The formulation and atmospheric simulation of the Community Atmosphere Model version 3 (CAM3)
A new version of the Community Atmosphere Model (CAM) has been developed and released to the climate community. CAM Version 3 (CAM3) is an atmospheric general circulation model that includes the Community Land Model (CLM3), an optional slab ocean model, and a thermodynamic sea ice model. The dynamic...
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ftncar:oai:drupal-site.org:articles_10237 2023-07-30T03:55:48+02:00 The formulation and atmospheric simulation of the Community Atmosphere Model version 3 (CAM3) Collins, William (author) Rasch, Philip (author) Boville, Byron (author) Hack, James (author) McCaa, James (author) Williamson, David (author) Briegleb, Bruce (author) Bitz, Cecilia (author) Lin, Shian-Jiann (author) Zhang, Minghua (author) 2006-06 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-019-352 en eng Journal of Climate http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-019-352 ISI:000238148200003 ark:/85065/d7bk1cwp Copyright 2006 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 of the U.S. Copyright Act or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statement, requires written permission or a license form the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at (http://www.ametsoc.org/AMS) or from the AMS at 617-227-2425 or copyright@ametsoc.org. Text article 2006 ftncar 2023-07-17T18:16:37Z A new version of the Community Atmosphere Model (CAM) has been developed and released to the climate community. CAM Version 3 (CAM3) is an atmospheric general circulation model that includes the Community Land Model (CLM3), an optional slab ocean model, and a thermodynamic sea ice model. The dynamics and physics in CAM3 have been changed substantially compared to implementations in previous versions. CAM3 includes options for Eulerian spectral, semi-Lagrangian, and finite-volume formulations of the dynamical equations. It supports coupled simulations using either finite-volume or Eulerian dynamics through an explicit set of adjustable parameters governing the model time step, cloud parameterizations, and condensation processes. The model includes major modifications to the parameterizations of moist processes, radiation processes, and aerosols. These changes have improved several aspects of the simulated climate, including more realistic tropical tropopause temperatures, boreal winter land surface temperatures, surface insolation, and clear-sky surface radiation in polar regions. The variation of cloud radiative forcing during ENSO events exhibits much better agreement with satellite observations. Despite these improvements, several systematic biases reduce the fidelity of the simulations. These biases include underestimation of tropical variability, errors in tropical oceanic surface fluxes, underestimation of implied ocean heat transport in the Southern Hemisphere, excessive surface stress in the storm tracks, and offsets in the 500-mb height field and the Aleutian low. Article in Journal/Newspaper aleutian low Sea ice OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
A new version of the Community Atmosphere Model (CAM) has been developed and released to the climate community. CAM Version 3 (CAM3) is an atmospheric general circulation model that includes the Community Land Model (CLM3), an optional slab ocean model, and a thermodynamic sea ice model. The dynamics and physics in CAM3 have been changed substantially compared to implementations in previous versions. CAM3 includes options for Eulerian spectral, semi-Lagrangian, and finite-volume formulations of the dynamical equations. It supports coupled simulations using either finite-volume or Eulerian dynamics through an explicit set of adjustable parameters governing the model time step, cloud parameterizations, and condensation processes. The model includes major modifications to the parameterizations of moist processes, radiation processes, and aerosols. These changes have improved several aspects of the simulated climate, including more realistic tropical tropopause temperatures, boreal winter land surface temperatures, surface insolation, and clear-sky surface radiation in polar regions. The variation of cloud radiative forcing during ENSO events exhibits much better agreement with satellite observations. Despite these improvements, several systematic biases reduce the fidelity of the simulations. These biases include underestimation of tropical variability, errors in tropical oceanic surface fluxes, underestimation of implied ocean heat transport in the Southern Hemisphere, excessive surface stress in the storm tracks, and offsets in the 500-mb height field and the Aleutian low. |
author2 |
Collins, William (author) Rasch, Philip (author) Boville, Byron (author) Hack, James (author) McCaa, James (author) Williamson, David (author) Briegleb, Bruce (author) Bitz, Cecilia (author) Lin, Shian-Jiann (author) Zhang, Minghua (author) |
format |
Article in Journal/Newspaper |
title |
The formulation and atmospheric simulation of the Community Atmosphere Model version 3 (CAM3) |
spellingShingle |
The formulation and atmospheric simulation of the Community Atmosphere Model version 3 (CAM3) |
title_short |
The formulation and atmospheric simulation of the Community Atmosphere Model version 3 (CAM3) |
title_full |
The formulation and atmospheric simulation of the Community Atmosphere Model version 3 (CAM3) |
title_fullStr |
The formulation and atmospheric simulation of the Community Atmosphere Model version 3 (CAM3) |
title_full_unstemmed |
The formulation and atmospheric simulation of the Community Atmosphere Model version 3 (CAM3) |
title_sort |
formulation and atmospheric simulation of the community atmosphere model version 3 (cam3) |
publishDate |
2006 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-019-352 |
genre |
aleutian low Sea ice |
genre_facet |
aleutian low Sea ice |
op_relation |
Journal of Climate http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-019-352 ISI:000238148200003 ark:/85065/d7bk1cwp |
op_rights |
Copyright 2006 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 of the U.S. Copyright Act or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statement, requires written permission or a license form the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at (http://www.ametsoc.org/AMS) or from the AMS at 617-227-2425 or copyright@ametsoc.org. |
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1772809808112517120 |