Premium
An attempt at improving a global spectral model by incorporating the second law of thermodynamics
Author(s) -
Liu Chongjian,
Liu Ying
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2004gl021602
Subject(s) - second law of thermodynamics , laws of thermodynamics , statistical physics , first law of thermodynamics , degrees of freedom (physics and chemistry) , physics , atmosphere (unit) , thermodynamics , non equilibrium thermodynamics , law , political science
A fluid such as the atmosphere is a many‐body system that has a vast amount of degrees of freedom in terms of statistical physics and thus obeys the second law of thermodynamics controlling the irreversible evolutionary direction of a many‐body system. This study shows that incorporating the thermodynamic irreversibility law into a hydrodynamic system leads to a noticeable improvement of a numerical weather prediction model. This is demonstrated by improved simulations from a set of numerical experiments using a global spectral model which incorporates the second law.