Some numerical aspects of developing an operational primitive-equation model for the tropics.
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Author
Langland, Rodger Alfred
Date
1972-03Advisor
Elsberry, Russell L.
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Show full item recordAbstract
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.Collections
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