Cascade interpolation for semi-Lagrangian advection over the sphere

被引:40
|
作者
Nair, R [1 ]
Côté, J [1 ]
Staniforth, A [1 ]
机构
[1] Environm Canada, Meteorol Res Branch, Ottawa, ON, Canada
关键词
cascade interpolation; idealized cyclogenesis; semi-Lagrangian advection; spherical domain;
D O I
10.1256/smsqj.55616
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
A cascade interpolator, previously proposed by the authors for semi-Lagrangian advection in Cartesian geometry, is extended to spherical geometry. It is evaluated using two test problems-solid-body rotation and strong deformational flow-and found to be both accurate and efficient. The second problem is particularly challenging. It is a generalization to spherical geometry of Doswell's idealized cyclogenesis problem with an exact solution.
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页码:1445 / 1468
页数:24
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