(lon)
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• 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_moisture_2
• soil_moisture_1
• soil_heat_flow_4
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• North latitude(lat)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• time_offset
• base_time
• Altitude above mean sea level(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP/EBBR/E15 - Wind Speed Cups Frozen

Freezing rain, snow, and below freezing conditions during 18-19 January
1995 caused the wind speed sensor cups to freeze in a stopped state at E15,
Ringwood, OK on 18 January 1995.  When temperatures rose to above freezing on
19 January, the ice thawed and the cups turned freely again.

Measurements affected by the stalled wind speed sensor include:

5 minute:  wind_s, res_ws

15 minute: wind_s

30 minute: wind_s, res_ws

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

SGP/EBBR/E15 - Reprocess: Soil Temperature Probe Malfunction

Malfunction of soil temperature probe #3 at 157, Ringwood, OK resulted in
incorrect data values for 7 fields for the period of time listed above.  The
soil temperature value from probe #3 went offscale, resulting in a zero value
for the soil energy storage term calculated from that probe and thus no
contribution to the total soil heat flux for soils set 4 and the same for
average soil heat flux.  This led to incorrect sensible and latent heat
flux values.  The probe may have become disconnected during the 20 December
site operations preventative maintenance visit.  However, it also had
rodent chew damage and so was removed and replaced.

The fields that are incorrect are:

30 minute: ts3, ces3, g3, ave_shf, e, h

15 minute: rr_ts3.

Soil temperature probe #3 was replaced at 2030 GMT on 16 January 1996.
The old S/N was 95043, the new S/N is 93018.  Sensible and latent heat fluxes
can be recomputed by averaging the soil heat flux from the four sets of
functioning soil probes; use the following equations:

ave_shf = (g1 + g2 + g4 + g5)/4

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

h = e * bowen,

where g is total soil heat flow, q is net radiation, and bowen is Bowen
Ratio.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_3
• Latent heat flux(latent_heat_flux)
• Soil temperature mean 3(soil_temp_3)
• energy_storage_change_3
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - Battery Voltage Drop

From the installation of the changeout unit at E15 on 15 December 1995, the
battery exhibited a slow decline in voltage. However, after a day of the
AEM not operating, site operations restarted the AEM on 20 December 1995 and
the battery condition declined more rapidly, such that the solar panel was not
able to keep the battery voltage up (greater than 11 V DC) for nighttime
conditions, even after a cloudless day.  Battery voltage first dropped below 11
volts at 0635 GMT on 21 December.  I requested that the solar panel voltage
regulator be tested.  On 16 January 1996, site operations found that the
fuse in the solar panel voltage regulator was loose.  After the fuse was
repositioned, the battery voltage increased almost immediately to 13.5
volts and has been good since.

All data for the periods above should be considered incorrect; many sensors
require at least 11 volts DC power and the performance of the CR10 data
logger can not be trusted at less than 11 volts.

• vapor_pressure_top
• East longitude(lon)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• 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_moisture_2
• soil_moisture_1
• soil_heat_flow_4
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• North latitude(lat)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• time_offset
• base_time
• Altitude above mean sea level(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

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.  The period of incorrect
data for the EBBR is listed above; data times affected do not include the
beginning time and do include the ending time (data files are denoted by
the end time).

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - EBBR 3 Month Checks - 10 EFs

During EBBR 3 month checks the Automatic Exchange Mechanism is disabled 
(reflected by home signals near zero) so that the two aspirator units
can be placed at the same height.  The measurements during these periods 
do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), 
or latent heat flux (e), nor do the air temperature and relative humidity 
measurements indicate correct gradients.  Checks performed before or after the 
AEM is disabled also lead to some incorrect data.  Incorrect 5, 15 minute and 
half hour data occurs for periods indicated.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• temp_air_bottom
• rh_bottom_fraction
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - Wind Speed Cups frozen

Freezing rain, snow, and below freezing conditions during 18-19 January 
1995 caused the wind speed sensor cups to freeze in a stopped state at E15, 
Ringwood, OK on 18 January 1995.  When temperatures rose to above freezing on 
19 January, the ice thawed and the cups turned freely again. 

Measurements affected by the stalled wind speed sensor include:

5 minute:  wind_s, res_ws

15 minute: wind_s

30 minute: wind_s, res_ws

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

SGP/EBBR/E15 - Connections Affecting Home Signals

For most of the period above at E15, Ringwood, OK, home signals were very
large, resulting in incorrect data.  On April 22, 1997, site operations found 
some loose connections on the J-panels that were causing the problem.  This
problem affected a wide range of measurements and calculated values, 
rendering much of the data, including the sensible and latent heat fluxes 
as incorrect.  Only careful examination of the data would allow some to be 
used as is and other quantities to be recalculated.  I would request that 
anyone needing this data contact me for information on it's quality.

• Latent heat flux(latent_heat_flux)
• home_signal_30
• Sensible heat flux(sensible_heat_flux)
• home_signal_15

SGP/EBBR/E15 - EBBR Biannual Checks

During EBBR 3 month checks the Automatic Exchange Mechanism is disabled 
(reflected by home signals near zero) so that the two aspirator units
can be placed at the same height.  The measurements during these periods 
do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), 
or latent heat flux (e), nor do the air temperature and relative humidity 
measurements indicate correct gradients.  Checks performed before or after the 
AEM is disabled also lead to some incorrect data.  Incorrect 5, 15 minute and 
half hour data occurs for periods indicated.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• temp_air_bottom
• rh_bottom_fraction
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - EBBR Frozen Wind Speed

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

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

SGP/EBBR/E15 - EBBR AEMs Not Exchanging (Iced Or Fuse Blown)

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

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

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• temp_air_bottom
• rh_bottom_fraction
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - EBBR Net Radiometer Domes Pierced, Water Inside - Data Affected

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

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

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

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

• Latent heat flux(latent_heat_flux)
• Net radiation(net_radiation)
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - Wind Speed Sensor Frozen

The wind speed sensor was frozen during the period.  

