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

Michael F. Wehner, Kevin A. Reed, Fuyu Li, Prabhat, Julio Bacmeister, Cheng Ta Chen, Christopher Paciorek, Peter J. Gleckler, Kenneth R. Sperber, William D. Collins, Andrew Gettelman, Christiane Jablonowski

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    126 引文 斯高帕斯(Scopus)

    摘要

    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.

    原文英語
    頁(從 - 到)980-997
    頁數18
    期刊Journal of Advances in Modeling Earth Systems
    6
    發行號4
    DOIs
    出版狀態已發佈 - 2014 十二月 1

    ASJC Scopus subject areas

    • Global and Planetary Change
    • Environmental Chemistry
    • Earth and Planetary Sciences(all)

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