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A sample computation of kinematic properties from cloud motion vectors.Distributions of relative vorticity and balanced height have been computed from the cloud velocities associated with the cloud structure of an extratropical cyclone over the continental United States during a three-day period in March 1970. Cloud motions are assigned either to a 'mid-level,' or to a 'high level.' Derived vorticity and balanced height are compared with concurrent National Meteorological Center (NMC) analyses and also with similar kinematic quantities obtained from rawins at three constant-pressure levels. The computations of relative vorticity using mid-level cloud motion vectors show encouraging results. Patterns of computed cyclonic vorticity are related to the development, location, and movement of the surface cyclone. The analyses suggest that the 'mid-level' corresponds best to the 700-mb level. The vorticity analysis from the 'high-level' motion vectors presented difficulties.
Document ID
19720050279
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Viezee, W.
Serebreny, S. M.
Mancuso, R. L.
(Stanford Research Institute Menlo Park, Calif., United States)
Shenk, W. E.
(NASA Goddard Space Flight Center Greenbelt, Md., United States)
Date Acquired
August 6, 2013
Publication Date
June 1, 1972
Publication Information
Publication: Journal of Applied Meteorology
Volume: 11
Subject Category
Meteorology
Accession Number
72A33945
Distribution Limits
Public
Copyright
Other

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