SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect

In a trip to E26, I found that a bad spark gap through which the barometer was powered was 
causing pressure measurements to be incorrect.  The pressure readings oscillated with 
the voltage of the EBBR battery.  During daytime the voltage and thus the pressure would 
increase and vice versa during dark hours.

Apparently only the positive side of the power supply was properly connected through the 
spark gap and thus the voltage received by the pressure sensor was lower than required to 
power it properly.  Under this condition the perssure measurement varies with voltage 
level.  The pressure measurements therefore had a diurnal signature and usually were 
incorrect.  

The decreased pressure during most times would cause latent heat flux to be slightly 
overestimated and sensible heat flux to be slightly underestimated.

• bowen_ratio
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Barometric Pressure(atmos_pressure)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• atmos_pressure_mv

• Barometric Pressure(atmos_pressure)

SGP/EBBR/E20 - Pressure Sensor Data Incorrect

The E20 pressure sensor suffered
from spikes in pressure, which were related to 
increases in voltage during the day as the 
solar panels charged the battery.  These spikes
were not of a magnitude that would affect the 
30 minute surface fluxes.

Replacement of the pressure sensor solved the problem.

• Barometric Pressure(atmos_pressure)

• atmos_pressure_mv

• Barometric Pressure(atmos_pressure)

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.

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

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

• wdir_vec_mean_mv

SGP/EBBR/E18 - AEM Sitting At Home 15 Position

After replacement of the AEM on 1/26/04, it exchanged
briefly, then sat at the home 15 position until another 
replacement was available.

• temp_air_right
• temp_air_left

• thum_bot
• hum_bot
• Heat flux, sensible, aerodynamic(ah)
• Corrected sensible heat flux(h)
• tair_bot
• hum_top
• Heat flux, latent(e)
• vp_bot
• Heat flux, latent, aerodynamic(ale)
• thum_top
• Heat flux, sensible, best estimate(hcomb)
• bowen
• vp_top
• Heat flux, latent, best estimate(ecomb)
• tair_top

• vapor_pressure_top
• vapor_pressure_bottom
• temp_air_top
• temp_air_bottom
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_top
• bowen_ratio
• rh_top_fraction
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• rh_bottom_fraction
• temp_trh_bottom

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

SGP/EBBR/E7 - Pressure Sensor Data Incorret

The E7 pressure sensor suffered
from spikes in pressure, which were related to 
increases in voltage during the day as the 
solar panels charged the battery.  These spikes
were not of a magnitude that would affect the 
30 minute surface fluxes.

Replacement of the pressure sensor solved the problem.

• atmos_pressure_mv

• Barometric Pressure(atmos_pressure)

• Barometric Pressure(atmos_pressure)

SGP/EBBR/E19 - Low Battery Voltage Caused Incorrect Data

Battery voltage less than 10.5 V caused much data to be questionable or incorrect.

• soil_heat_flow_1_mv
• soil_moisture_4_rr
• soil_moisture_2_rr
• temp_air_left
• atmos_pressure_mv
• rh_left_mv
• soil_moisture_3_rr
• soil_heat_flow_3_mv
• soil_heat_flow_4_mv
• net_radiation_mv
• soil_temp_4_rr
• rh_right_mv
• soil_temp_1_rr
• temp_reference_rr
• soil_temp_2_rr
• soil_moisture_1_rr
• temp_trh_right_rr
• home_signal
• soil_moisture_5_rr
• soil_temp_3_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_mean_mv
• soil_temp_5_rr
• temp_trh_left_rr
• soil_heat_flow_5_mv
• temp_air_right
• soil_heat_flow_2_mv

• temp_trh_top
• time
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)
• vapor_pressure_top
• home_signal
• vapor_pressure_bottom
• Radiation, net(net_radiation)
• rh_top_fraction
• rh_bottom_fraction
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_bottom
• temp_reference
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)

