Campus Units

Geological and Atmospheric Sciences

Document Type

Article

Publication Version

Published Version

Publication Date

12-2011

Journal or Book Title

Acta Geophysica

Volume

59

Issue

6

First Page

1158

Last Page

1167

DOI

10.2478/s11600-011-0032-2

Abstract

This study evaluates the capability of a non-hydrostatic global climate model with grid stretching (CEU) that uses NCAR Community Atmospheric Model (CAM) physics and EULAG dynamics. We compare CEU rainfall with that produced by CAM using finite volume dynamics (CFV). Both models simulated climate from 1996 to 2000, using the same parameterization schemes.

CEU and CFV both simulate well the observed global rainfall pattern. However, with same grid, CEU performs better than CFV in simulating the annual cycles of precipitation over our target region of West Africa. The reason is that it simulates African easterly jet and monsoon circulations better than CFV. CEU simulations with horizontal grid stretching to 0.5° are markedly better than those using CAM’s standard 2.0°×2.5° grid.

Comments

This article is from Acta Geophysica 59 (2016): 1158-1167, doi:10.2478/s11600-011-0032-2. Posted with permission.

Rights

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. (CC BY-NC-ND 3.0)

Copyright Owner

Institute for Geophysics, Polish Academy of Sciences

Language

en

File Format

application/pdf

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