文章基本信息

标题：Sensitivity of limited area model data assimilation to lateral boundary condition fields
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作者：Nils Gustafsson
期刊名称：Tellus A: Dynamic Meteorology and Oceanography
电子版ISSN：1600-0870
出版年度：1990
卷号：42
期号：1
页码：109-115
DOI：10.3402/tellusa.v42i1.11864
摘要：Experiments with a limited area model forecasting system have been carried out to show the importance of accurate lateral boundary conditions, also during data assimilation forecast cycles. Advection of observed information from data-dense areas to data-sparse areas is an important process in any data assimilation, and for limited area assimilation, this process should also work properly across the lateral boundaries. A case study including a rapid cyclogenesis in the vicinity of Iceland is used to illustrate the deterioration of forecast quality as a result of too old forecast boundaries during data assimilation.