• vapor_pressure_top
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_bottom
• soil_temp_5
• soil_temp_1
• soil_temp_2
• soil_temp_3
• soil_temp_4
• soil_moisture_2
• surface_soil_heat_flux_1
• soil_moisture_1
• surface_soil_heat_flux_2
• soil_moisture_4
• soil_moisture_3
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• rh_bottom_fraction
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Wind speed vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• soil_moisture_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_top
• home_signal_30
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• home_signal_15
• energy_storage_change_1
• Radiation, net(net_radiation)
• soil_heat_capacity_4
• soil_heat_capacity_5
• soil_heat_capacity_2
• soil_heat_capacity_3
• wdir_vec_std
• soil_heat_capacity_1
• bowen_ratio
• Barometric Pressure(atmos_pressure)
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• vapor_pressure_bottom
• soil_heat_flow_4
• soil_heat_flow_5
• temp_air_bottom
• temp_reference
• temp_air_top
• rh_top_fraction
• corr_soil_heat_flow_5
• soil_heat_flow_1
• soil_heat_flow_2
• soil_heat_flow_3

SGP/EBBR/E22 - Wind Speed Sensor Bearings Worn

Wind speed was too low and/or often at or near zero due to
               worn bearings in the wind speed sensor.  Sensor was replaced
               3/17/04.

• 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)

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

SGP/EBBR/E12  - 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)
• Wind speed, lower, 1-min avg(wspd_arith_mean)

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

SGP/EBBR/E13  - 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)
• 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/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)

• 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/E18  - 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, 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)

SGP/EBBR/E20  - 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 vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)

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

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

SGP/EBBR/E22  - 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 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)

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

SGP/EBBR/E4  - 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 vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_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/E27  - 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)

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

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

SGP/EBBR/E19  - 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, 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)

SGP/EBBR/E26  - 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)

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

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

SGP/EBBR/E7  - Wind Speed Frozen Stopped By Ice

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

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

SGP/EBBR/E7 - Tref Problem Causes All Temps. to be Incorrect

The Tref sensor went crazy for this brief period, making all temperature
measurements incorrect.

• temp_air_left
• temp_air_right

• soil_temp_4
• soil_temp_5
• soil_temp_2
• temp_reference
• soil_temp_3
• temp_air_top
• temp_trh_bottom
• temp_trh_top
• temp_air_bottom
• soil_temp_1

• temp_air_bottom
• temp_air_top
• temp_trh_bottom
• temp_reference
• temp_trh_top

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.

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

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

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

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.

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

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

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

SGP/EBBR/E9  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition. The bearings
in the sensor appear to be worn, contributing to the problem.

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)

• 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/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.

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

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

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

• temp_air_right
• temp_air_left

• hum_top
• Heat flux, latent, best estimate(ecomb)
• vp_bot
• hum_bot
• tair_top
• thum_bot
• thum_top
• vp_top
• tair_bot
• bowen
• Heat flux, latent, aerodynamic(ale)
• Corrected sensible heat flux(h)
• Heat flux, sensible, best estimate(hcomb)
• Heat flux, sensible, aerodynamic(ah)
• Heat flux, latent(e)

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

• temp_trh_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_bottom
• rh_top_fraction
• temp_air_top
• bowen_ratio
• rh_bottom_fraction
• vapor_pressure_top
• temp_air_bottom
• temp_trh_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

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)

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

• res_ws
• wind_s

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

SGP/EBBR/E20 - Left Air Temperature Incorrect

The left air temperature, and therefore top and bottom air temperatures
were offscale or incorrect on occasion.  Bowen ratio, sensible heat flux, and latent heat 
flux were also incorrect during those times.

Inspection of the data is required to detect the incorrect periods.

• temp_air_top
• temp_air_bottom

• temp_air_left

• Corrected sensible heat flux(h)
• Heat flux, sensible, best estimate(hcomb)
• Heat flux, latent(e)
• tair_bot
• Heat flux, sensible, aerodynamic(ah)
• Heat flux, latent, aerodynamic(ale)
• Heat flux, latent, best estimate(ecomb)
• tair_top
• bowen

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

SGP/EBBR/E27  - Right Air Temperature Incorrect

The right air temperature, and therefore top and bottom air temperatures
were offscale or incorrect on occasion.  Bowen ratio, sensible heat flux, and latent heat 
flux were also incorrect during those times.

