• Becker, E., 2001: Symmetric stress tensor formulation of horizontal momentum diffusion in global models of atmospheric circulation. J. Atmos. Sci., 58 , 269282.

    • Search Google Scholar
    • Export Citation
  • Boville, B. A., , and P. R. Gent, 1998: The NCAR Climate System Model, version one. J. Climate, 11 , 11151130.

  • Collins, W. D., 2001: Parameterization of generalized cloud overlap for radiative calculations in general circulation models. J. Atmos. Sci., 58 , 32243242.

    • Search Google Scholar
    • Export Citation
  • Collins, W. D., , J. K. Hackney, , and D. P. Edwards, 2002: An updated parameterization for infrared emission and absorption by water vapor in the National Center for Atmospheric Research Community Atmosphere Model. J. Geophys. Res., 107 .4664, doi:10.1029/2001J0001365.

    • Search Google Scholar
    • Export Citation
  • Fiedler, B. H., 2000: Dissipative heating in climate models. Quart. J. Roy. Meteor. Soc., 126 , 925939.

  • Gill, A. E., 1982: Atmosphere–Ocean Dynamics. Academic Press, 662 pp.

  • Holtslag, A. A. M., , and B. A. Boville, 1993: Local versus nonlocal boundary-layer diffusion in a global climate model. J. Climate, 6 , 18251842.

    • Search Google Scholar
    • Export Citation
  • Kiehl, J. T., , J. J. Hack, , G. B. Bonan, , B. A. Boville, , D. L. Williamson, , and P. J. Rasch, 1998: The National Center for Atmospheric Research Community Climate Model: CCM3. J. Climate, 11 , 11311149.

    • Search Google Scholar
    • Export Citation
  • Lin, S-J., , and R. B. Rood, 1997: An explicit flux-form semi-Lagrangian shallow-water on the sphere. Quart. J. Roy. Meteor. Soc., 123 , 24772498.

    • Search Google Scholar
    • Export Citation
  • Rasch, P. J., , and D. L. Williamson, 1990: Computational aspects of moisture transport in global models of the atmosphere. Quart. J. Roy. Meteor. Soc., 116 , 10711090.

    • Search Google Scholar
    • Export Citation
  • Rasch, P. J., , and J. E. Kristjánsson, 1998: A comparison of the CCM3 model climate using diagnosed and predicted condensate parameterizations. J. Climate, 11 , 15871614.

    • Search Google Scholar
    • Export Citation
  • Williamson, D. L., 1988: The effect of vertical finite difference approximations on simulations with the NCAR community climate model. J. Climate, 1 , 4058.

    • Search Google Scholar
    • Export Citation
  • Williamson, D. L., 2002: Time-split versus process-split coupling of parameterizations and dynamical core. Mon. Wea. Rev., 130 , 20242041.

    • Search Google Scholar
    • Export Citation
  • Williamson, D. L., , and J. G. Olson, 1994: Climate simulations with a semi-Lagrangian version of the NCAR Community Climate Model. Mon. Wea. Rev., 122 , 15941610.

    • Search Google Scholar
    • Export Citation
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Heating and Kinetic Energy Dissipation in the NCAR Community Atmosphere Model

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  • 1 National Center for Atmospheric Research,* Boulder, Colorado
  • | 2 Department of Atmospheric Sciences, University of Washington, Seattle, Washington
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Abstract

Conservation of energy and the incorporation of parameterized heating in an atmospheric model are discussed. Energy conservation is used to unify the treatment of heating and kinetic energy dissipation within the Community Atmosphere Model, version 2 (CAM2). Dry static energy is predicted within the individual physical parameterizations and updated following each parameterization. Hydrostatic balance leads to an efficient method for determining the temperature and geopotential from the updated dry static energy. A consistent formulation for the heating due to kinetic energy dissipation associated with the vertical diffusion of momentum is also derived. Both continuous and discrete forms are presented. Tests of the new formulation verify that the impact on the simulated climate is very small.

Corresponding author address: Dr. Byron Boville, NCAR, P. O. Box 3000, Boulder, CO 80307-3000. Email: boville@ucar.edu

Abstract

Conservation of energy and the incorporation of parameterized heating in an atmospheric model are discussed. Energy conservation is used to unify the treatment of heating and kinetic energy dissipation within the Community Atmosphere Model, version 2 (CAM2). Dry static energy is predicted within the individual physical parameterizations and updated following each parameterization. Hydrostatic balance leads to an efficient method for determining the temperature and geopotential from the updated dry static energy. A consistent formulation for the heating due to kinetic energy dissipation associated with the vertical diffusion of momentum is also derived. Both continuous and discrete forms are presented. Tests of the new formulation verify that the impact on the simulated climate is very small.

Corresponding author address: Dr. Byron Boville, NCAR, P. O. Box 3000, Boulder, CO 80307-3000. Email: boville@ucar.edu

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