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Characteristics of ageostrophic flow in the vicinity of a severe weather outbreak - AVE-SESAME IGOES satellite data was used to examine the ageostrophic flow in the vicinity of severe weather outbreaks along the Red River between Texas and Oklahoma in April 1979. The observations were part of the NASA AVE-SESAME I data on atmospheric states close to severe weather conditions. The Barnes Objective Analysis Technique was employed to analyze the data on a 100 km grid. The ageostrophic wind was defined on a regional scale from satellite data on different levels of cloud wind vectors, with a height change signalling a short-wave system in a long-wave trough. The percentage of deviation of the subgeostrophic winds from the geostrophic wind was calculated, and maximum departure corresponded with the region of greatest storm development. Time cross sections of additions to the ageostrophic flow were made as a function of pressure at 100 mb intervals from 900-100 mb. The ageostrophic acceleration was consistently twice the geostrophic acceleration.
Document ID
19820043044
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Arnold, J. E.
(NASA Marshall Space Flight Center Space Sciences Laboratory, Huntsville, AL, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: Conference on Severe Local Storms
Location: San Antonio, TX
Start Date: January 11, 1982
End Date: January 15, 1982
Accession Number
82A26579
Distribution Limits
Public
Copyright
Other

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