Simulation of the Global Hydrological Cycle in the CCSM Community Atmosphere Model (CAM3): Mean features
The seasonal and annual climatological behavior of selected components of the hydrological cycle are presented from coupled and uncoupled configurations of the atmospheric component of the Community Climate System Model (CCSM) Community Atmosphere Model version 3 (CAM3). The formulations of processe...
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ftncar:oai:drupal-site.org:articles_17588 2023-09-05T13:23:06+02:00 Simulation of the Global Hydrological Cycle in the CCSM Community Atmosphere Model (CAM3): Mean features Hack, James (author) Caron, Julie (author) Yeager, Stephen (author) Oleson, Keith (author) Holland, Marika (author) Truesdale, John (author) Rasch, Philippe (author) 2006-06 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-019-324 en eng Journal of Climate http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-019-324 ark:/85065/d7vt1tdv 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 ยง108, 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 2023-08-14T18:44:18Z The seasonal and annual climatological behavior of selected components of the hydrological cycle are presented from coupled and uncoupled configurations of the atmospheric component of the Community Climate System Model (CCSM) Community Atmosphere Model version 3 (CAM3). The formulations of processes that play a role in the hydrological cycle are significantly more complex when compared with earlier versions of the atmospheric model. Major features of the simulated hydrological cycle are compared against available observational data, and the strengths and weaknesses are discussed in the context of specified sea surface temperature and fully coupled model simulations. The magnitude of the CAM3 hydrological cycle is weaker than in earlier versions of the model, and is more consistent with observational estimates. Major features of the exchange of water with the surface, and the vertically integrated storage of water in the atmosphere, are generally well captured on seasonal and longer time scales. The water cycle response to ENSO events is also very realistic. The simulation, however, continues to exhibit a number of long-standing biases, such as a tendency to produce double ITCZ-like structures in the deep Tropics, and to overestimate precipitation rates poleward of the extratropical storm tracks. The lower-tropospheric dry bias, associated with the parameterized treatment of convection, also remains a simulation deficiency. Several of these biases are exacerbated when the atmosphere is coupled to fully interactive surface models, although the larger-scale behavior of the hydrological cycle remains nearly identical to simulations with prescribed distributions of sea surface temperature and sea ice. National Science Foundation (NSF): OPP-0242290 Article in Journal/Newspaper 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 |
The seasonal and annual climatological behavior of selected components of the hydrological cycle are presented from coupled and uncoupled configurations of the atmospheric component of the Community Climate System Model (CCSM) Community Atmosphere Model version 3 (CAM3). The formulations of processes that play a role in the hydrological cycle are significantly more complex when compared with earlier versions of the atmospheric model. Major features of the simulated hydrological cycle are compared against available observational data, and the strengths and weaknesses are discussed in the context of specified sea surface temperature and fully coupled model simulations. The magnitude of the CAM3 hydrological cycle is weaker than in earlier versions of the model, and is more consistent with observational estimates. Major features of the exchange of water with the surface, and the vertically integrated storage of water in the atmosphere, are generally well captured on seasonal and longer time scales. The water cycle response to ENSO events is also very realistic. The simulation, however, continues to exhibit a number of long-standing biases, such as a tendency to produce double ITCZ-like structures in the deep Tropics, and to overestimate precipitation rates poleward of the extratropical storm tracks. The lower-tropospheric dry bias, associated with the parameterized treatment of convection, also remains a simulation deficiency. Several of these biases are exacerbated when the atmosphere is coupled to fully interactive surface models, although the larger-scale behavior of the hydrological cycle remains nearly identical to simulations with prescribed distributions of sea surface temperature and sea ice. National Science Foundation (NSF): OPP-0242290 |
author2 |
Hack, James (author) Caron, Julie (author) Yeager, Stephen (author) Oleson, Keith (author) Holland, Marika (author) Truesdale, John (author) Rasch, Philippe (author) |
format |
Article in Journal/Newspaper |
title |
Simulation of the Global Hydrological Cycle in the CCSM Community Atmosphere Model (CAM3): Mean features |
spellingShingle |
Simulation of the Global Hydrological Cycle in the CCSM Community Atmosphere Model (CAM3): Mean features |
title_short |
Simulation of the Global Hydrological Cycle in the CCSM Community Atmosphere Model (CAM3): Mean features |
title_full |
Simulation of the Global Hydrological Cycle in the CCSM Community Atmosphere Model (CAM3): Mean features |
title_fullStr |
Simulation of the Global Hydrological Cycle in the CCSM Community Atmosphere Model (CAM3): Mean features |
title_full_unstemmed |
Simulation of the Global Hydrological Cycle in the CCSM Community Atmosphere Model (CAM3): Mean features |
title_sort |
simulation of the global hydrological cycle in the ccsm community atmosphere model (cam3): mean features |
publishDate |
2006 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-019-324 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
Journal of Climate http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-019-324 ark:/85065/d7vt1tdv |
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 ยง108, 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. |
_version_ |
1776203676818341888 |