The INMCM3.0 climate model has formed the basis for the development of a new climate-model version: the INMCM4.0. It differs from the previous version in that there is an increase in its spatial resolution and some changes in the formulation of coupled atmosphere-ocean general circulation models. A numerical experiment was conducted on the basis of this new version to simulate the present-day climate. The model data were compared with observational data and the INMCM3.0 model data. It is shown that the new model adequately reproduces the most significant features of the observed atmospheric and oceanic climate.

climate modelINMCM4.0climatic simulation



Initial contribute: 2020-06-28


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Application-focused categoriesIntegrated-perspectiveGlobal scale

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This climate model consists of two basic blocks: models of the atmospheric and oceanic general circulations. In the atmospheric model, the hydrothermo-dynamic three dimensional equations are solved using the finite difference method in the hydrostatics approximation . In the finite difference scheme, the law of conservation of moisture mass and momentum is observed. The spatial resolution of theINMCM3.0 atmospheric module is 5° × 4° in longitude and latitude. In the INMCM4.0 model, the spatial resolution is improved. In both versions of the atmospheric model, the domain is vertically divided into 21 sigma levels. The time step has reduced from 12 to 5 minutes. The parameterizations of the basic physical processes in the model have changed only slightly; namely, some of the tuning parameters have changed. Among these are the parameterizations of radiation, strong and slight convections, orographic and nonorographic gravity wave resistances, and processes occurring in soil and vegetation



Institute of Numerical Mathematics, Russian Academy of Sciences (2020). INMCM4.0, Model Item, OpenGMS,


Initial contribute : 2020-06-28



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