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

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

• net_radiation

• net_radiation_mv

• net_radiation
• latent_heat_flux
• sensible_heat_flux

SGP/EBBR/E2  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• wspd_arith_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean
• wspd_vec_mean

SGP/EBBR/E2 - Net Radiometer Dome Broken, Reducing Net Radiation Measurement, Fluxes 
Incorrect

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

Sensible and latent heat fluxes were reduced as a result.

• net_radiation

• net_radiation_mv

• net_radiation
• latent_heat_flux
• sensible_heat_flux

SGP/EBBR/E2 - 6 Month Checks

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

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

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

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

SGP/EBBR/E2  - Wind Speed Frozen Stopped By Ice Storm

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• wspd_arith_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean
• wspd_vec_mean

SGP/EBBR/E2  - Wind Direction Frozen Stopped By Ice Storm

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

• wdir_vec_mean_mv

• wspd_vec_mean
• wdir_vec_std
• wdir_vec_mean

• wdir_vec_mean
• wspd_vec_mean
• wdir_vec_std

SGP/EBBR/E2  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• wspd_arith_mean

• wspd_arith_mean
• wspd_vec_mean

• wspd_arith_mean
• wspd_vec_mean

SGP/EBBR/E2 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E2 data collected by ARM back to the installation of the 
instrument in May 1997. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

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

• base time(base_time)

• base time(base_time)

• base time(base_time)

SGP/EBBR/E2 - Missing data

Data are missing and unrecoverable

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

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

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