SGP/EBBR/E8  - 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.

• sensible_heat_flux
• net_radiation
• latent_heat_flux

• net_radiation

• net_radiation_mv

SGP/EBBR/E8  - 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_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

SGP/EBBR/E8  - Wind Speed Sensor Frozen Stopped By Icing

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 - AEM Replacement

The AEM at E8 kept hanging in between home positions.

This DQR covers only the period during which the AEM was being
replaced.  

DQRs generally are not issued for AEMs that are not working
as qc flags indicate this clearly.

• 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
• rh_bottom_fraction
• temp_trh_bottom

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

• Temperature of bottom humidity sensor chamber(thum_bot)
• Aerodynamic Latent heat flux(ale)
• Best estimate Sensible heat flux(hcomb)
• latent heat flux(e)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• Bottom humidity(hum_bot)
• top air temperature(tair_top)
• Aerodynamic Sensible heat flux(ah)
• Temperature of the top humidity chamber(thum_top)
• Best estimate Latent heat flux(ecomb)
• Top humidity(hum_top)
• bottom air temperature(tair_bot)
• h(h)
• bottom vapor pressure(vp_bot)
• top vapor pressure(vp_top)

• temp_air_right
• temp_air_left

SGP/EBBR/E8 - Net Radiation Incorrect, Fluxes Incorrect

The net radiometer dome was broken and water entered the botom dome,
causing net radiation measurements, and thus sensible and latent heat 
flux measurements, to be incorrect.

• sensible_heat_flux
• net_radiation
• latent_heat_flux

• net_radiation

• net_radiation_mv

SGP/EBBR/E8 - 6 Month Checks

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

• 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 - 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)