Inspection of the data is required to detect the incorrect periods.

• temp_air_top
• temp_air_bottom

• temp_air_right

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

SGP/EBBR/E13 - Automatic Exchange Mechanism Failure

The AEM was stuck in the home_15 position or reported near zero
home signals during much of the indicated period.

The Bowen ratio and latent and sensible heat fluxes were incorrect 
when the AEM was not operating properly; the periods of incorrect
data can be determined from the home signal values.

On 7/14/04 the AEM was replaced.

• temp_air_right
• temp_air_left

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

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• bowen_ratio
• temp_trh_top
• rh_bottom_fraction
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_bottom
• temp_air_bottom
• temp_trh_bottom
• rh_top_fraction
• temp_air_top

SGP/EBBR/E19 - AEM Hung Inbetween Home Positions

The AEM hung inbetween home positions, producing a home signal of zero.

Sensible and latent heat fluxes during this period are incorrect.

• temp_air_left
• temp_air_right

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

• temp_air_bottom
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_top
• temp_air_top
• rh_top_fraction
• vapor_pressure_top
• temp_trh_bottom
• rh_bottom_fraction
• bowen_ratio
• vapor_pressure_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

SGP/EBBR/E12 - Incorrect Times

The ntpd server (time adjustment) stopped working on Feb. 19th at 22:12:16 GMT, and the 
clock was corrected by -5600.177269 seconds on March 10th at 22:47 GMT. The recorded times 
for observations are off by amounts ranging from 0 seconds on Feb. 19th to 5600 seconds 
on March 10th.

• Radiation, net(net_radiation)
• soil_heat_capacity_2
• soil_heat_capacity_1
• soil_heat_capacity_5
• rh_bottom_fraction
• soil_heat_capacity_4
• soil_heat_capacity_3
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_trh_bottom
• Wind speed vector mean(wspd_vec_mean)
• energy_storage_change_5
• energy_storage_change_3
• energy_storage_change_4
• rh_top_fraction
• time_offset
• bowen_ratio
• soil_temp_5
• soil_temp_4
• soil_temp_3
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• soil_temp_2
• soil_temp_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• wdir_vec_std
• vapor_pressure_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• surface_soil_heat_flux_1
• vapor_pressure_top
• soil_heat_flow_5
• soil_heat_flow_4
• soil_heat_flow_3
• surface_soil_heat_flux_4
• home_signal_30
• surface_soil_heat_flux_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_3
• energy_storage_change_1
• soil_heat_flow_1
• energy_storage_change_2
• soil_heat_flow_2
• temp_air_top
• temp_trh_top
• temp_reference
• home_signal_15
• corr_soil_heat_flow_1
• corr_soil_heat_flow_2
• corr_soil_heat_flow_3
• corr_soil_heat_flow_4
• corr_soil_heat_flow_5
• soil_moisture_1
• soil_moisture_5
• base_time
• Barometric Pressure(atmos_pressure)
• soil_moisture_4
• soil_moisture_3
• soil_moisture_2
• temp_air_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• soil_temp_3_rr
• atmos_pressure_mv
• temp_reference_rr
• soil_heat_flow_2_mv
• soil_moisture_5_rr
• soil_heat_flow_5_mv
• soil_moisture_4_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• temp_air_right
• soil_heat_flow_4_mv
• battery_voltage
• rh_right_mv
• soil_moisture_3_rr
• temp_trh_right_rr
• soil_moisture_1_rr
• wdir_vec_mean_mv
• soil_temp_2_rr
• soil_temp_4_rr
• home_signal
• soil_heat_flow_1_mv
• temp_trh_left_rr
• base_time
• rh_left_mv
• soil_moisture_2_rr
• temp_air_left
• soil_temp_1_rr
• soil_temp_5_rr
• net_radiation_mv
• soil_heat_flow_3_mv
• time_offset

