DQRID : D130621.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/01/2011000012/31/20142359Does not affect quality
more
Subject:
TWP/MWRRET/C3 - Input sonde data occasionally missing
DataStreams:twpmwrret1liljclouC3.c1, twpmwrret1liljclouC3.s1
Description:
This DQR is entered a precaution since the problem listed below is hard to detect, but 
likely impacts very few data files.  

The sonde data from Darwin, twpsondewnpnC3.b1, is occasionally delayed or the files arrive 
to the DMF out of order.  In some cases the twpmwrret1liljclouC3.c1 and 
twpmwrret1liljclouC3.s1 data are processed before all of the sonde data are available.  It appears that 
this problem actually impacts very few data files, but it is not always clear when this 
problem occurs.  In addition, a 5-day delay was added to the twpmwrret1liljclouC3.c1 
processing on 10/09/12 to lessen the chance of this problem occurring in the future.  

The sonde data are used to calculate the physical retrievals of liquid water path and 
precipitable water vapor, so this problem could potentially impact the best-estimate values 
as well.  This problem only impacts near real-time processing for MWRRET, so the 
twpmwrret1liljclouC3.c2 and twpmwrret1liljclouC3.s2 products are not impacted.
Suggestions: 
If available, use the twpmwrret1liljclouC3.c2 and twpmwrret1liljclouC3.s2 

datastreams, which are processed at a later date with all available sonde data.
Measurements:twpmwrret1liljclouC3.c1:
  • be_lwp
  • phys_rms
  • phys_pwv_uncertainty
  • phys_converge
  • phys_pwv
  • phys_niter
  • be_pwv
  • phys_lwp_uncertainty
  • phys_lwp
more
twpmwrret1liljclouC3.s1:
  • be_lwp
  • be_pwv
more

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