DQRID : D980416.15
Start DateStart TimeEnd DateEnd Time
10/09/1997152810/09/19971602
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Subject:
SGP/EBBR/E19 - 3-Month Check
DataStreams:sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.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 indicated.
Suggestions: 
Measurements:sgp30ebbrE19.b1:
  • Top vapor pressure(vapor_pressure_top)
  • Bottom vapor pressure(vapor_pressure_bottom)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
  • Top air temperature(temp_air_top)
  • Bowen ratio(bowen_ratio)
  • Top T/RH sensor temperature(temp_trh_top)
  • Bottom air temperature(temp_air_bottom)
  • Surface latent heat flux(latent_heat_flux)
  • Top relative humidity (fractional)(rh_top_fraction)
  • Bottom relative humidity (fractional)(rh_bottom_fraction)
  • Surface sensible heat flux(sensible_heat_flux)
more
sgp15ebbrE19.b1:
  • Left air temperature(temp_air_left)
  • Right air temperature(temp_air_right)
  • Right relative humidity (mV)(rh_right_mv)
  • Right T/RH sensor temperature (resistance ratio)(temp_trh_right_rr)
  • Left T/RH sensor temperature (resistance ratio)(temp_trh_left_rr)
  • Left relative humidity (mV)(rh_left_mv)
more
sgp5ebbrE19.b1:
  • Bottom relative humidity (fractional)(rh_bottom_fraction)
  • Bottom air temperature(temp_air_bottom)
  • Bottom vapor pressure(vapor_pressure_bottom)
  • Top T/RH sensor temperature(temp_trh_top)
  • Top air temperature(temp_air_top)
  • Top relative humidity (fractional)(rh_top_fraction)
  • Top vapor pressure(vapor_pressure_top)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
more

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