Journal cover Journal topic
Earth System Dynamics An interactive open-access journal of the European Geosciences Union

Journal metrics

  • IF value: 3.635 IF 3.635
  • IF 5-year<br/> value: 3.869 IF 5-year
    3.869
  • CiteScore<br/> value: 4.15 CiteScore
    4.15
  • SNIP value: 0.995 SNIP 0.995
  • SJR value: 2.742 SJR 2.742
  • IPP value: 3.679 IPP 3.679
  • h5-index value: 21 h5-index 21
https://doi.org/10.5194/esdd-6-407-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
02 Mar 2015
Review status
This discussion paper has been under review for the journal Earth System Dynamics (ESD). The revised manuscript was not accepted.
Inferring global wind energetics from a simple Earth system model based on the principle of maximum entropy production
S. Karkar1,* and D. Paillard1 1Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Orme des Merisiers, Bât. 701, 91191 Gif-sur-Yvette CEDEX, France
*now at: LEMA-EPFL, Station 11, 1015 Lausanne, Switzerland
Abstract. The question of total available wind power in the atmosphere is highly debated, as well as the effect large scale wind farms would have on the climate. Bottom-up approaches, such as those proposed by wind turbine engineers often lead to non-physical results (non-conservation of energy, mostly), while top-down approaches have proven to give physically consistent results. This paper proposes an original method for the calculation of mean annual wind energetics in the atmosphere, without resorting to heavy numerical integration of the entire dynamics. The proposed method is derived from a model based on the Maximum of Entropy Production (MEP) principle, which has proven to efficiently describe the annual mean temperature and energy fluxes, despite its simplicity. Because the atmosphere is represented with only one vertical layer and there is no vertical wind component, the model fails to represent the general circulation patterns such as cells or trade winds. However, interestingly, global energetic diagnostics are well captured by the mere combination of a simple MEP model and a flux inversion method.

Citation: Karkar, S. and Paillard, D.: Inferring global wind energetics from a simple Earth system model based on the principle of maximum entropy production, Earth Syst. Dynam. Discuss., 6, 407-433, https://doi.org/10.5194/esdd-6-407-2015, 2015.
S. Karkar and D. Paillard
S. Karkar and D. Paillard

Viewed

Total article views: 577 (including HTML, PDF, and XML)

HTML PDF XML Total BibTeX EndNote
417 118 42 577 13 34

Views and downloads (calculated since 02 Mar 2015)

Cumulative views and downloads (calculated since 02 Mar 2015)

Saved

Discussed

Latest update: 16 Aug 2017
Publications Copernicus
Download
Short summary
This paper proposes a method to infer global wind energetics of the atmosphere. It uses the energy fluxes obtained with a climate box-model previously proposed by Herbert et al., based on the maximization of entropy production (MEP) principle, to compute annual mean winds. Specific details of the circulation are not recovered, as the atmosphere is represented with only one layer, but global figures are well captured.
This paper proposes a method to infer global wind energetics of the atmosphere. It uses the...
Share