Publication Abstracts

Geller et al. 2011

Geller, M.A., T. Zhou, R. Ruedy, I. Aleinov, L. Nazarenko, N.L. Tausnev, S. Sun, M. Kelley, and Y. Cheng, 2011: New gravity wave treatments for GISS climate models. J. Climate, 24, 3989-4002, doi:10.1175/2011JCLI4013.1.

Previous versions of GISS climate models have either used formulations of Rayleigh drag to represent unresolved gravity wave interactions with the model resolved flow or have included a rather complicated treatment of unresolved gravity waves that, while being climate interactive, involved the specification of a relatively large number of parameters that were not well constrained by observations and also was computationally very expensive. Here, we introduce a relatively simple and computationally efficient specification of unresolved orographic and non-orographic gravity waves and their interaction with the resolved flow. We show comparisons of the GISS model winds and temperatures with no gravity wave parametrization; with only orographic gravity wave parameterization; and with both orographic and non-orographic gravity wave parameterizations to illustrate how the zonal mean winds and temperatures converge toward observations. We also show that the specifications of orographic and non-orographic gravity waves must be different in the Northern and Southern Hemispheres. We then show results where the non-orographic gravity wave sources are specified to represent sources from convection in the Intertropical Convergence Zone and spontaneous emission from jet imbalances. Finally, we suggest a strategy to include these effects in a climate dependent manner.

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BibTeX Citation

  author={Geller, M. A. and Zhou, T. and Ruedy, R. and Aleinov, I. and Nazarenko, L. and Tausnev, N. L. and Sun, S. and Kelley, M. and Cheng, Y.},
  title={New gravity wave treatments for GISS climate models},
  journal={Journal of Climate},

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RIS Citation

ID  - ge00100w
AU  - Geller, M. A.
AU  - Zhou, T.
AU  - Ruedy, R.
AU  - Aleinov, I.
AU  - Nazarenko, L.
AU  - Tausnev, N. L.
AU  - Sun, S.
AU  - Kelley, M.
AU  - Cheng, Y.
PY  - 2011
TI  - New gravity wave treatments for GISS climate models
JA  - J. Climate
JO  - Journal of Climate
VL  - 24
SP  - 3989
EP  - 4002
DO  - 10.1175/2011JCLI4013.1
ER  -

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