• ts5
• ts4
• ts3
• ts2
• ts1
• vp_bot
• hum_top
• c_shf2
• c_shf3
• Heat flux, sensible, aerodynamic(ah)
• c_shf1
• ces5
• ces4
• ces3
• ces2
• ces1
• tref
• vp_top
• home_30
• time_offset
• bowen
• thum_bot
• thum_top
• res_ws
• hum_bot
• sigma_wd
• Corrected sensible heat flux(h)
• Heat flux, latent(e)
• c_shf5
• c_shf4
• base_time
• Heat flux, latent, aerodynamic(ale)
• Average soil heat flux(ave_shf)
• Radiation, net(q)
• Heat flux, sensible, best estimate(hcomb)
• tair_bot
• g1
• g4
• g5
• g2
• g3
• shf1
• shf2
• shf3
• shf4
• shf5
• cs2
• cs1
• cs4
• cs3
• cs5
• sm1
• sm2
• wind_d
• tair_top
• vegetation_height
• home_15
• Pressure, atmospheric, constant value of model level, RUC model output(pres)
• sm5
• sm3
• sm4
• wind_s
• austar
• Heat flux, latent, best estimate(ecomb)

• Raw data stream - documentation not supported

• wdir_vec_std
• temp_trh_top
• rh_bottom_fraction
• base_time
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• Radiation, net(net_radiation)
• home_signal
• Barometric Pressure(atmos_pressure)
• vapor_pressure_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• temp_reference
• vapor_pressure_top
• rh_top_fraction
• time_offset
• time
• temp_air_bottom
• temp_trh_bottom

SGP/EBBR/E27 - Loose Tair Left Connections

Tair left dropped out at times. When this occurred, the sensible and latent heat fluxes 
are incorrect.

Tightening of the electronic connections to the datalogging equipment
appears to have solved the problem.

• temp_air_top
• temp_air_bottom

• temp_air_left

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

SGP/EBBR/E20 - Wind Direction Stuck at 100 Degrees

The wind direction sensor was stuck at about 100 degrees.  This did
not affect the primary measurements (net radiation, soil heat flow, sensible heat flux, 
latent heat flux).

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

• wdir_vec_mean_mv

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

SGP/EBBR/E20 - AEM Failure

The AEM hung inbetween positions; home signals were zero.

The AEM fuse kept blowing, most likely because of worn
rails or sleeves.  This condition may reoccur.

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

• temp_air_left
• temp_air_right

• temp_air_bottom
• temp_trh_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_air_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_bottom
• vapor_pressure_top
• bowen_ratio
• rh_bottom_fraction
• rh_top_fraction
• temp_trh_bottom

SGP/EBBR/E7 - Pressure Too High

When data collection resumed after a missing period, the barometer pressure
had become very high, 102 kPa, which was not correct.  This condition resulted
from an incorrect calibration being used. Sensible heat flux was overestimated 
by about 4% and latent heat flux underestimated by about 4% because of the 
high pressure readings.

• atmos_pressure_mv

• Barometric Pressure(atmos_pressure)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• bowen_ratio

• Barometric Pressure(atmos_pressure)

SGP/EBBR/E13 - Net Radiation Incorrect, Fluxes Incorrect

Rain entered the net radiometer through a crack in the upper dome and
settled in the bottom dome.  This caused too large net radiation measurements
during the following daylight hours, until the domes were replaced and dried out the same 
day.

• 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/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.

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

• net_radiation_mv

• Radiation, net(net_radiation)

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.

• 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 - AEM Failure, Fluxes Incorrect

The AEM failed.  Sensible and latent heat fluxes were incorrect, as well as gradient 
measurements.

• temp_air_right
• temp_air_left

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

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• bowen_ratio
• temp_trh_top
• rh_bottom_fraction
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_bottom
• temp_air_bottom
• temp_trh_bottom
• rh_top_fraction
• temp_air_top

SGP/EBBR/E20 - Soil Heat Flow #3 and Soil Temperature #3 Incorrect

• soil_temp_3_rr
• soil_heat_flow_3_mv

• energy_storage_change_3
• corr_soil_heat_flow_3
• soil_heat_flow_3
• surface_soil_heat_flux_3
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_temp_3
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E7 - Data Missing

A power outage resulted in missing data for the indicated period.

