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

Journal Article · · Journal of Advances in Modeling Earth Systems
DOI:https://doi.org/10.1002/2013MS000276· OSTI ID:1213425
 [1];  [2];  [1];  [1];  [2];  [3];  [4];  [5];  [5];  [1];  [2];  [6]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. National Center for Atmospheric Research, Boulder, CO (United States)
  3. National Taiwan Normal Univ., Taipei (Taiwan)
  4. Univ. of California, Berkeley, CA (United States)
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  6. Univ. of Michigan, Ann Arbor, MI (United States)

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.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231; AC52-07NA27344; SC0006684
OSTI ID:
1213425
Alternate ID(s):
OSTI ID: 1407263; OSTI ID: 1411698
Report Number(s):
LLNL-JRNL-643417
Journal Information:
Journal of Advances in Modeling Earth Systems, Vol. 6, Issue 4; ISSN 1942-2466
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 198 works
Citation information provided by
Web of Science

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