DQRID : D971017.7
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/30/1997170007/30/19971830Incorrect
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Subject:
SGP/EBBR/E22 - Reprocess: E22 EBBR Soil Heat Flow Probe #5 Incorrect Data
DataStreams:sgp30ebbrE22.b1, sgp15ebbrE22.b1
Description:
Soil heat flow probe #5 produced large negative (and incorrect)
values during the period above.  The probe was replaced. Somehow, two half
hour records were produced at 1900 GMT as a result, the first record having
9s for the data fields; the second record is correct.

Values affected (and thus incorrect) include:

15 minute: mv_hft5
30 minute: shf5, c_shf5, g5, ave_shf, e, h.

The latent and sensible heat fluxes can be recalculated by using only soil
heat flows 1, 2, 3, and 4 to calculate the average soil heat flow,

ave_shf = (g1 + g2 + g3 + g4)/4

e = -(q + ave_shf)/(1 + bowen)

h = -(e + ave_shf + q)
Suggestions: 
Measurements:sgp15ebbrE22.b1:
  • soil_heat_flow_5_mv
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sgp30ebbrE22.b1:
  • surface_soil_heat_flux_5
  • sensible_heat_flux
  • corr_soil_heat_flow_5
  • soil_heat_flow_5
  • surface_soil_heat_flux_avg
  • latent_heat_flux
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