• lon
• soil_heat_flow_3_mv
• soil_heat_flow_4_mv
• base_time
• soil_temp_3_rr
• soil_temp_4_rr
• soil_temp_5_rr
• soil_heat_flow_5_mv
• home_signal
• net_radiation_mv
• temp_air_left
• atmos_pressure_mv
• wdir_vec_mean_mv
• soil_heat_flow_1_mv
• temp_trh_right_rr
• time_offset
• rh_left_mv
• temp_trh_left_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• temp_air_right
• soil_moisture_5_rr
• battery_voltage
• soil_heat_flow_2_mv
• soil_temp_2_rr
• soil_moisture_3_rr
• soil_moisture_1_rr
• lat
• temp_reference_rr
• rh_right_mv
• soil_moisture_4_rr
• soil_temp_1_rr
• soil_moisture_2_rr
• alt

• temp_reference
• soil_heat_flow_5
• soil_heat_flow_3
• soil_heat_flow_4
• soil_heat_flow_1
• soil_heat_flow_2
• Wind speed vector mean(wspd_vec_mean)
• Barometric Pressure(atmos_pressure)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_3
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• energy_storage_change_4
• home_signal_30
• temp_air_top
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• soil_temp_4
• soil_temp_5
• soil_temp_2
• soil_temp_3
• alt
• soil_temp_1
• lon
• rh_top_fraction
• vapor_pressure_top
• home_signal_15
• wdir_vec_std
• Radiation, net(net_radiation)
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• soil_moisture_5
• lat
• soil_moisture_1
• soil_heat_capacity_1
• surface_soil_heat_flux_1
• soil_heat_capacity_2
• surface_soil_heat_flux_4
• soil_heat_capacity_5
• surface_soil_heat_flux_5
• surface_soil_heat_flux_2
• soil_heat_capacity_3
• surface_soil_heat_flux_3
• soil_heat_capacity_4
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_trh_bottom
• temp_trh_top
• base_time
• bowen_ratio
• rh_bottom_fraction
• corr_soil_heat_flow_1
• time_offset
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_5
• corr_soil_heat_flow_4
• temp_air_bottom
• vapor_pressure_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• time
• lon
• temp_air_bottom
• temp_trh_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• Radiation, net(net_radiation)
• lat
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• vapor_pressure_bottom
• wdir_vec_std
• alt
• base_time
• vapor_pressure_top
• temp_trh_top
• temp_air_top
• rh_top_fraction
• Wind speed vector mean(wspd_vec_mean)
• temp_reference
• rh_bottom_fraction
• Barometric Pressure(atmos_pressure)
• time_offset
• home_signal

SGP/EBBR/E20  - All Soil Measurements Incorrect

All soil measurements were incorrect during the replacement of soil heat flow #3 and soil 
temperature #3.

• soil_temp_2_rr
• soil_temp_3_rr
• soil_heat_flow_3_mv
• soil_moisture_1_rr
• soil_heat_flow_4_mv
• soil_moisture_4_rr
• soil_heat_flow_5_mv
• soil_temp_4_rr
• soil_heat_flow_2_mv
• soil_moisture_3_rr
• soil_heat_flow_1_mv
• soil_moisture_2_rr
• soil_temp_1_rr
• soil_temp_5_rr
• soil_moisture_5_rr

• 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_moisture_4
• soil_heat_capacity_2
• soil_moisture_3
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_moisture_5
• soil_heat_capacity_5
• soil_moisture_2
• soil_moisture_1
• soil_heat_capacity_1
• surface_soil_heat_flux_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• energy_storage_change_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• soil_temp_3
• soil_temp_4
• soil_temp_5
• soil_temp_1
• soil_temp_2
• soil_heat_flow_1
• soil_heat_flow_3
• soil_heat_flow_2
• soil_heat_flow_5
• soil_heat_flow_4
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)

SGP/EBBR/E2 - Soil Heat Flow Sensor #2 Bad

Soil Heat Flow sensor #2 spiked downwards at times for a while,
but eventually became negative continuously.

