Data Quality Reports for Session: 186154 User: singha1 Completed: 06/14/2017


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D030729.4SGP/EBBR/E22 - AEM Hung Inbetween Home Positionssgp30ebbrE22.b1Incorrect
D050719.14SGP/EBBR/E22 - Improved EBBR CR10 Programsgp30ebbrE22.b1Does not affect quality


DQRID : D030729.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/16/2003033007/23/20031830Incorrect
07/24/2003150008/06/20031730Incorrect
Subject:
SGP/EBBR/E22 - AEM Hung Inbetween Home Positions
DataStreams:sgp30ebbrE22.b1
Description:
The AEM was hung inbetween home positions.
Measurements:sgp30ebbrE22.b1:
  • Latent heat flux(latent_heat_flux)
  • bowen_ratio
  • vapor_pressure_top
  • rh_bottom_fraction
  • temp_trh_bottom
  • rh_top_fraction
  • Sensible heat flux(sensible_heat_flux)
  • temp_air_top
  • vapor_pressure_bottom
  • temp_air_bottom
  • temp_trh_top


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DQRID : D050719.14
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/01/2001000003/30/20051930Does not affect quality
Subject:
SGP/EBBR/E22 - Improved EBBR CR10 Program
DataStreams:sgp30ebbrE22.b1
Description:
Effective 20050330.1930, the EBBR.E20 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050330, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE20.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE20.a1).
Measurements:sgp30ebbrE22.b1:
  • Latent heat flux(latent_heat_flux)
  • Sensible heat flux(sensible_heat_flux)
  • Average soil heat flow at the surface(surface_soil_heat_flux_avg)


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