2010 2(4)

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Pages:

128 - 134

Language:

RU

Ref.:

16


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2010_2(4)_26.pdf

 

 

AN EFFICIENT TIME SPLITTING SCHEME FOR NONHYDROSTATIC ATMOSPHERIC MODEL

Burshteyn A.B., Burshteyn L.K.

Federal University of Pelotas, Capao do Leao, Brazil


Citation:

Burshteyn, A.B. and Burshteyn, L.K., (2010) An efficient time splitting scheme for nonhydrostatic atmospheric model, Modern Science: Researches, Ideas, Results, Technologies, Iss. #2(4), PP. 128 - 134.


Keywords:

atmospheric model; numerical forecast; semi-implicit method; splitting technique


Abstracts:

In this study we apply splitting techniques in the context of the semi-implicit approach in order to construct computationally efficient and accurate numerical scheme for large-scale atmospheric dynamics model. Description of the designed numerical algorithm is provided and its properties of accuracy and stability are discussed. Performed numerical experiments with the actual atmospheric data of pressure, temperature and wind showed that the proposed scheme supplies accurate forecast fields for the increased time steps chosen in accordance with the physical requirements. Comparison of the developed scheme with the standard semi-implicit method and more explicit algorithm revealed advantages of the proposed approach.


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