Data Quality Reports for Session: 115463 User: f1niu Completed: 11/04/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D070416.4SGP/CO2FLX/C1 - downwelling longwave hemispheric irradiance incorrectsgp30co2flx4mmetC1.b1
D070803.2SGP/CO2FLX/C1 - Disturbance around sitesgp30co2flx25mC1.b1, sgp30co2flx4mC1.b1, sgp30co2flx4mmetC1.b1, sgp30co2flx60mC1.b1
D070918.3SGP/CO2FLX/C1 - Farm operationsgp30co2flx4mmetC1.b1


DQRID : D070416.4
Start DateStart TimeEnd DateEnd Time
04/28/2004000004/02/20071930
Subject:
SGP/CO2FLX/C1 - downwelling longwave hemispheric irradiance incorrect
DataStreams:sgp30co2flx4mmetC1.b1
Description:
Downwelling longwave radiation measurements (variable "r_down_long_hemisp") are bad due to 
a wiring issue. Users should not use the downwelling longwave hemispheric irradiance 
during this period. The downwelling shortwave and longwave radiation at CF is also available 
from the Broadband Radiometer Station (BRS).
Measurements:sgp30co2flx4mmetC1.b1:
  • downwelling longwave hemispheric irradiance t_rad corrected(r_down_long_hemisp)

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DQRID : D070803.2
Start DateStart TimeEnd DateEnd Time
07/24/2007130007/26/20072359
Subject:
SGP/CO2FLX/C1 - Disturbance around site
DataStreams:sgp30co2flx25mC1.b1, sgp30co2flx4mC1.b1, sgp30co2flx4mmetC1.b1, sgp30co2flx60mC1.b1
Description:
A bulldozer used to excavate the SGP Tower anchors was right around (within 10 feet) our 
systems.
Measurements:sgp30co2flx60mC1.b1:
  • mean co2 concentration (c)(mean_c)
  • WPL corrected CO2 flux(fc_corr)
sgp30co2flx4mC1.b1:
  • WPL corrected CO2 flux(fc_corr)
  • mean co2 concentration (c)(mean_c)
sgp30co2flx25mC1.b1:
  • mean co2 concentration (c)(mean_c)
  • WPL corrected CO2 flux(fc_corr)
sgp30co2flx4mmetC1.b1:
  • WPL corrected CO2 flux(fc_corr)
  • mean co2 concentration (c)(mean_c)

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DQRID : D070918.3
Start DateStart TimeEnd DateEnd Time
08/22/2007183009/07/20071800
Subject:
SGP/CO2FLX/C1 - Farm operation
DataStreams:sgp30co2flx4mmetC1.b1
Description:
Soil temperature, soil moisture, soil heat flux and upwelling surface radiation (long, 
short, and PAR) measurements were not valid from 20070822 to 20070907 due to farm operations.
Measurements:sgp30co2flx4mmetC1.b1:
  • average of two lower soil temperature sensors(mean_t_soil_lower)
  • standard error of mean_t_soil_upper note maximum of two values used in
    calculation(stderr_mean_t_soil_upper)
  • photosynthetic photon flux density (PAR)(ppfd_up)
  • average of four lower soil moisture sensors(mean_m_soil_lower)
  • standard error of mean_t_soil_middle note maximum of two values used in
    calculation(stderr_mean_t_soil_middle)
  • average of two middle soil temperature sensors(mean_t_soil_middle)
  • upwelling shortwave hemispheric irradiance t_rad corrected(r_up_short_hemisp)
  • standard error of mean_m_soil_upper(stderr_mean_m_soil_upper)
  • average of four upper soil moisture sensors(mean_m_soil_upper)
  • standard error of mean_t_soil_lower note maximum of two values used in
    calculation(stderr_mean_t_soil_lower)
  • average of up to four soil heat flux sensors(mean_g_soil)
  • upwelling longwave hemispheric irradiance t_rad corrected(r_up_long_hemisp)
  • average of two upper soil temperature sensors(mean_t_soil_upper)
  • standard error of mean_m_soil_lower(stderr_mean_m_soil_lower)
  • standard error of mean_g_soil(stderr_mean_g_soil)

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