DQRID : D940106.2
Start DateStart TimeEnd DateEnd Time
12/20/1993073012/22/19931500
more
Subject:
SGP/EBBR/E12 - Invalid data due to blown AEM fuse at E12
DataStreams:sgp5ebbrE12.b1, sgp30ebbrE12.b1, sgp15ebbrE12.b1
Description:
On December 20, 1993, before 0730 GMT, the fuse in the AEM (Automatic
Exchange Mechanism) of Pawhuska, OK (E12) EBBR blew out.  The AEM remained
nonfunctional until the fuse was replaced just before 1500 GMT on
December 22, 1993.  This situation resulted in the following invalid data:

5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
          vp_top, vp_bot, home

15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, mv_home, tair_r,
           tair_l

30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
           vp_top, vp_bot, bowen, e, h, home_15, home_30

Bowen, h, and e can not be recalculated from the 15 minute and/or 5 minute data
since we cannot determine the position of the sensors on the AEM from the home
signal; home signal is near zero when there is no power to the AEM.
Suggestions: 
Measurements:sgp15ebbrE12.b1:
  • AEM position indicator(home_signal)
  • 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)
more
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)
  • AEM position indicator(home_signal)
  • 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)
  • AEM position indicator 0 to 15 mins(home_signal_15)
  • Bottom T/RH sensor temperature(temp_trh_bottom)
  • AEM position indicator 15 to 30 mins(home_signal_30)
  • Top T/RH sensor temperature(temp_trh_top)
more

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