Semi-Implicit Time Integration in Limited Area Model

Abstract

An analysis of the Australian Bureau of Meteorology Research Centre (BMRC) semi-implicit scheme is presented. The scheme is discussed for possible adaptation to the Relocatable Limited-Area Model (RLAM). It is found that the scheme has certain peculiarities which make it difficult to blend with the other versions of RLAM. It is shown, for example, that a small change in representing vertical differencing can have a severely damaging impact on the surface pressure forecast. Keywords: Semi-implicit scheme, Numerical method, Numerical weather prediction, Regional modeling, Time stepping.

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Document Details

Document Type
Technical Report
Publication Date
Nov 12, 1989
Accession Number
ADA226818

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  • Isidore Halberstam

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