文章基本信息

标题：Simulation of subgrid orographic precipitation with an embedded 2‐D cloud‐resolving model
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作者：Joon‐Hee Jung ; Akio Arakawa
期刊名称：Journal of Advances in Modeling Earth Systems
电子版ISSN：1942-2466
出版年度：2016
卷号：8
期号：1
页码：31-40
DOI：10.1002/2015MS000539
出版社：John Wiley & Sons, Ltd.
摘要：By explicitly resolving cloud‐scale processes with embedded two‐dimensional (2‐D) cloud‐resolving models (CRMs), superparameterized global atmospheric models have successfully simulated various atmospheric events over a wide range of time scales. Up to now, however, such models have not included the effects of topography on the CRM grid scale. We have used both 3‐D and 2‐D CRMs to simulate the effects of topography with prescribed “large‐scale” winds. The 3‐D CRM is used as a benchmark. The results show that the mean precipitation can be simulated reasonably well by using a 2‐D representation of topography as long as the statistics of the topography such as the mean and standard deviation are closely represented. It is also shown that the use of a set of two perpendicular 2‐D grids can significantly reduce the error due to a 2‐D representation of topography.
关键词：subgrid orographic precipitation;cloud‐resolving model (CRM);multiscale modeling framework (MMF)