DQRID : D100803.1
Start DateStart TimeEnd DateEnd Time
07/08/2010073007/29/20101100
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Subject:
SGP/EBBR/E20 - Incorrect Sensible and Latent Heat Fluxes
DataStreams:sgp5ebbrE20.b1, sgp30ebbrE20.b1, sgp15ebbrE20.b1
Description:
Because of a periodic AEM failure, home signal 30 was often stuck at the home signal 15 
position.  These occurrences resulted in incorrect latent and sensible heat flux values at 
times.  Some missing data occurred because of low battery voltage (the CR10 program stops 
running when battery voltage is insufficient.  The data outage events were preceded and 
followed by several hours of bad/suspicious data.
Suggestions: 
Measurements:sgp30ebbrE20.b1:
  • Bowen ratio(bowen_ratio)
  • Top air temperature(temp_air_top)
  • Top T/RH sensor temperature(temp_trh_top)
  • Surface sensible heat flux(sensible_heat_flux)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
  • Bottom vapor pressure(vapor_pressure_bottom)
  • Bottom air temperature(temp_air_bottom)
  • Surface latent heat flux(latent_heat_flux)
  • Top vapor pressure(vapor_pressure_top)
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sgp15ebbrE20.b1:
  • Soil heat flow 2 (mV)(soil_heat_flow_2_mv)
  • Soil moisture 2 (resistance ratio)(soil_moisture_2_rr)
  • AEM position indicator(home_signal)
  • Right air temperature(temp_air_right)
  • Atmospheric pressure (mV)(atmos_pressure_mv)
  • Soil moisture 5 (resistance ratio)(soil_moisture_5_rr)
  • Right relative humidity (mV)(rh_right_mv)
  • Soil temperature 3 (resistance ratio)(soil_temp_3_rr)
  • Soil heat flow 5 (mV)(soil_heat_flow_5_mv)
  • Right T/RH sensor temperature (resistance ratio)(temp_trh_right_rr)
  • Soil heat flow 1 (mV)(soil_heat_flow_1_mv)
  • North Latitude(lat)
  • Soil moisture 3 (resistance ratio)(soil_moisture_3_rr)
  • Soil moisture 4 (resistance)(soil_moisture_4_r)
  • Soil moisture 2 (resistance)(soil_moisture_2_r)
  • Soil temperature 4 (resistance ratio)(soil_temp_4_rr)
  • base time in epoch(base_time)
  • -180.0 - +180.0(alt)
  • Soil heat flow 4 (mV)(soil_heat_flow_4_mv)
  • Reference temperature in enclosure (resistance ratio)(temp_reference_rr)
  • Left relative humidity (mV)(rh_left_mv)
  • Wind direction vector mean (mV)(wdir_vec_mean_mv)
  • lon(lon)
  • Soil temperature 5 (resistance ratio)(soil_temp_5_rr)
  • Wind speed arithmetic mean(wspd_arith_mean)
  • Soil temperature 1 (resistance ratio)(soil_temp_1_rr)
  • Left T/RH sensor temperature (resistance ratio)(temp_trh_left_rr)
  • Left air temperature(temp_air_left)
  • Net radiation (mV)(net_radiation_mv)
  • Soil heat flow 3 (mV)(soil_heat_flow_3_mv)
  • Soil moisture 1 (resistance ratio)(soil_moisture_1_rr)
  • Battery voltage(battery_voltage)
  • Time offset from base_time(time_offset)
  • Soil moisture 5 (resistance)(soil_moisture_5_r)
  • time_in_seconds_since_volume_start(time)
  • Soil moisture 3 (resistance)(soil_moisture_3_r)
  • Soil moisture 1 (resistance)(soil_moisture_1_r)
  • Soil moisture 4 (resistance ratio)(soil_moisture_4_rr)
  • Soil temperature 2 (resistance ratio)(soil_temp_2_rr)
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sgp5ebbrE20.b1:
  • Top T/RH sensor temperature(temp_trh_top)
  • Top relative humidity (fractional)(rh_top_fraction)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
  • Top vapor pressure(vapor_pressure_top)
  • Bottom air temperature(temp_air_bottom)
  • Top air temperature(temp_air_top)
  • Bottom vapor pressure(vapor_pressure_bottom)
  • Bottom relative humidity (fractional)(rh_bottom_fraction)
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