Reanalysis-driven climate simulation over CORDEX North America domain using the Canadian Regional Climate Model, version 5: model performance evaluationReport as inadecuate




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Climate Dynamics

, Volume 41, Issue 11–12, pp 2973–3005

First Online: 07 May 2013Received: 30 July 2012Accepted: 18 April 2013

Abstract

The performance of reanalysis-driven Canadian Regional Climate Model, version 5 CRCM5 in reproducing the present climate over the North American COordinated Regional climate Downscaling EXperiment domain for the 1989–2008 period has been assessed in comparison with several observation-based datasets. The model reproduces satisfactorily the near-surface temperature and precipitation characteristics over most part of North America. Coastal and mountainous zones remain problematic: a cold bias 2–6 °C prevails over Rocky Mountains in summertime and all year-round over Mexico; winter precipitation in mountainous coastal regions is overestimated. The precipitation patterns related to the North American Monsoon are well reproduced, except on its northern limit. The spatial and temporal structure of the Great Plains Low-Level Jet is well reproduced by the model; however, the night-time precipitation maximum in the jet area is underestimated. The performance of CRCM5 was assessed against earlier CRCM versions and other RCMs. CRCM5 is shown to have been substantially improved compared to CRCM3 and CRCM4 in terms of seasonal mean statistics, and to be comparable to other modern RCMs.

KeywordsCRCM5 CORDEX Regional climate modelling North American Monsoon Great Plains Low-Level Jet Precipitation cycle Dynamical downscaling  Download fulltext PDF



Author: A. Martynov - R. Laprise - L. Sushama - K. Winger - L. Šeparović - B. Dugas

Source: https://link.springer.com/







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