Data values that were incorrect are:

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

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

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 these periods 
do not produce correct outputs of bowen ratio (bowen), sensible heat flux
(h), or latent heat flux (e), nor do the air temperature and relative 
humidity measurements indicate correct gradients.  Checks performed before 
or after the AEM is disabled also lead to some incorrect data.  Incorrect 5,
15 minute and half hour data occurs for the period above.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - Pressure Diurnal Fluctuations

During this period the barometric pressure exhibited increasingly larger,
and unatural, diurnal fluctuations.  This has been observed at other sites
previously.  The sensor was replaced on April 21.  The diurnal fluctuations
had only a minor effect on the calculated fluxes of latent and sensible
heat; the fluxes are not incorrect as a result of the problem.

• Latent heat flux(latent_heat_flux)
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - Pressure Too High

During this period the barometric pressure was consistently much greater
than the true pressure, hanging around 113 kPa all of the time.
The defective sensor was replaced on April 28. The calculated fluxes of 
latent and sensible heat are incorrect during the period.

• Atmospheric pressure(atmos_pressure)
• Latent heat flux(latent_heat_flux)
• Sensible heat flux(sensible_heat_flux)

SGP/EBBR/E15 - Left T/RH Probe Temperature Too Large

Beginning in February, the temperature of the left T/RH probe reported too
high a value at some times.  The frequency of the problem increased with
time until 28 April at 1520 GMT, when a defective probe was installed; the
latter probe temperature indicated very high values.  This continued until
1 May at 1530 GMT when a working probe was installed. Times of incorrect 
humidity probe temperatures can be determined by comparing 5 or 30 minute 
values of air temperature and humidity probe temperature; at these times the 
calculated bowen ratio, and the fluxes of latent and sensible heat are 
incorrect.

The incorrect variables were:

5  minute:  thum_top, thum_bot, vp_top, vp_bot
15 minute:  rr_thum_l
30 minute:  thum_top, thum_bot, vp_top, vp_bot, bowen, e, h

• vapor_pressure_top
• temp_trh_top
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - Six Month Checks

During EBBR 6 month checks (formally called 3 month checks) the Automatic 
Exchange Mechanism is disabled (reflected by home signals near zero) so that
the two aspirator units can be placed at the same height.  The measurements
during these periods do not produce correct outputs of bowen ratio (bowen), 
sensible heat flux (h), or latent heat flux (e), nor do the air temperature
and relative humidity measurements indicate correct gradients.  Checks 
performed just before or after the AEM is disabled also lead to some 
incorrect data.  Incorrect 5, 15 minute and half hour data occurs for the 
period above.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• temp_air_bottom
• rh_bottom_fraction
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - Aspirator loosened from AEM mount

The left aspirator was loosened from the AEM mount.  Thus all gradients
of T/RH/VP and sensible and latent heat fluxes for the period are 
incorrect.  T/RH/VP measurements from the left probe are incorrect only
through 1745 GMT.

• vapor_pressure_top
• temp_trh_top
• rh_top_fraction
• rh_bottom_fraction
• temp_air_bottom
• Latent heat flux(latent_heat_flux)
• bowen_ratio
• temp_trh_bottom
• temp_air_top
• Sensible heat flux(sensible_heat_flux)
• vapor_pressure_bottom

SGP/EBBR/E15 - Wind Direction Data Incorrect (revised)

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

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

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

SGP/EBBR/E15 - Wind Speed Data Incorrect

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

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

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

SGP/EBBR - EBBR E15 Wind Speed Data Incorrect

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

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

• East longitude(lon)
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• 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_moisture_2
• soil_moisture_1
• soil_heat_flow_4
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• North latitude(lat)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• time_offset
• base_time
• Altitude above mean sea level(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP/EBBR - EBBR E15 Wind Speed Data Incorrect

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

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

• East longitude(lon)
• vapor_pressure_top
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_bottom_fraction
• Sensible heat flux(sensible_heat_flux)
• surface_soil_heat_flux_5
• temp_trh_top
• surface_soil_heat_flux_3
• Atmospheric pressure(atmos_pressure)
• surface_soil_heat_flux_4
• home_signal_15
• temp_air_top
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• bowen_ratio
• Net radiation(net_radiation)
• soil_heat_flow_1
• soil_moisture_5
• 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_moisture_2
• soil_moisture_1
• soil_heat_flow_4
• soil_moisture_4
• soil_moisture_3
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• North latitude(lat)
• Latent heat flux(latent_heat_flux)
• soil_heat_capacity_4
• home_signal_30
• soil_heat_capacity_5
• temp_trh_bottom
• time_offset
• base_time
• Altitude above mean sea level(alt)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Wind direction vector mean(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)
• vapor_pressure_bottom
• temp_reference
• rh_top_fraction
• energy_storage_change_1
• wdir_vec_std
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4

SGP/EBBR/E15 - Temperatures Incorrect

Poor contact of the reference temperature probe leads to the J-panel or
multiplexer caused frequent offscale and incorrect values of the reference
temperature.  All other temperature measurements (air, soil, and humidity 
probe) depend on the reference temperature for a correction.  Therefore all
temperature measurements are frequently offscale and incorrect during the 
specified period.  The data clearly shows the offscale times.

• temp_trh_top
• temp_reference
• temp_air_bottom
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• temp_trh_bottom
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• temp_air_top