SGP/EBBR/E8  - 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_vec_mean
• wspd_arith_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean

SGP/EBBR/E8  - 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.

• wspd_vec_mean
• wdir_vec_std
• wdir_vec_mean

• wdir_vec_std
• wdir_vec_mean
• wspd_vec_mean

• wdir_vec_mean_mv

SGP/EBBR/E8  - 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_vec_mean
• wspd_arith_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean

SGP/EBBR/E8  - 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.

• wspd_vec_mean
• wdir_vec_std
• wdir_vec_mean

• wdir_vec_std
• wdir_vec_mean
• wspd_vec_mean

• wdir_vec_mean_mv

SGP/EBBR/E8 - Battery Voltage Problem

Battery voltage was too low to give correct data.

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

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

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

SGP/EBBR/E8 - Net Radiation Incorrect; Sensible and Latent Heat Fluxes Incorrect

The top dome of the net radiometer was cracked and water had gotten inside it, so net 
radiation, and sensible and latent heat fluxes were incorrect.

• sensible_heat_flux
• net_radiation
• latent_heat_flux

• net_radiation

• net_radiation_mv

SGP/EBBR/E8 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E8 data collected by ARM back to the installation of the 
instrument in December 1992. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil moisture units (from "by volume" to "gravimetric")

• base time(base_time)

• base time(base_time)

• base time(base_time)

SGP/EBBR/E8 - AEM Not Exchanging

The AEM hung in one position frequently and sometimes for many days during this period

While the AEM was not switching, the sensible and latent heat fluxes and gradient 
measurements were incorrect.

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

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

• temp_air_right
• temp_air_left

SGP/EBBR/E8 - Flux and Gradient Measurements Suspect

The flux and gradient measurements were often incorrect when the AEM did not function 
properly.  The user needs to inspect the data (particularly the home signals) to determine 
when the AEM was and was not working.

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

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

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

SGP/EBBR/E8 - Wind Speed Sensor Frozen Stopped

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

• wspd_vec_mean
• wspd_arith_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean

SGP/EBBR/E8 - Fluxes Incorrect; Left Humidity Near Zero

The left humidity was intermittently incorrect, therefore the sensible and latent heat 
fluxes were also.

• sensible_heat_flux
• vapor_pressure_bottom
• bowen_ratio
• vapor_pressure_top
• rh_top_fraction
• rh_bottom_fraction
• latent_heat_flux

• vapor_pressure_bottom
• rh_bottom_fraction
• rh_top_fraction
• vapor_pressure_top

• rh_left_mv

SGP/EBBR/E8 - Sensible and Latent Heat Flux Suspect

The left humidity sensor produced large spikes frequently.  This resulted in incorrect 
measurements of vapor pressure gradient and thus calculations of sensible and latent heat 
flux.

• sensible_heat_flux
• vapor_pressure_bottom
• bowen_ratio
• vapor_pressure_top
• rh_top_fraction
• rh_bottom_fraction
• latent_heat_flux

• vapor_pressure_bottom
• rh_bottom_fraction
• rh_top_fraction
• vapor_pressure_top

• rh_left_mv

SGP/EBBR/E8 - Sensible and Latent Heat Fluxes and Net Radiation Incorrect

The net radiometer top dome was broken and water had gotten into it.

Sensible and latent heat fluxes and net radiation were therefore incorrect.

• sensible_heat_flux
• net_radiation
• latent_heat_flux

• net_radiation

• net_radiation_mv

SGP/EBBR/E8 - Failed Temp/RH sensor

The right Temperature-Humidity sensor failed. The measured temperature gradients were 
incorrect and thus the sensible and latent heat fluxes were incorrect for this extended 
period.

The sensor was replaced March 6.

• sensible_heat_flux
• temp_trh_top
• vapor_pressure_bottom
• bowen_ratio
• vapor_pressure_top
• temp_trh_bottom
• latent_heat_flux

• vapor_pressure_bottom
• temp_trh_top
• vapor_pressure_top
• temp_trh_bottom

• temp_trh_right_rr