DQRID : D020701.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
09/11/1993170009/23/19931600Suspect
more
Subject:
SGP/EBBR/E4 - Reprocess: Bad soil heat flux sensor #4
DataStreams:sgp30ebbrE4.b1, sgp15ebbrE4.b1
Description:
On September 11, 1993 soil heat flux sensor #4 of the Plevna, KS EBBR
(E4) malfunctioned.  The sensor was replaced September 23, 1993 before
1600. Corrupted 30 minute values of shf4, c_shf4, g4, ave_shf, h, and e,
and corrupted 15 minute values of mv_hft4 resulted from the sensor
malfunction.  

The quantities shf4, c_shf4, g4, and mv_hft4 are bad data values and are not 
recoverable.  The other quantities can be recalculated using the three
functioning sets of soil sensors. (Note: Soil heat flux sensor #5 was also
malfunctioning during the time periods identified and has therefore been
eliminated from the recalculation equations.  This problem is identified
in a separate DQR.)

ave_shf = (g1 + g2 + g3)/3
e = -(q + ave_shf)/(1 + bowen)
h = -(e + ave_shf + q)
Suggestions: 
Recalculate sensible, latent and soil heat fluxes using the equations provided.
Measurements:sgp30ebbrE4.b1:
  • corr_soil_heat_flow_4
  • soil_heat_flow_4
  • latent_heat_flux
  • surface_soil_heat_flux_avg
  • surface_soil_heat_flux_4
  • sensible_heat_flux
more
sgp15ebbrE4.b1:
  • soil_heat_flow_4_mv
more

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