DQRID : D940826.2
Start DateStart TimeEnd DateEnd Time
08/17/1994170008/17/19942300
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Subject:
SGP/EBBR/E9 - Reprocess: Soil Heat Flux Out of Range
DataStreams:sgp30ebbrE9.b1, sgp15ebbrE9.b1
Description:
For an unknown reason, soil heat flux sensor #5 indicated too small a value
for the period listed above.  This resulted in an incorrect average of soil
heat flow for the five sets of soil heat flow plates, and therefore
incorrect e (latent heat flux) and h (sensible heat flux) in the 30 minute
data.  The following data values are incorrect:

15 minute: mv_hft5

30 minute: shf5, c_shf5, ave_shf, g5, e, h

The latent and sensible heat flux can be recalculated by using only soil
heat flows 1 through 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:sgp30ebbrE9.b1:
  • Surface latent heat flux(latent_heat_flux)
  • Surface soil heat flux, average of fluxes 1-5(surface_soil_heat_flux_avg)
  • Soil heat flow 5(soil_heat_flow_5)
  • Soil heat flow 5, corrected for soil moisture(corr_soil_heat_flow_5)
  • Surface soil heat flux 5(surface_soil_heat_flux_5)
  • Surface sensible heat flux(sensible_heat_flux)
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sgp15ebbrE9.b1:
  • Soil heat flow 5 (mV)(soil_heat_flow_5_mv)
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