DQRID : D940711.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/18/1994200006/22/19941600Incorrect
more
Subject:
SGP/EBBR/E12 - Aspirator Failure
DataStreams:sgp5ebbrE12.b1, sgp30ebbrE12.b1, sgp15ebbrE12.b1
Description:
On June 18, 1994 the aspirator fan in the EBBR at E12, Pawhuska stopped
working.  This situation was not discovered until a Preventative
Maintenance visit by site operations personnel on June 22, 1994.  I
determined the time of the beginning of the malfunction from close
inspection of the sensible and latent heat flux data.  There is no aspiration
status output for the EBBRs, nor is one presently possible.  Wind speeds during
most of the period listed were sufficient to provide some (although
inadequate) aspiration to the temperature and relative humidity probes, making
it difficult for most users of the data to be able to tell (except in a few
circumstances) that the sensible and latent heat flux values produced were
incorrect.  All of the data fields listed below are incorrect for the period
listed above.  Latent and Sensible heat fluxes cannot be recomputed, as the
measurements that they are based on are what was corrupted.

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

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

5 minute:  tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
           vp_top, vp_bot
Suggestions: 
Measurements:sgp15ebbrE12.b1:
  • temp_trh_right_rr
  • temp_trh_left_rr
  • temp_air_left
  • rh_right_mv
  • rh_left_mv
  • temp_air_right
more
sgp5ebbrE12.b1:
  • rh_top_fraction
  • temp_trh_top
  • temp_air_top
  • vapor_pressure_top
  • temp_air_bottom
  • vapor_pressure_bottom
  • rh_bottom_fraction
  • temp_trh_bottom
more
sgp30ebbrE12.b1:
  • temp_air_bottom
  • rh_top_fraction
  • bowen_ratio
  • sensible_heat_flux
  • latent_heat_flux
  • rh_bottom_fraction
  • vapor_pressure_top
  • temp_air_top
  • vapor_pressure_bottom
  • temp_trh_bottom
  • temp_trh_top
more

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