The effect of horizontal resolution on simulation quality in the Community Atmospheric Model, CAM5.1

Wehner, Michael F., Reed, Kevin A., Li, Fuyu, Prabhat, Bacmeister, Julio, Chen, Cheng Ta, Paciorek, Christopher, Gleckler, Peter J., Sperber, Kenneth R., Collins, William D. ORCID: https://orcid.org/0000-0002-4463-9848, Gettelman, Andrew and Jablonowski, Christiane (2014) The effect of horizontal resolution on simulation quality in the Community Atmospheric Model, CAM5.1. Journal of Advances in Modeling Earth Systems, 6 (4). pp. 980-997. ISSN 1942-2466

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Abstract

We present an analysis of version 5.1 of the Community Atmospheric Model (CAM5.1) at a high horizontal resolution. Intercomparison of this global model at approximately 0.25°, 1°, and 2° is presented for extreme daily precipitation as well as for a suite of seasonal mean fields. In general, extreme precipitation amounts are larger in high resolution than in lower-resolution configurations. In many but not all locations and/or seasons, extreme daily precipitation rates in the high-resolution configuration are higher and more realistic. The high-resolution configuration produces tropical cyclones up to category 5 on the Saffir-Simpson scale and a comparison to observations reveals both realistic and unrealistic model behavior. In the absence of extensive model tuning at high resolution, simulation of many of the mean fields analyzed in this study is degraded compared to the tuned lower-resolution public released version of the model.

Item Type:	Article
Additional Information:	Publisher Copyright: © 2014. The Authors.
Uncontrolled Keywords:	extreme precipitation,global atmospheric modeling,high resolution,tropical cyclones,global and planetary change,environmental chemistry,general earth and planetary sciences ,/dk/atira/pure/subjectarea/asjc/2300/2306
Faculty \ School:	Faculty of Science > School of Environmental Sciences
Related URLs:	https://www.scopus.com/pages/publication...
Depositing User:	LivePure Connector
Date Deposited:	06 Jul 2026 14:32
Last Modified:	08 Jul 2026 14:33
URI:	https://ueaeprints.uea.ac.uk/id/eprint/103653
DOI:	10.1002/2013MS000276

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