SGP/EBBR/E13 - Wind direction failure

The EBBR wind direction was stuck at 135 degrees; this reading indicates a failure of the 
sensor electronics.

• wdir_vec_mean_mv

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

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

SGP/EBBR/E13 - Wind Speed Incorrect

The wind speed sensor was stopped by freezing rain.

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

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

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

SGP/EBBR/E13 - Incorrect Sensible and Latent Heat Fluxes

The multiplexer to which the air temperatures were connected experienced a problem, 
resulting in incorrect sensible and latent heat fluxes at times.

• temp_air_right
• temp_air_left

• temp_air_top
• temp_air_bottom

• temp_air_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• bowen_ratio
• temp_air_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E13 - Net Radiation Too Large

The EBBR Net Radiation (Rn) values maintained a ~200 Wm^-2 reading because of poor cable 
lead connections.  Sensible and latent heat fluxes were therefore overestimated.

Sensible (H) and latent heat (LE) fluxes can be estimated in the following way:

H (new) = H/[1 + (EBBR Rn - SIRS net radiation)/SIRS net radiation]

LE (new) = LE/[1 + (EBBR Rn - SIRS net radiation)/SIRS net radiation]

• net_radiation_mv

• Radiation, net(net_radiation)

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Radiation, net(net_radiation)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E13 - Soil temperature #3 offscale

Soil Temp Sensor 3 data were missing or offscale due to a bad connection. 

H and LE were not normally affected, as the EBBR program "kicked" out the incorrect 
temperature measurements before calculating H and LE.

• soil_temp_3_rr

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• bowen_ratio
• surface_soil_heat_flux_3
• soil_heat_capacity_3
• Soil temperature mean 3(soil_temp_3)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)