SBP/EBBR/E9 - Reprocess: Soil Heat Flow Sensor 5 Incorrect Data

Soil heat flow sensor #5 periodically outputted incorrect values during the
period above.  The output often indicated large negative heat flow.  The
sensor connections were tightened on March 20, 1995, which seems to have
corrected the problem.  The data affected (and thus incorrect) includes:

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

The dates and times (GMT) of incorrect values are listed below.  Only half
hour times are listed.

03/10/95  2130
03/11/95  0100-0600, 1530-2330
03/12/95  0000-1930
03/13/95  0500
03/16/95  1830-2330
03/17/95  0000-2330
03/18/95  0000-1100
03/19/95  2100-2330
03/20/95  0000-0400, 1530-1700

The latent and sensible heat fluxes 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)

• 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)

• Soil heat flow 5 (mV)(soil_heat_flow_5_mv)