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Unstable and damped modes in coupled ocean mixed layer and cloud models
Chu, P.C.; Garwood, R.W.; Muller, P. (1990). Unstable and damped modes in coupled ocean mixed layer and cloud models, in: Nihoul, J.C.J. (Ed.) Coupled ocean-atmosphere modeling: proceedings of the 21th International Liège Colloquium on Ocean Hydrodynamics, Liège, May 8-12, 1989. Journal of Marine Systems, 1(1-3): pp. 1-11
In: Nihoul, J.C.J. (Ed.) (1990). Coupled ocean-atmosphere modeling: proceedings of the 21th International Liège Colloquium on Ocean Hydrodynamics, Liège, May 8-12, 1989. Journal of Marine Systems, 1(1-3). Elsevier Scientific: Amsterdam. 313 pp., more
In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963, more
Peer reviewed article  

Available in  Authors 
Document type: Conference paper

Keyword
    Marine

Authors  Top 
  • Chu, P.C.
  • Garwood, R.W.
  • Muller, P.

Abstract
    The ocean mixed layer and clouds are coupled by the fluxes of momentum, heat, and water mass at the interface. 2 Time scales are demonstrated: a sea surface temperature (SST) evolution time scale, tau sub(T), that is virtually controlled by the oceanic planetary boundary layer (OPBL) and a cloud-SST coupling time scale, tau sub(n,T). These two time scales depend on the stability of the marine atmospheric boundary layer (MABL). An air-ocean coupled model is presented in this paper for two different regimes: (1) the non-entraining ocean mixed layer case and (2) the entraining mixed layer case. The model results demonstrate that the exchanges of heat and water across the sea surface lead to both growing and decaying modes of oscillation on the two time scales due to the stability of the atmosphere.

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