DQRID : D980416.7
Start DateStart TimeEnd DateEnd Time
10/30/1997180510/30/19971840
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Subject:
SGP/EBBR/E4 - EBBR E4 3-Month Check
DataStreams:sgp30ebbrE4.b1, sgp15ebbrE4.b1, sgp5ebbrE4.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:sgp30ebbrE4.b1:
  • Top air temperature(temp_air_top)
  • Top relative humidity (fractional)(rh_top_fraction)
  • Bottom air temperature(temp_air_bottom)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
  • Bottom relative humidity (fractional)(rh_bottom_fraction)
  • Top T/RH sensor temperature(temp_trh_top)
  • Surface latent heat flux(latent_heat_flux)
  • Top vapor pressure(vapor_pressure_top)
  • Bottom vapor pressure(vapor_pressure_bottom)
  • Bowen ratio(bowen_ratio)
  • Surface sensible heat flux(sensible_heat_flux)
more
sgp5ebbrE4.b1:
  • Bottom air temperature(temp_air_bottom)
  • Top relative humidity (fractional)(rh_top_fraction)
  • Top T/RH sensor temperature(temp_trh_top)
  • Bottom vapor pressure(vapor_pressure_bottom)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
  • Bottom relative humidity (fractional)(rh_bottom_fraction)
  • Top air temperature(temp_air_top)
  • Top vapor pressure(vapor_pressure_top)
more
sgp15ebbrE4.b1:
  • Right T/RH sensor temperature (resistance ratio)(temp_trh_right_rr)
  • Left relative humidity (mV)(rh_left_mv)
  • Left air temperature(temp_air_left)
  • Right relative humidity (mV)(rh_right_mv)
  • Left T/RH sensor temperature (resistance ratio)(temp_trh_left_rr)
  • Right air temperature(temp_air_right)
more

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