DQRID : D980603.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/14/1997220004/20/19981720Suspect
more
Subject:
EBBR E8 Adjustment of Negative Net Radiation Values
DataStreams:sgp30ebbrE8.b1, sgp5ebbrE8.b1
Description:
Please see DQR D980526.2 for some background information on the cause 
of the problem described here.

On 14 October 1997 a new CR10 program was installed at E8 EBBR.  The program
contained the wrong calibration coefficient for negative net radiations.
A multiplier had been left out of the computation of the coefficient by
the vendor.  All negative net radiation values during the stated period
need to be DIVIDED by 13.88.  Only the 5 minute and 30 minute q values are
affected.  The 15 minute mv_q values are correct.

Other values affected are 30 minute h and e, which would need to be 
recalculated from:

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

h = -(e + ave_shf + q)
Suggestions: 
Measurements:sgp5ebbrE8.b1:
  • lon
  • temp_trh_top
  • temp_reference
  • temp_air_bottom
  • wspd_arith_mean
  • temp_trh_bottom
  • rh_bottom_fraction
  • base_time
  • rh_top_fraction
  • net_radiation
  • temp_air_top
  • time_offset
  • wspd_vec_mean
  • atmos_pressure
  • wdir_vec_mean
  • wdir_vec_std
  • alt
  • vapor_pressure_bottom
  • home_signal
  • vapor_pressure_top
  • lat
more
sgp30ebbrE8.b1:
  • soil_moisture_3
  • soil_moisture_4
  • home_signal_30
  • soil_moisture_5
  • vapor_pressure_bottom
  • soil_moisture_1
  • wdir_vec_std
  • soil_moisture_2
  • temp_air_bottom
  • temp_trh_bottom
  • wspd_arith_mean
  • surface_soil_heat_flux_5
  • surface_soil_heat_flux_3
  • lon
  • surface_soil_heat_flux_4
  • time_offset
  • surface_soil_heat_flux_1
  • surface_soil_heat_flux_2
  • sensible_heat_flux
  • soil_temp_5
  • lat
  • soil_temp_3
  • soil_temp_4
  • soil_temp_1
  • soil_temp_2
  • base_time
  • temp_reference
  • alt
  • surface_soil_heat_flux_avg
  • temp_air_top
  • latent_heat_flux
  • wdir_vec_mean
  • rh_bottom_fraction
  • wspd_vec_mean
  • home_signal_15
  • soil_heat_capacity_1
  • soil_heat_capacity_5
  • soil_heat_capacity_4
  • energy_storage_change_5
  • soil_heat_capacity_3
  • energy_storage_change_4
  • soil_heat_capacity_2
  • energy_storage_change_3
  • energy_storage_change_2
  • energy_storage_change_1
  • atmos_pressure
  • rh_top_fraction
  • vapor_pressure_top
  • soil_heat_flow_1
  • corr_soil_heat_flow_5
  • net_radiation
  • bowen_ratio
  • corr_soil_heat_flow_3
  • temp_trh_top
  • corr_soil_heat_flow_4
  • corr_soil_heat_flow_1
  • soil_heat_flow_3
  • corr_soil_heat_flow_2
  • soil_heat_flow_2
  • soil_heat_flow_5
  • soil_heat_flow_4
more

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