DQRID : D000531.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/17/1995220009/22/19952108Incorrect
more
Subject:
SGP/EBBR/E13 - Failed Right Humidity Probe
DataStreams:sgp5ebbrE13.b1, sgp15ebbrE13.b1, sgp30ebbrE13.b1, sgp5ebbrE13.00
Description:
A lightning strike to the central cluster area on 17 July 1995 caused
failure of several EBBR sensors including the right humidity probe.
On July 24th, site operations removed the right humidity probe SN 460412 and 
replaced it with SN 460428

In less than a day the right humidity probe output soared to over 113% and
has hovered around 112% since.  I consider all right probe values to be
incorrect due to this behavior.

Without a properly functioning right humidity probe, all values of top and
bottom relative humidity, top and bottom vapor pressure, Bowen
ratio, and latent and sensible heat fluxes are incorrect.

A working spare relative humidity probe was not available at that time.
The probe was replaced with a working, calibrated probe on 22 September 1995
at about 2108 GMT.  I have the examined the data since the day of the
replacement and find that the new probe is working well.  All E13 EBBR
measurements are presently correct.  The old probe S/N was 460428, the new
S/N is 460413.
Suggestions: 
Measurements:sgp15ebbrE13.b1:
  • temp_trh_right_rr
  • rh_right_mv
more
sgp5ebbrE13.00:
  • Raw data stream - documentation not supported
more
sgp5ebbrE13.b1:
  • rh_top_fraction
  • temp_trh_top
  • temp_trh_bottom
  • rh_bottom_fraction
  • vapor_pressure_top
  • vapor_pressure_bottom
more
sgp30ebbrE13.b1:
  • bowen_ratio
  • temp_trh_top
  • sensible_heat_flux
  • rh_top_fraction
  • latent_heat_flux
  • vapor_pressure_bottom
  • temp_trh_bottom
  • vapor_pressure_top
  • rh_bottom_fraction
more

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