Data Quality Reports for Session: 184181 User: wblumberg Completed: 03/11/2017


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D040217.2SGP/CO2FLX/C1 - Reprocessing User Notessgp30co2flx25mC1.b1Does not affect quality
D041026.1SGP/CO2FLX/C1 - Reprocess: Unitssgp30co2flx25mC1.b1Does not affect quality
D070803.2SGP/CO2FLX/C1 - Disturbance around sitesgp30co2flx25mC1.b1Incorrect


DQRID : D040217.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/18/2002000002/17/20040000Does not affect quality
Subject:
SGP/CO2FLX/C1 - Reprocessing User Notes
DataStreams:sgp30co2flx25mC1.b1
Description:
Format Changes:
  To comply with archive standards, the name of the unlimited dimention variable in the 
cdf level b1 files was changed from 'record' to 'time'. This does not affect data quality.
Measurements:sgp30co2flx25mC1.b1:
  • theta
  • Variance of co2 density(var_c)
  • Monin-Obukhov length scale(Lmoni)
  • Mean horizontal wind speed(mean_rot_u)
  • doy
  • zm
  • Corrected sensible heat flux(h)
  • yyyydddhhmmss
  • Mean H2O density(mean_q)
  • mean_p
  • Additive WPL H correction to fc(fc_wpl_h)
  • Mean sonic temp(mean_t)
  • Wind direction, at 10-m height, 30-min intervals(wdir)
  • site_longitude
  • time_offset
  • base_time
  • site_latitude
  • Variance of rotated u(var_rot_u)
  • rotated variance v(var_rot_v)
  • site_elevation
  • rotated variance w(var_rot_w)
  • WPL corrected latent heat flux(le)
  • friction velocity(ustar)
  • WPL corrected CO2 flux(fc_corr)
  • Mean CO2 density(mean_c)
  • phi
  • variance of variable t(var_t)
  • Variance of q(var_q)
  • WPL LE correction to fc(fc_wpl_le)


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DQRID : D041026.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/18/2002000010/12/20042359Does not affect quality
Subject:
SGP/CO2FLX/C1 - Reprocess: Units
DataStreams:sgp30co2flx25mC1.b1
Description:
Mean CO2 density units are incorrectly labeled as umol m-3. Units should be labeled as 
mmol m-3.
Measurements:sgp30co2flx25mC1.b1:
  • Mean CO2 density(mean_c)


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DQRID : D070803.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/24/2007130007/26/20072359Incorrect
Subject:
SGP/CO2FLX/C1 - Disturbance around site
DataStreams:sgp30co2flx25mC1.b1
Description:
A bulldozer used to excavate the SGP Tower anchors was right around (within 10 feet) our 
systems.
Measurements:sgp30co2flx25mC1.b1:
  • WPL corrected CO2 flux(fc_corr)
  • Mean CO2 density(mean_c)


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