DQRID : D980526.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/14/1997213005/12/19981850Suspect
more
Subject:
EBBR E8 Net Radiation Data Quality
DataStreams:sgp30ebbrE8.b1, sgp15ebbrE8.b1, sgp5ebbrE8.b1
Description:
On 14 July 1997 lightning struck the EBBR at E8.  A number of sensors and
components needed to be replaced.  One component that was not replaced, a
J-panel, suffered some damage that was not obvious at the time.
Also, changes in sensors eventually required a change in the CR10 program 
to accomodate new calibration factors.  A new program was installed on 14
October.  Unfortunately, an incorrect nighttime calibration for the net
radiation was contained in the new program provided by the EBBR vendor REBS.
The calibration problem will be covered in a separate DQR.

The J-panel problem began to surface on 14 October as well, with most
net radiation values being smaller than correct values during the day, and 
large negative at night; the latter was partially from the J-panel problem
and partially from the incorrect nighttime calibration.  All net radiation
values, nighttime and daytime from 14 October 1997 through 12 May 1998 need
to be examined carefully (and compared with other nearby sites) to determine
if they are correct, and nighttime values need to be corrected.  Much of
the latent and sensible heat flux data is corrupted by both problems.  

The correction to nightime values will be covered in two subsequent DQRs, as
two net radiometers, with different calibrations, have been used at E8 since
14 October 1997.
Suggestions: 
Measurements:sgp5ebbrE8.b1:
  • lon
  • temp_trh_top
  • temp_reference
  • wspd_arith_mean
  • temp_trh_bottom
  • rh_top_fraction
  • net_radiation
  • wdir_vec_mean
  • wdir_vec_std
  • alt
  • home_signal
  • vapor_pressure_top
  • lat
  • temp_air_bottom
  • rh_bottom_fraction
  • base_time
  • temp_air_top
  • time_offset
  • wspd_vec_mean
  • atmos_pressure
  • vapor_pressure_bottom
more
sgp15ebbrE8.b1:
  • wdir_vec_mean_mv
  • lon
  • net_radiation_mv
  • temp_air_left
  • temp_trh_left_rr
  • wspd_arith_mean
  • rh_right_mv
  • soil_temp_1_rr
  • soil_heat_flow_2_mv
  • soil_moisture_2_r
  • temp_trh_right_rr
  • time_offset
  • soil_heat_flow_1_mv
  • rh_left_mv
  • home_signal
  • soil_moisture_1_r
  • soil_heat_flow_4_mv
  • soil_moisture_5_r
  • base_time
  • soil_temp_4_rr
  • soil_heat_flow_3_mv
  • atmos_pressure_mv
  • soil_temp_5_rr
  • battery_voltage
  • soil_moisture_4_r
  • soil_temp_2_rr
  • temp_reference_rr
  • temp_air_right
  • soil_heat_flow_5_mv
  • soil_temp_3_rr
  • alt
  • soil_moisture_3_r
  • lat
more
sgp30ebbrE8.b1:
  • soil_moisture_3
  • soil_moisture_4
  • home_signal_30
  • soil_moisture_5
  • wdir_vec_std
  • soil_moisture_1
  • soil_moisture_2
  • temp_air_bottom
  • surface_soil_heat_flux_5
  • surface_soil_heat_flux_3
  • lon
  • surface_soil_heat_flux_4
  • surface_soil_heat_flux_1
  • surface_soil_heat_flux_2
  • sensible_heat_flux
  • soil_temp_5
  • soil_temp_3
  • soil_temp_4
  • soil_temp_1
  • soil_temp_2
  • base_time
  • surface_soil_heat_flux_avg
  • temp_air_top
  • latent_heat_flux
  • wdir_vec_mean
  • wspd_vec_mean
  • soil_heat_capacity_1
  • soil_heat_capacity_5
  • soil_heat_capacity_4
  • soil_heat_capacity_3
  • soil_heat_capacity_2
  • rh_top_fraction
  • vapor_pressure_top
  • corr_soil_heat_flow_5
  • bowen_ratio
  • net_radiation
  • corr_soil_heat_flow_3
  • temp_trh_top
  • corr_soil_heat_flow_4
  • corr_soil_heat_flow_1
  • corr_soil_heat_flow_2
  • vapor_pressure_bottom
  • temp_trh_bottom
  • wspd_arith_mean
  • time_offset
  • lat
  • temp_reference
  • alt
  • rh_bottom_fraction
  • home_signal_15
  • energy_storage_change_5
  • energy_storage_change_4
  • energy_storage_change_3
  • energy_storage_change_2
  • energy_storage_change_1
  • atmos_pressure
  • soil_heat_flow_1
  • soil_heat_flow_3
  • soil_heat_flow_2
  • soil_heat_flow_5
  • soil_heat_flow_4
more

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