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Special Issue "Concepts of Entropy"

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A special issue of Entropy (ISSN 1099-4300).

Deadline for manuscript submissions: closed (31 May 2009)

Keywords

  • concepts of entropy

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Review

Open AccessReview Entropic Forces in Geophysical Fluid Dynamics
Entropy 2009, 11(3), 360-383; doi:10.3390/e11030360
Received: 2 June 2009 / Accepted: 1 August 2009 / Published: 7 August 2009
Cited by 7 | PDF Full-text (846 KB) | HTML Full-text | XML Full-text
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 [...] Read more.
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. Full article
(This article belongs to the Special Issue Concepts of Entropy)

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