DQRID : D980416.13
Start DateStart TimeEnd DateEnd Time
10/07/1997175010/07/19971832
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Subject:
SGP/EBBR/E15 - 3-Month Check
DataStreams:sgp5ebbrE15.b1, sgp30ebbrE15.b1, sgp15ebbrE15.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:sgp5ebbrE15.b1:
  • Top T/RH sensor temperature(temp_trh_top)
  • Top air temperature(temp_air_top)
  • Bottom vapor pressure(vapor_pressure_bottom)
  • Top relative humidity (fractional)(rh_top_fraction)
  • Bottom air temperature(temp_air_bottom)
  • Bottom relative humidity (fractional)(rh_bottom_fraction)
  • Top vapor pressure(vapor_pressure_top)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
more
sgp15ebbrE15.b1:
  • Left air temperature(temp_air_left)
  • Right relative humidity (mV)(rh_right_mv)
  • Left relative humidity (mV)(rh_left_mv)
  • Right T/RH sensor temperature (resistance ratio)(temp_trh_right_rr)
  • Right air temperature(temp_air_right)
  • Left T/RH sensor temperature (resistance ratio)(temp_trh_left_rr)
more
sgp30ebbrE15.b1:
  • Bottom air temperature(temp_air_bottom)
  • Top vapor pressure(vapor_pressure_top)
  • Bowen ratio(bowen_ratio)
  • Bottom vapor pressure(vapor_pressure_bottom)
  • Surface latent heat flux(latent_heat_flux)
  • Surface sensible heat flux(sensible_heat_flux)
  • Top relative humidity (fractional)(rh_top_fraction)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
  • Top air temperature(temp_air_top)
  • Bottom relative humidity (fractional)(rh_bottom_fraction)
  • Top T/RH sensor temperature(temp_trh_top)
more

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