DQRID : D951116.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
11/10/1995003011/10/19951530Does not affect quality
more
Subject:
SGP/EBBR/E20 - Soil Heat Flow Zero Under Unchanging Conditions
DataStreams:sgp30ebbrE20.b1
Description:
This DQR is written to inform users of the data that the EBBR soil heat flow
measurements of zero during much of 11 November 1995 at E20, Meeker, OK are
correct values.  Nearly unchanging conditions of net radiation, air
temperature, and soil moisture, plus high wind speeds and near neutral
atmospheric stability, resulted in almost unchanging conditions of
soil temperature and ten and a half hours of zero soil heat flow
output from all soil heat flow plates (some plates outputted zero for
longer than this).  The change in energy storage (determined from the
change in temperature with time of the soil above the plates) was very
nearly zero also during the period of interest.

Such an extended period of zero soil heat flow and the accompanying
unchanging soil and atmospheric conditions is quite rare and therefore
worth noting here in case someone using the data might mistakenly think
that the data is incorrect.
Suggestions: 
Measurements:sgp30ebbrE20.b1:
  • surface_soil_heat_flux_avg
  • home_signal_15
  • bowen_ratio
  • temp_air_top
  • temp_trh_top
  • lon
  • rh_bottom_fraction
  • temp_reference
  • sensible_heat_flux
  • alt
  • soil_moisture_5
  • temp_trh_bottom
  • soil_moisture_4
  • soil_moisture_3
  • soil_moisture_2
  • vapor_pressure_bottom
  • soil_moisture_1
  • lat
  • home_signal_30
  • wdir_vec_mean
  • surface_soil_heat_flux_4
  • surface_soil_heat_flux_3
  • surface_soil_heat_flux_2
  • surface_soil_heat_flux_1
  • soil_heat_capacity_5
  • temp_air_bottom
  • soil_heat_capacity_4
  • latent_heat_flux
  • soil_heat_capacity_3
  • soil_heat_capacity_2
  • wspd_arith_mean
  • surface_soil_heat_flux_5
  • soil_temp_3
  • wdir_vec_std
  • soil_heat_flow_4
  • net_radiation
  • soil_heat_capacity_1
  • soil_heat_flow_5
  • soil_temp_4
  • soil_temp_5
  • soil_heat_flow_2
  • soil_heat_flow_3
  • soil_heat_flow_1
  • atmos_pressure
  • soil_temp_1
  • soil_temp_2
  • time_offset
  • rh_top_fraction
  • energy_storage_change_3
  • energy_storage_change_2
  • energy_storage_change_1
  • vapor_pressure_top
  • base_time
  • corr_soil_heat_flow_4
  • corr_soil_heat_flow_3
  • energy_storage_change_5
  • energy_storage_change_4
  • corr_soil_heat_flow_5
  • corr_soil_heat_flow_2
  • wspd_vec_mean
  • corr_soil_heat_flow_1
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