Data Quality Reports for Session: 180498 User: koeritzerd1 Completed: 10/14/2016


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D120215.4SGP/MERGESONDE/C1 - Reprocessing Notice (RID 927)sgpmergesonde1maceC1.c1Does not affect quality


DQRID : D120215.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/01/2006000005/30/20122359Does not affect quality
Subject:
SGP/MERGESONDE/C1 - Reprocessing Notice (RID 927)
DataStreams:sgpmergesonde1maceC1.c1
Description:
See below for details of reprocessing that was completed on 20140904.  Original DQR 
category: 4 (Red, Incorrect).

-----------------------------------------------------------

All precip values are incorrectly reported during the period:  

From 20060101-20101231 all precip values are incorrectly reported as missing, or -9999.  

From 20110101-present all precip values are reported as 0 even though the qc_precip 
variable flags the data as missing, or -9999. 

The precipitation data from the co-located surface met station were not actually missing, 
but the MERGESONDE VAP did not properly ingest these data.  While the 0 precip values 
reported after 20110101 in MERGESONDE may be correct on days with no precip, they are not 
actually tied to the measurements from the co-located rain gauge and are due to a VAP 
software error.

To correct this issue, the MERGESONDE software will need to be corrected so the data can 
be reprocessed.  Because precip is a secondary variable in MERGESONDE, this issue is 
considered low priority and the VAP will not be reprocessed until a sufficient number of 
issues in the VAP have been identified.
Measurements:sgpmergesonde1maceC1.c1:
  • Precipitation, total, derived from ETA model(precip)


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