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The growth of prognostic differences between GLAS model forecasts from SAT and NOSAT initial conditionsA study has been conducted to determine the cause of a major synoptic difference in the 72 h GLAS model forecasts from 0000 GMT 19 February 1976 that resulted from the inclusion of satellite data. The prognostic differences that resulted in diverging cyclone paths between the forecast that included satellite temperature soundings (SAT) and the forecast that excluded satellite sounding data (NOSAT) have been traced to initial state differences in the upper level wind and temperature patterns. These modifications enhanced the variation of thermal vorticity and thermal advection across the cyclone center and in the SAT case, gave a greater initial rate of movement of the upper-level vorticity maximum associated with the surface cyclone.
Document ID
19820059457
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Atlas, R.
(NASA Goddard Space Flight Center Laboratory for Atmospheric Sciences, Greenbelt, MD, United States)
Date Acquired
August 10, 2013
Publication Date
July 1, 1982
Publication Information
Publication: Monthly Weather Review
Volume: 110
Subject Category
Meteorology And Climatology
Accession Number
82A42992
Distribution Limits
Public
Copyright
Other

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