Data Quality Reports for Session: 106421 User: kmraisan Completed: 07/09/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050421.2SGP/ECOR/E16 - Reprocess: Incorrectly flagged (marked as "bad") H2O/CO2 datasgp30ecorE16.b1


DQRID : D050421.2
Start DateStart TimeEnd DateEnd Time
02/23/2004000003/13/20050030
Subject:
SGP/ECOR/E16  - Reprocess: Incorrectly flagged (marked as "bad") H2O/CO2 data
DataStreams:sgp30ecorE16.b1
Description:
Due to system clock instability on ECOR computers their system time is adjusted 
approximately once per hour; sometimes this adjustment leads to backward time jumps over midnight, 
into the previous day. In this case all the data based on CO2/H2O measurements might be 
erroneously marked as bad. Below is a list of times when that might have happen. 

SITE    YEAR    MONTH   DAY     HOUR    MINUTE
16      2004    02      23      00      00
16      2004    02      28      00      00
16      2004    03      01      00      00
16      2004    03      09      00      00
16      2004    03      15      00      00
16      2004    03      17      00      00
16      2004    03      22      00      00
16      2004    03      30      00      00
16      2004    04      02      00      00
16      2004    07      22      00      00
16      2004    08      06      00      00
16      2004    09      05      00      00
16      2004    09      20      00      00
16      2005    03      13      00      00
Measurements:sgp30ecorE16.b1:
  • latent heat flux(lv_e)
  • covariance of qc(cvar_qc)
  • rotated covariance vc(cvar_rot_vc)
  • mixing ratio(mr)
  • number of valid c samples(n_good_c)
  • 0=real or 1=dummy value of lv(real_lv)
  • specific heat of moist air(cp)
  • covariance wq(cvar_wq)
  • 0=real or 1=dummy value of rho(real_rho)
  • skewness of variable c(skew_c)
  • mean value of out of range values and spikes of c -9999 if no spikes(mean_spk_c)
  • covariance uq(cvar_uq)
  • mean value of out of range values and spikes of q -9999 if no spikes(mean_spk_q)
  • number of q samples removed due to spikes(n_spk_q)
  • mean co2 concentration (c)(mean_c)
  • rotated covariance uc(cvar_rot_uc)
  • mean water vapor concentration (q)(mean_q)
  • variance of variable q(var_q)
  • latent heat of vaporization(lv)
  • number of bad or out of range q samples(n_bad_q)
  • 0=real or 1=dummy value of mr(real_mr)
  • covariance vq(cvar_vq)
  • Retrieved water vapor density profile(rho)
  • rotated covariance wc(cvar_rot_wc)
  • covariance wc(cvar_wc)
  • 0=real or 1=dummy value of cp(real_cp)
  • skewness of variable q(skew_q)
  • covariance of tq(cvar_tq)
  • covariance uc(cvar_uc)
  • variance of variable c(var_c)
  • rotated covariance wq(cvar_rot_wq)
  • covariance vc(cvar_vc)
  • rotated covariance vq(cvar_rot_vq)
  • number of valid q samples(n_good_q)
  • CO2 flux(fc)
  • covariance of tc(cvar_tc)
  • number of bad or out of range c samples(n_bad_c)
  • number of c samples removed due to spikes(n_spk_c)


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