DQRID : D050421.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/23/2004000003/13/20050030Does not affect quality
more
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
Suggestions: 
Correct data may be restored by reprocessing raw data (sonic and IRGA, 00 level) with 

current ECOR processing program (version 1.9 or later).
Measurements:sgp30ecorE16.b1:
  • lv
  • n_bad_q
  • cvar_tq
  • n_good_c
  • real_rho
  • var_q
  • cvar_rot_vc
  • cvar_rot_vq
  • n_good_q
  • n_spk_q
  • cvar_vq
  • mean_spk_c
  • cvar_uc
  • cvar_wc
  • skew_c
  • fc
  • cvar_qc
  • lv_e
  • mean_q
  • mean_spk_q
  • real_lv
  • n_bad_c
  • cvar_uq
  • mean_c
  • cvar_rot_uc
  • cp
  • skew_q
  • cvar_rot_wc
  • cvar_rot_wq
  • cvar_wq
  • mr
  • var_c
  • cvar_tc
  • cvar_vc
  • real_mr
  • real_cp
  • n_spk_c
  • rho
more

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