The experimental modification of a barotropic numerical prediction model
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Authors
Lewit, Howard Leo
Subjects
Barotropic model
Development term
Numerical prognosis
Development term
Numerical prognosis
Advisors
Haltiner, G. J.
Date of Issue
1967-06
Date
Publisher
Monterey, California. U.S. Naval Postgraduate School
Language
en_US
Abstract
There were two objectives in the experiments performed on the barotropic model. One was to correct the lag of the troughs and ridges noted in the barotropic model by the Naval Weather Research
Facility, and the other was to introduce a baroclinic development term, The approach to these problems was one which could be incorporated into the Fleet Numerical Weather Facility model with ease. Included herein are the theoretical development of the numerical model, a comparison with the FNWF model and charts illustrative of the results with various values of the pertinent parameters for 24 and 48 hours.
It was observed that the development term causes selective development of lows and highs; but when overdone, spurious short
waves are formed which, however, do not basically change the major
wave location. It was also observed that the function of latitude used here to correct the lag in the horizontal advection of vorticity, resulted in greatly improved movement of troughs and ridges from 30 degrees
to 60 degrees of latitude, but could be further refined to produce even better results.
Type
Thesis
Description
Series/Report No
Department
Meteorology and Oceanography
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
66 p.: ill.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.