SGP/EBBR/E13 - Battery Voltage Drop

Sometime before August 16, 1995 the AC/DC converter was switched off and
the instrument heaters were switched on.  The solar panel was not able to
keep the battery voltage up under these conditions.  Much of the data for
the periods indicated is incorrect, especially data from the sensors that
require 12 volts DC power.  The data would have to be inspected to
determine what data is correct and what is incorrect.  It would be safest to
exclude all data from those periods from any analysis.  Site operations
switched the heaters off and turned the converter back on on August 21,
1995.

As reported in a recent DQR, the fluxes from the EBBR are incorrect
presently because of a malfunctioning T/RH probe; no spares are presently
available.

• AEM position indicator(home_signal)
• Soil heat flow 4 (mV)(soil_heat_flow_4_mv)
• Soil heat flow 1 (mV)(soil_heat_flow_1_mv)
• lon(lon)
• Soil temperature 3 (resistance ratio)(soil_temp_3_rr)
• Right T/RH sensor temperature (resistance ratio)(temp_trh_right_rr)
• Soil moisture 4 (resistance)(soil_moisture_4_r)
• Battery voltage(battery_voltage)
• Net radiation (mV)(net_radiation_mv)
• Soil heat flow 2 (mV)(soil_heat_flow_2_mv)
• base time in epoch(base_time)
• Soil temperature 5 (resistance ratio)(soil_temp_5_rr)
• Soil moisture 3 (resistance)(soil_moisture_3_r)
• Soil heat flow 5 (mV)(soil_heat_flow_5_mv)
• Left relative humidity (mV)(rh_left_mv)
• Right relative humidity (mV)(rh_right_mv)
• Wind direction vector mean (mV)(wdir_vec_mean_mv)
• Right air temperature(temp_air_right)
• Left air temperature(temp_air_left)
• North Latitude(lat)
• Soil moisture 2 (resistance)(soil_moisture_2_r)
• Soil heat flow 3 (mV)(soil_heat_flow_3_mv)
• Reference temperature in enclosure (resistance ratio)(temp_reference_rr)
• Soil temperature 2 (resistance ratio)(soil_temp_2_rr)
• -180.0 - +180.0(alt)
• Time offset from base_time(time_offset)
• Atmospheric pressure (mV)(atmos_pressure_mv)
• Soil temperature 1 (resistance ratio)(soil_temp_1_rr)
• Left T/RH sensor temperature (resistance ratio)(temp_trh_left_rr)
• Soil moisture 1 (resistance)(soil_moisture_1_r)
• Wind speed arithmetic mean(wspd_arith_mean)
• Soil moisture 5 (resistance)(soil_moisture_5_r)
• Soil temperature 4 (resistance ratio)(soil_temp_4_rr)

• Wind speed arithmetic mean(wspd_arith_mean)
• Top relative humidity (fractional)(rh_top_fraction)
• Net radiation(net_radiation)
• Top T/RH sensor temperature(temp_trh_top)
• Top vapor pressure(vapor_pressure_top)
• Bottom vapor pressure(vapor_pressure_bottom)
• Bottom T/RH sensor temperature(temp_trh_bottom)
• Wind direction vector mean(wdir_vec_mean)
• -180.0 - +180.0(alt)
• Wind speed vector mean(wspd_vec_mean)
• North Latitude(lat)
• Bottom relative humidity (fractional)(rh_bottom_fraction)
• Bottom air temperature(temp_air_bottom)
• Reference temperature in enclosure(temp_reference)
• Time offset from base_time(time_offset)
• Atmospheric pressure(atmos_pressure)
• Top air temperature(temp_air_top)
• lon(lon)
• Wind direction vector mean standard deviation(wdir_vec_std)
• AEM position indicator(home_signal)
• base time in epoch(base_time)

• Bowen ratio(bowen_ratio)
• Top T/RH sensor temperature(temp_trh_top)
• -180.0 - +180.0(alt)
• AEM position indicator 0 to 15 mins(home_signal_15)
• Top relative humidity (fractional)(rh_top_fraction)
• Change in energy storage 3, 0-5 cm soil layer(energy_storage_change_3)
• Change in energy storage 2, 0-5 cm soil layer(energy_storage_change_2)
• Change in energy storage 1, 0-5 cm soil layer(energy_storage_change_1)
• Surface soil heat flux 5(surface_soil_heat_flux_5)
• Wind speed arithmetic mean(wspd_arith_mean)
• Reference temperature in enclosure(temp_reference)
• Wind direction vector mean(wdir_vec_mean)
• Change in energy storage 5, 0-5 cm soil layer(energy_storage_change_5)
• Change in energy storage 4, 0-5 cm soil layer(energy_storage_change_4)
• Wind direction vector mean standard deviation(wdir_vec_std)
• base time in epoch(base_time)
• Wind speed vector mean(wspd_vec_mean)
• Time offset from base_time(time_offset)
• Bottom relative humidity (fractional)(rh_bottom_fraction)
• Soil heat flow 2(soil_heat_flow_2)
• Soil heat flow 3(soil_heat_flow_3)
• Soil heat flow 4(soil_heat_flow_4)
• Soil heat flow 5(soil_heat_flow_5)
• Surface soil heat flux 3(surface_soil_heat_flux_3)
• Surface soil heat flux 4(surface_soil_heat_flux_4)
• Surface soil heat flux 1(surface_soil_heat_flux_1)
• Surface soil heat flux 2(surface_soil_heat_flux_2)
• Soil heat flow 1(soil_heat_flow_1)
• Surface sensible heat flux(sensible_heat_flux)
• Bottom air temperature(temp_air_bottom)
• Soil moisture 3, gravimetric(soil_moisture_3)
• Soil moisture 4, gravimetric(soil_moisture_4)
• Soil heat flow 1, corrected for soil moisture(corr_soil_heat_flow_1)
• Soil moisture 5, gravimetric(soil_moisture_5)
• Top air temperature(temp_air_top)
• Soil heat flow 2, corrected for soil moisture(corr_soil_heat_flow_2)
• Soil heat flow 3, corrected for soil moisture(corr_soil_heat_flow_3)
• Soil heat flow 4, corrected for soil moisture(corr_soil_heat_flow_4)
• Soil heat flow 5, corrected for soil moisture(corr_soil_heat_flow_5)
• Soil moisture 1, gravimetric(soil_moisture_1)
• Soil moisture 2, gravimetric(soil_moisture_2)
• lon(lon)
• Surface soil heat flux, average of fluxes 1-5(surface_soil_heat_flux_avg)
• Net radiation(net_radiation)
• AEM position indicator 15 to 30 mins(home_signal_30)
• Atmospheric pressure(atmos_pressure)
• Half hour averaged soil temperature 5(soil_temp_5)
• Half hour averaged soil temperature 4(soil_temp_4)
• North Latitude(lat)
• Soil temperature mean 3(soil_temp_3)
• Soil heat capacity 4(soil_heat_capacity_4)
• Soil temperature 2(soil_temp_2)
• Soil heat capacity 5(soil_heat_capacity_5)
• Surface latent heat flux(latent_heat_flux)
• Soil temperature 1(soil_temp_1)
• Soil heat capacity 2(soil_heat_capacity_2)
• Bottom vapor pressure(vapor_pressure_bottom)
• Soil heat capacity 3(soil_heat_capacity_3)
• Bottom T/RH sensor temperature(temp_trh_bottom)
• Top vapor pressure(vapor_pressure_top)
• Soil heat capacity 1(soil_heat_capacity_1)