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Entropic Forces in Geophysical Fluid Dynamics
Department of Fisheries and Oceans, Institute of Ocean Sciences, Sidney, B.C., Canada
Received: 2 June 2009; Accepted: 1 August 2009 / Published: 7 August 2009
Abstract: Theories and numerical models of atmospheres and oceans are based on classical mechanics with added parameterizations to represent subgrid variability. Reformulated in terms of derivatives of information entropy with respect to large scale configurations, we find systematic forces very different from those usually assumed. Two examples are given. We see that entropic forcing by ocean eddies systematically drives, rather than retards, large scale circulation. Additionally we find that small scale turbulence systematically drives up gradient (“un-mixing”) fluxes. Such results confront usual understanding and modeling practice.
Keywords: turbulence; waves; ocean circulation; mixing; subgrid modeling
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Holloway, G. Entropic Forces in Geophysical Fluid Dynamics. Entropy 2009, 11, 360-383.
Holloway G. Entropic Forces in Geophysical Fluid Dynamics. Entropy. 2009; 11(3):360-383.
Holloway, Greg. 2009. "Entropic Forces in Geophysical Fluid Dynamics." Entropy 11, no. 3: 360-383.