The National Center for Atmospheric Research Community Climate Model: CCM3Source: Journal of Climate:;1998:;volume( 011 ):;issue: 006::page 1131Author:Kiehl, J. T.
,
Hack, J. J.
,
Bonan, G. B.
,
Boville, B. A.
,
Williamson, D. L.
,
Rasch, P. J.
DOI: 10.1175/1520-0442(1998)011<1131:TNCFAR>2.0.CO;2Publisher: American Meteorological Society
Abstract: The latest version of the National Center for Atmospheric Research (NCAR) Community Climate Model (CCM3) is described. The changes in both physical and dynamical formulation from CCM2 to CCM3 are presented. The major differences in CCM3 compared to CCM2 include changes to the parameterization of cloud properties, clear sky longwave radiation, deep convection, boundary layer processes, and land surface processes. A brief description of each of these parameterization changes is provided. These modifications to model physics have led to dramatic improvements in the simulated climate of the CCM. In particular, the top of atmosphere cloud radiative forcing is now in good agreement with observations, the Northern Hemisphere winter dynamical simulation has significantly improved, biases in surface land temperatures and precipitation have been substantially reduced, and the implied ocean heat transport is in very good agreement with recent observational estimates. The improvement in implied ocean heat transport is among the more important attributes of the CCM3 since it is used as the atmospheric component of the NCAR Climate System Model. Future improvements to the CCM3 are also discussed.
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contributor author | Kiehl, J. T. | |
contributor author | Hack, J. J. | |
contributor author | Bonan, G. B. | |
contributor author | Boville, B. A. | |
contributor author | Williamson, D. L. | |
contributor author | Rasch, P. J. | |
date accessioned | 2017-06-09T15:39:13Z | |
date available | 2017-06-09T15:39:13Z | |
date copyright | 1998/06/01 | |
date issued | 1998 | |
identifier issn | 0894-8755 | |
identifier other | ams-4978.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4189266 | |
description abstract | The latest version of the National Center for Atmospheric Research (NCAR) Community Climate Model (CCM3) is described. The changes in both physical and dynamical formulation from CCM2 to CCM3 are presented. The major differences in CCM3 compared to CCM2 include changes to the parameterization of cloud properties, clear sky longwave radiation, deep convection, boundary layer processes, and land surface processes. A brief description of each of these parameterization changes is provided. These modifications to model physics have led to dramatic improvements in the simulated climate of the CCM. In particular, the top of atmosphere cloud radiative forcing is now in good agreement with observations, the Northern Hemisphere winter dynamical simulation has significantly improved, biases in surface land temperatures and precipitation have been substantially reduced, and the implied ocean heat transport is in very good agreement with recent observational estimates. The improvement in implied ocean heat transport is among the more important attributes of the CCM3 since it is used as the atmospheric component of the NCAR Climate System Model. Future improvements to the CCM3 are also discussed. | |
publisher | American Meteorological Society | |
title | The National Center for Atmospheric Research Community Climate Model: CCM3 | |
type | Journal Paper | |
journal volume | 11 | |
journal issue | 6 | |
journal title | Journal of Climate | |
identifier doi | 10.1175/1520-0442(1998)011<1131:TNCFAR>2.0.CO;2 | |
journal fristpage | 1131 | |
journal lastpage | 1149 | |
tree | Journal of Climate:;1998:;volume( 011 ):;issue: 006 | |
contenttype | Fulltext |