A mass restoration scheme for limited-area models with semi-Lagrangian advection

被引：30
|
作者：
Aranami, Kohei [1 ,2 ]
Davies, Terry [1 ]
Wood, Nigel [1 ]
机构：
[1] Met Off, Exeter, Devon, England
[2] Japan Meteorol Agcy, Numer Predict Div, Chiyoda Ku, Tokyo 1008122, Japan
来源：
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY | 2015年 / 141卷 / 690期
关键词：
mass conservation; numerical weather prediction; monotonicity; lateral boundary; SHALLOW-WATER EQUATIONS; TRANSPORT PROBLEMS; EFFICIENT SCHEME; SLICE; SPHERE;
D O I：
10.1002/qj.2482
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
A method for imposing mass conservation in limited-area models (LAMs) with non-conservative semi-Lagrangian advection is proposed. The key feature of the scheme is to estimate the budget of the total mass through the lateral boundaries by splitting the original field into interior and exterior areas and to advect them individually. Idealized and real test cases show the reduction in error of the total mass, especially in the case when a monotonicity filter is applied.
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页码：1795 / 1803
页数：9
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