On the accuracy of the semi-geostrophic approximation

被引：14

作者：

Cullen, MJP ^{[1
]}

机构：

[1] European Ctr Medium Range Weather Forecasts, Reading RG2 9AX, Berks, England

来源：

QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY | 2000年 / 126卷 / 564期

关键词：

accuracy; balance; semi-geostrophic;

D O I：

10.1256/smsqj.56412

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 [大气科学]; 070601 [气象学];

摘要：

The semi-geostrophic model has been widely used to understand atmospheric flows such as fronts and developing cyclones. However, there have been a number of demonstrations of its lack of accuracy. This paper presents theory and computations to demonstrate that the semi-geostrophic model is an accurate approximation to the primitive equations either on horizontal scales larger than the Rossby radius of deformation or when the ratio of horizontal to vertical scales is greater than f/N.

引用

页码：1099 / 1115

页数：17

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