The problem was fixed when the sensor was replaced.

• soil_heat_flow_2_mv

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_2
• corr_soil_heat_flow_2
• soil_heat_flow_2
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

SGP/EBBR/E9 - 6 Month Checks

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

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• rh_top_fraction
• temp_trh_bottom
• vapor_pressure_top
• temp_trh_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_bottom
• bowen_ratio
• temp_air_bottom
• temp_air_top

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

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

SGP/EBBR/E12 - 6 Month Checks

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

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

• temp_air_top
• vapor_pressure_bottom
• temp_trh_bottom
• temp_trh_top
• rh_top_fraction
• bowen_ratio
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• rh_bottom_fraction
• temp_air_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

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

SGP/EBBR/E13 - 6 Month Checks

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

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

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

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_bottom
• temp_air_top
• bowen_ratio
• temp_trh_top
• rh_bottom_fraction
• vapor_pressure_bottom
• temp_trh_bottom
• rh_top_fraction

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.

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

• vapor_pressure_top
• rh_bottom_fraction
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_trh_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_bottom
• temp_air_top
• vapor_pressure_bottom
• rh_top_fraction
• temp_air_bottom
• bowen_ratio

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

SGP/EBBR/E18 - 6 Month Checks

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

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

• vapor_pressure_top
• vapor_pressure_bottom
• temp_air_top
• temp_air_bottom
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_top
• bowen_ratio
• rh_top_fraction
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• rh_bottom_fraction
• temp_trh_bottom

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

SGP/EBBR/E19 - 6 Month Checks

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

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

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

• vapor_pressure_top
• temp_trh_bottom
• vapor_pressure_bottom
• temp_air_bottom
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_top
• temp_air_top
• rh_top_fraction
• rh_bottom_fraction
• bowen_ratio
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

SGP/EBBR/E20 - 6 Month Checks

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

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

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

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_air_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_bottom
• rh_bottom_fraction
• temp_air_bottom
• temp_trh_top
• vapor_pressure_top
• bowen_ratio
• rh_top_fraction
• temp_trh_bottom

SGP/EBBR/E22 - 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_trh_top
• vapor_pressure_bottom
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_air_top
• temp_air_bottom
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_bottom
• rh_bottom_fraction
• rh_top_fraction

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

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

SGP/EBBR/E26 - 6 Month Checks

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

• temp_air_bottom
• temp_air_top
• temp_trh_bottom
• temp_trh_top
• rh_top_fraction
• bowen_ratio
• rh_bottom_fraction
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom

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

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

SGP/EBBR/E27 - 6 Month Checks

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

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

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

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• rh_bottom_fraction
• rh_top_fraction
• temp_air_bottom
• temp_trh_bottom
• temp_trh_top
• vapor_pressure_top
• bowen_ratio
• vapor_pressure_bottom

SGP/EBBR/E12 - AEM home_15 Incorrect, Flux Measurements not affected

The home_15 measurement was incorrect during much of the stated period.
The AEM was exchanging however, and thus the flux measurements were not affected.

• home_signal

• home_signal_15

• home_signal

SGP/EBBR/E20 - Soil Moisture #4 and Soil Temperature #4 Incorrect

Failures of a multiplexer channel and a J-panel channel caused soil temperature #4 and 
soil moisture #4 to spike and drift at times.  Replacement of the failed equipment solved 
the problem.

