DQRID : D140321.4
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/10/2014185304/14/20142032Suspect
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Subject:
TMP/KASACR/M1 - Reprocess: PPI scans at vertical incidence
DataStreams:tmpkasacrppiM1.a1
Description:
During this time period, PPI scans in azimuth were done at zenith, i.e. elevation was 90 
degrees.  This data is similar to vertically pointing data.  However, if there is any 
small unintended off-zenith radar misalignment, scanning in azimuth could impact the measured 
mean Doppler velocity due to variations in the horizontal velocity component sampled as 
part of the radial velocity measurement.  In fact, the velocity data from these scans can 
be used to diagnose any off-zenith component in the 'vertical' elevation.
Suggestions: 
Use this data with caution. It will be reprocessed and stored as a different scan 

type, 'ZPPI' (zenith-pointing PPI), to avoid confusion with conventional low-elevation PPI 
scans.
Measurements:tmpkasacrppiM1.a1:
  • mean_doppler_velocity
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