DQRID : D931108.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
11/01/1993170011/04/19930230Suspect
11/01/1993013011/01/19930630Suspect
10/25/1993230010/27/19930600Suspect
10/31/1993043010/31/19930830Suspect
10/24/1993220010/25/19930500Suspect
10/25/1993163010/25/19932100Suspect
10/24/1993143010/24/19931930Suspect
10/28/1993153010/29/19930830Suspect
10/27/1993120010/27/19931300Suspect
10/23/1993183010/24/19930000Suspect
10/31/1993170011/01/19930030Suspect
10/27/1993163010/27/19931730Suspect
10/27/1993183010/28/19930100Suspect
11/04/1993070011/04/19931830Suspect
10/23/1993010010/23/19930330Suspect
10/31/1993103010/31/19931600Suspect
10/25/1993070010/25/19930800Suspect
more
Subject:
SGP/EBBR/E4 - Reprocess: Intermittently bad soil heat flux sensor #4
DataStreams:sgp30ebbrE4.b1, sgp15ebbrE4.b1
Description:
On October 23, 1993 soil heat flux sensor #4 (which had been installed on
September 23, 1993) of the Plevna, KS EBBR (E4) developed an intermittent poor
electrical contact with the multiplexer.  Corrupted 30 minute values of shf4,
c_shf4, g4, ave_shf, h, and e, and corrupted 15 minute values of mv_hft4
resulted from this situation.  

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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