• soil_moisture_4_rr
• soil_temp_4_rr

• soil_moisture_4
• corr_soil_heat_flow_4
• soil_heat_capacity_4
• energy_storage_change_4
• surface_soil_heat_flux_4
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_temp_4
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E26 - Low Battery Voltage - Many Measurements Incorrect

During low battery voltage conditions (< 10.5 V especially) many measurements are 
incorrect.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• surface_soil_heat_flux_5
• soil_moisture_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• home_signal_30
• soil_heat_capacity_1
• soil_temp_5
• soil_temp_4
• soil_heat_flow_3
• soil_temp_3
• soil_heat_flow_2
• soil_temp_2
• soil_heat_flow_1
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_4_rr
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_moisture_5_rr
• temp_trh_right_rr
• soil_heat_flow_2_mv
• soil_temp_3_rr
• soil_moisture_2_rr
• soil_heat_flow_1_mv
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_rr
• home_signal
• soil_moisture_1_rr
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

SGP/EBBR/E26 - Most Measurements Incorrect

Most of the measurements became either too large or too small.
The cause is not known.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• surface_soil_heat_flux_5
• soil_moisture_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• home_signal_30
• soil_heat_capacity_1
• soil_temp_5
• soil_temp_4
• soil_heat_flow_3
• soil_temp_3
• soil_heat_flow_2
• soil_temp_2
• soil_heat_flow_1
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_4_rr
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_moisture_5_rr
• temp_trh_right_rr
• soil_heat_flow_2_mv
• soil_temp_3_rr
• soil_moisture_2_rr
• soil_heat_flow_1_mv
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_rr
• home_signal
• soil_moisture_1_rr
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

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.

• temp_air_top
• temp_trh_top
• vapor_pressure_top
• temp_air_bottom
• rh_bottom_fraction
• bowen_ratio
• rh_top_fraction
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_bottom
• temp_trh_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

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

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

SGP/EBBR/E4 - 6 Month Checks

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

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

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

• temp_trh_bottom
• temp_air_top
• bowen_ratio
• temp_air_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• rh_bottom_fraction
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_bottom
• temp_trh_top
• rh_top_fraction
• vapor_pressure_top

SGP/EBBR/E7 - 6 Month Checks

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

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

• bowen_ratio
• rh_bottom_fraction
• temp_air_bottom
• vapor_pressure_bottom
• rh_top_fraction
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• vapor_pressure_top
• temp_trh_bottom
• temp_trh_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

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

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.

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

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

• temp_trh_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_bottom
• rh_top_fraction
• temp_air_top
• bowen_ratio
• rh_bottom_fraction
• temp_air_bottom
• vapor_pressure_top
• temp_trh_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E20 - Soil Heat Flow #4 Incorrect

Soil Heat Flow #4 was missing or offscale and therefore incorrect during the stated 
period.

• soil_heat_flow_4_mv

• corr_soil_heat_flow_4
• surface_soil_heat_flux_4
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• soil_heat_flow_4
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

SGP/EBBR/E9 - Wind Speed Threshhold Low

When the wind speed is very low, the anemometer cups stop turning.  Wind
speeds above the threshhold may be underestimated.

• 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/E26 - Aging Pressure Sensor Output Changes
With Supply Voltage

The E26 EBBR pressure sensor experienced the poor internal voltage regulation problem 
experienced at other sites last year.  Aging of the internal voltage regulator caused the 
pressure output to drop by 1-2 kPa (0.1-0.5 kPa is normal) when the Sun rose and the solar 
panel goosed the battery voltage up.  

The sensible and latent heat fluxes were not significantly affected.

• Barometric Pressure(atmos_pressure)

• atmos_pressure_mv

• Barometric Pressure(atmos_pressure)

SGP/EBBR/E27 - SM2 Coefficients Incorect

Soil Moisture #2 coefficients in the CR10 datalogger program were incorrect during the 
time
that an old program version was installed.

