Formulation of an Explicit-Multiple-Time-Step Time Integration Method for Use in a Global Primitive Equation Grid ModelSource: Monthly Weather Review:;1982:;volume( 110 ):;issue: 011::page 1603Author:Chao, Winston C.
DOI: 10.1175/1520-0493(1982)110<1603:FOAEMT>2.0.CO;2Publisher: American Meteorological Society
Abstract: With appropriate modifications, a recently proposed explicit-multiple-time-step scheme (EMTSS) is incorporated into the UCLA model. In this scheme, the linearized terms in the governing equations that generate the gravity waves are split into different vertical modes. Each mode is integrated with an optimal time step, and at periodic intervals these modes are recombined. The other terms are integrated with a time step dictated by the CFL condition for low-frequency waves. This large time step requires a special modification of the advective terms in the polar region to maintain stability. Test runs for 72 h show that EMTSS is a stable, efficient and accurate scheme.
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contributor author | Chao, Winston C. | |
date accessioned | 2017-06-09T16:04:03Z | |
date available | 2017-06-09T16:04:03Z | |
date copyright | 1982/11/01 | |
date issued | 1982 | |
identifier issn | 0027-0644 | |
identifier other | ams-60139.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4200776 | |
description abstract | With appropriate modifications, a recently proposed explicit-multiple-time-step scheme (EMTSS) is incorporated into the UCLA model. In this scheme, the linearized terms in the governing equations that generate the gravity waves are split into different vertical modes. Each mode is integrated with an optimal time step, and at periodic intervals these modes are recombined. The other terms are integrated with a time step dictated by the CFL condition for low-frequency waves. This large time step requires a special modification of the advective terms in the polar region to maintain stability. Test runs for 72 h show that EMTSS is a stable, efficient and accurate scheme. | |
publisher | American Meteorological Society | |
title | Formulation of an Explicit-Multiple-Time-Step Time Integration Method for Use in a Global Primitive Equation Grid Model | |
type | Journal Paper | |
journal volume | 110 | |
journal issue | 11 | |
journal title | Monthly Weather Review | |
identifier doi | 10.1175/1520-0493(1982)110<1603:FOAEMT>2.0.CO;2 | |
journal fristpage | 1603 | |
journal lastpage | 1617 | |
tree | Monthly Weather Review:;1982:;volume( 110 ):;issue: 011 | |
contenttype | Fulltext |