The Coupled Multi-scale Downscaling Climate System : a decision-making tool for developing countries

Florian Lemarié 1, * Marc Honnorat 2
* Corresponding author
2 MOISE - Modelling, Observations, Identification for Environmental Sciences
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
Abstract : The purpose of this paper is to introduce and evaluate a high-resolution (5km) atmospheric downscaling system. The NCEP-NCAR Reanalysis and the NCEP-DOE Reanalysis II are used to drive a 30 years multi-scale simulation. We report in this paper the different steps for the implementation of the downscaling strategy. Our system has been applied to the east coast of South America with a specific emphasis put on Uruguay. We validate the results by carrying out a direct comparison with the available historical in situ observations. We show that our simulation develops a good representation of the seasonal and interannual variability for temperature and winds in the surface layer. The methodology presented here provides a basis for generalizing this approach to future studies especially for regions with a very limited observational network. Moreover we are on the path to include more precise informations about the sea-state by adding a wave model in our downscaling system.
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Florian Lemarié, Marc Honnorat. The Coupled Multi-scale Downscaling Climate System : a decision-making tool for developing countries. OCEANS 2010, Sep 2010, Seattle, WA, United States. pp.1-9, ⟨10.1109/OCEANS.2010.5664389⟩. ⟨hal-00661973⟩

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