DQRID : D000531.4
Start DateStart TimeEnd DateEnd Time
07/17/1995220007/24/19952300
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Subject:
SGP/EBBR/E13 - failure of sensors
DataStreams:sgp5ebbrE13.b1, sgp15ebbrE13.b1, sgp5ebbrE13.00, sgp30ebbrE13.b1
Description:
A lightning strike to the central cluster area shortly after 0800 GMT
on July 17 caused failure of several EBBR sensors: both humidity probes,
the barometer, soil heat flux #3, soil moisture # 1 and the wind
direction.
These failed sensors caused sensible, latent, and average soil heat flux
to be incorrect until site operations performed maintenance on July 24th.

Site Operations found a loose connection from soil moisture probe #1, 
removed barometer SN 6578 and replaced it with SN 6507, removed soil heat 
flux sensor #3 with SN 923022 and replaced it with SN 933199, repositioned 
the wind direction sensor - which was rotated approximately ninety degrees 
clockwise from its proper position, and removed the right humidity probe 
SN 460412 and replaced it with SN 460428.
Suggestions: 
Measurements:sgp15ebbrE13.b1:
  • Left T/RH sensor temperature (resistance ratio)(temp_trh_left_rr)
  • Left relative humidity (mV)(rh_left_mv)
more
sgp5ebbrE13.00:
  • (Raw data stream - documentation not supported)
more
sgp5ebbrE13.b1:
  • Top relative humidity (fractional)(rh_top_fraction)
  • Top T/RH sensor temperature(temp_trh_top)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
  • Bottom relative humidity (fractional)(rh_bottom_fraction)
  • Top vapor pressure(vapor_pressure_top)
  • Bottom vapor pressure(vapor_pressure_bottom)
more
sgp30ebbrE13.b1:
  • Bowen ratio(bowen_ratio)
  • Top T/RH sensor temperature(temp_trh_top)
  • Surface sensible heat flux(sensible_heat_flux)
  • Top relative humidity (fractional)(rh_top_fraction)
  • Surface latent heat flux(latent_heat_flux)
  • Bottom vapor pressure(vapor_pressure_bottom)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
  • Top vapor pressure(vapor_pressure_top)
  • Bottom relative humidity (fractional)(rh_bottom_fraction)
more

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