DQRID : D980416.11
Start DateStart TimeEnd DateEnd Time
10/23/1997195510/23/19972015
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Subject:
SGP/EBBR/E12 - 3-Month Check
DataStreams:sgp5ebbrE12.b1, sgp30ebbrE12.b1, sgp15ebbrE12.b1
Description:
During EBBR 3 month checks the Automatic Exchange Mechanism is disabled
(reflected by home signals near zero) so that the two aspirator units can be
placed at the same height.  The measurements during these periods 
do not produce correct outputs of bowen ratio (bowen), sensible heat flux
(h), or latent heat flux (e), nor do the air temperature and relative 
humidity measurements indicate correct gradients.  Checks performed before 
or after the AEM is disabled also lead to some incorrect data.  Incorrect 5,
15 minute and half hour data occurs for the period above.
Suggestions: 
Measurements:sgp15ebbrE12.b1:
  • Right T/RH sensor temperature (resistance ratio)(temp_trh_right_rr)
  • Left T/RH sensor temperature (resistance ratio)(temp_trh_left_rr)
  • Left air temperature(temp_air_left)
  • Right relative humidity (mV)(rh_right_mv)
  • Left relative humidity (mV)(rh_left_mv)
  • Right air temperature(temp_air_right)
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sgp5ebbrE12.b1:
  • Top relative humidity (fractional)(rh_top_fraction)
  • Top T/RH sensor temperature(temp_trh_top)
  • Top air temperature(temp_air_top)
  • Top vapor pressure(vapor_pressure_top)
  • Bottom air temperature(temp_air_bottom)
  • Bottom vapor pressure(vapor_pressure_bottom)
  • Bottom relative humidity (fractional)(rh_bottom_fraction)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
more
sgp30ebbrE12.b1:
  • Bottom air temperature(temp_air_bottom)
  • Top relative humidity (fractional)(rh_top_fraction)
  • Bowen ratio(bowen_ratio)
  • Surface sensible heat flux(sensible_heat_flux)
  • Surface latent heat flux(latent_heat_flux)
  • Bottom relative humidity (fractional)(rh_bottom_fraction)
  • Top vapor pressure(vapor_pressure_top)
  • Top air temperature(temp_air_top)
  • Bottom vapor pressure(vapor_pressure_bottom)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
  • Top T/RH sensor temperature(temp_trh_top)
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