Entropy 2009, 11(3), 360-383; doi:10.3390/e11030360
Review

Entropic Forces in Geophysical Fluid Dynamics

email
Received: 2 June 2009; Accepted: 1 August 2009 / Published: 7 August 2009
(This article belongs to the Special Issue Concepts of Entropy)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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
PDF Full-text Download PDF Full-Text [846 KB, uploaded 7 August 2009 00:19 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

Holloway, G. Entropic Forces in Geophysical Fluid Dynamics. Entropy 2009, 11, 360-383.

AMA Style

Holloway G. Entropic Forces in Geophysical Fluid Dynamics. Entropy. 2009; 11(3):360-383.

Chicago/Turabian Style

Holloway, Greg. 2009. "Entropic Forces in Geophysical Fluid Dynamics." Entropy 11, no. 3: 360-383.

Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert