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Some numerical aspects of developing an operational primitive-equation model for the tropics.

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Author
Langland, Rodger Alfred
Date
1972-03
Advisor
Elsberry, Russell L.
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Abstract
A barotropic primitive equation model on a global tropical grid using operational real data is used to test various boundary conditions and methods of initialization including numerical variational analysis. Comparisons of forecast accuracy are made between staggered and non-staggered grids. All prediction models produce better verification statistics than persistence, with the staggered grid verifying better than the full grid. This appears to be a result of two-gridlength noise being of greater magnitude in the full grid model. Less altering of individual synoptic systems occurs in the variational analysis initialization compared to two forms of the nonlinear balance equation. As a result, nondivergent variational analysis input fields to the prediction models result in the best verification values.
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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.
URI
http://hdl.handle.net/10945/16355
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