Data assimilation for high-resolution limited-area models

被引：7

作者：

Gustafsson, N ^{[1
]}

Lonnberg, P ^{[1
]}

Pailleux, J ^{[1
]}

机构：

[1] METEO FRANCE, TOULOUSE, FRANCE

来源：

JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN | 1997年 / 75卷 / 1B期

关键词：

D O I：

10.2151/jmsj1965.75.1B_367

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

The present status of development of data assimilation techniques for high resolution limited area models is reviewed and various candidates for a new generation of a data assimilation system are compared. It is concluded that data assimilation based on 3-dimensional or 4-dimensional variational techniques is the most promising approach. Further investigations are needed, however, to find out whether variational data assimilation is feasible over "limited" model integration areas or whether global/hemispheric model integration areas have to be introduced for high resolution limited area data assimilation purposes. The main problem in this connection is the rapid propagation of forecast errors on a global or at least hemispheric atmospheric scale within a time-scale of a few days.

引用

页码：367 / 382

页数：16