Extremal climatic states simulated by a 2-dimensional model. Part I: Sensitivity of the model and present state

Toni Pujol, Josep Enric Llebot

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Abstract

The criterion, based on the thermodynamics theory, that the climatic system tends to extremize some function has suggested several studies. In particular, special attention has been devoted to the possibility that the climate reaches an extremal rate of planetary entropy production. Due to both radiative and material effects contribute to total planetary entropy production, climatic simulations obtained at the extremal rates of total, radiative or material entropy production appear to be of interest in order to elucidate which of the three extremal assumptions behaves more similar to current data. In the present paper, these results have been obtained by applying a 2-dimensional (2-Dim) horizontal energy balance box-model, with a few independent variables (surface temperature, cloud-cover and material heat fluxes). In addition, climatic simulations for current conditions by assuming a fixed cloud-cover have been obtained. Finally, sensitivity analyses for both variable and fixed cloud models have been carried out.
Original languageEnglish
Pages (from-to)422-439
JournalTellus, Series A: Dynamic Meteorology and Oceanography
Volume52
Issue number4
DOIs
Publication statusPublished - 1 Jan 2000

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