• soil_moisture_2_rr

• soil_moisture_2
• surface_soil_heat_flux_2
• soil_heat_capacity_2
• corr_soil_heat_flow_2
• energy_storage_change_2

SGP/EBBR/E12 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E12 data collected by ARM back to the installation of the 
instrument in August 1993. 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

• base_time

• base_time

SGP/EBBR/E13 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E13 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 systems
3) Correction of soil type
4) Correction of soil moisture units (from "by volume" to "gravimetric")

• base_time

• base_time

• base_time

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

• base_time

• base_time

SGP/EBBR/E18 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E18 data collected by ARM back to the installation of the 
instrument in July 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 type
4) Correction of soil moisture units (from "by volume" to "gravimetric")

• base_time

• base_time

• base_time

SGP/EBBR/E19 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E19 data collected by ARM back to the beginning of the data 
set 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 type
4) Correction of soil moisture units (from "by volume" to "gravimetric")

• base_time

• base_time

• base_time

SGP/EBBR/E27 - metadata corrections

On 20050816, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E27 data collected by ARM back to the installation of the 
instrument in May 2003. 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

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

SGP/EBBR/E4 - metadata corrections

On 20050817, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E4 data collected by ARM back to the installation of the 
instrument in April 1993. 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

SGP/EBBR/E7 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E7 data collected by ARM back to the installation of the 
instrument in May 1993. 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

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

SGP/EBBR/E9 - metadata corrections

On 20050420, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E9 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

SGP/EBBR/E20 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E20 data collected by ARM back to the installation of the 
instrument in April 1993. 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

SGP/EBBR/E22 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E22 data collected by ARM back to the installation of the 
instrument in April 1993. 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

• base_time

• base_time

SGP/EBBR/E26 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E26 data collected by ARM back to the installation of the 
instrument in June 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

SGP/EBBR/E2 - Missing data

Data are missing and unrecoverable

• rh_right_mv
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• soil_temp_1_rr
• lat
• soil_heat_flow_5_mv
• soil_moisture_4_rr
• rh_left_mv
• time_offset
• soil_heat_flow_4_mv
• lon
• soil_heat_flow_3_mv
• temp_reference_rr
• soil_moisture_5_rr
• soil_moisture_1_rr
• soil_temp_5_rr
• base_time
• soil_temp_2_rr
• temp_trh_left_rr
• home_signal
• atmos_pressure_mv
• soil_moisture_2_rr
• temp_air_left
• net_radiation_mv
• soil_heat_flow_1_mv
• soil_temp_3_rr
• wdir_vec_mean_mv
• soil_heat_flow_2_mv
• temp_air_right
• soil_moisture_3_rr
• alt
• soil_temp_4_rr
• temp_trh_right_rr
• battery_voltage

• energy_storage_change_1
• energy_storage_change_4
• energy_storage_change_5
• energy_storage_change_2
• soil_temp_5
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• energy_storage_change_3
• soil_temp_3
• soil_temp_4
• soil_temp_1
• soil_temp_2
• temp_air_top
• soil_heat_flow_4
• soil_heat_flow_5
• soil_heat_flow_1
• soil_heat_flow_2
• soil_heat_flow_3
• soil_moisture_4
• soil_moisture_3
• vapor_pressure_top
• soil_moisture_2
• soil_moisture_1
• temp_air_bottom
• soil_moisture_5
• rh_top_fraction
• Wind speed vector mean(wspd_vec_mean)
• alt
• corr_soil_heat_flow_5
• corr_soil_heat_flow_1
• corr_soil_heat_flow_2
• corr_soil_heat_flow_3
• corr_soil_heat_flow_4
• Barometric Pressure(atmos_pressure)
• temp_reference
• rh_bottom_fraction
• time_offset
• base_time
• vapor_pressure_bottom
• lat
• home_signal_30
• temp_trh_bottom
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_5
• soil_heat_capacity_4
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• home_signal_15
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Radiation, net(net_radiation)
• lon
• temp_trh_top
• surface_soil_heat_flux_1
• surface_soil_heat_flux_2
• bowen_ratio
• wdir_vec_std
• surface_soil_heat_flux_5
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3

• home_signal
• Radiation, net(net_radiation)
• time
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• time_offset
• vapor_pressure_top
• rh_top_fraction
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• alt
• temp_reference
• lon
• lat
• temp_air_bottom
• Wind speed vector mean(wspd_vec_mean)
• Barometric Pressure(atmos_pressure)
• base_time
• rh_bottom_fraction
• temp_trh_bottom
• wdir_vec_std
• temp_trh_top
• vapor_pressure_bottom
• temp_air_top