Data Quality Reports for Session: 132128 User: kjohnson Completed: 12/10/2010

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D100216.4FKB/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fieldsfkbvceil25kM1.b1
D100729.3FKB/WACR/M1 - Reflectivity and Height OffsetsfkbwacrM1.b1, fkbwacrspeccmaskxpolM1.a0, fkbwacrspeccmaskcopolM1.a0


DQRID : D100216.4
Start DateStart TimeEnd DateEnd Time
03/12/2007000001/01/20082359
Subject:
FKB/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fields
DataStreams:fkbvceil25kM1.b1
Description:
Attribute serial_number: In most cases, this field is not representative of the actual 
serial number of the instrument because the value did not change when an instrument changed 
locations or was replaced with a spare.
   
Variable sum_backscatter: An out-of-range condition for the "sum of detected and 
normalized backscatter" was reported as 0 instead of missing (-9999). The valid range is 0 - 
0.0999 /srad.
Measurements:fkbvceil25kM1.b1:
  • sum_backscatter

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DQRID : D100729.3
Start DateStart TimeEnd DateEnd Time
03/29/2007000001/02/20082359
Subject:
FKB/WACR/M1 - Reflectivity and Height Offsets
DataStreams:fkbwacrM1.b1, fkbwacrspeccmaskxpolM1.a0, fkbwacrspeccmaskcopolM1.a0
Description:
The instrument vendor has informed us of a range (height) offset of 13 m and has provided 
an updated reflectivity calibration.  All values reported for 'Reflectivity' are 
approximately 1.5 dB too low.   In addition, the Reflectivity in the first and fourth range gates 
(starting from the surface) need to be further corrected by an additional 2.7 and -0.9 
dB, respectively. The 'height' field values are 13.33 m too low.  The data will be 
reprocessed to correct these problems.
Measurements:fkbwacrM1.b1:
  • heights
  • Cloud, reflectivity, at altitude(Reflectivity)
fkbwacrspeccmaskxpolM1.a0:
  • Cloud, reflectivity, at altitude(Reflectivity)
  • heights
fkbwacrspeccmaskcopolM1.a0:
  • heights
  • Cloud, reflectivity, at altitude(Reflectivity)

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