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Roads et al. 2003
Roads, J., Chen, S., Cocke, S., Druyan, L., Fulakeza, M., LaRow, T., Lonergan, P., Qian, J.-H. and Zebiak, S. (2003). International Research Institute/Applied Research Centers (IRI/ARCs) regional model intercomparison over South America. Journal of Geophysical Research 108: doi: 10.1029/2002JD003201. issn: 0148-0227.

A regional modeling intercomparison project for South America among the (1) Scripps Experimental Climate Prediction Center regional spectral model (RSM), (2) Florida State University nested regional spectral model (FSUNRSM), (3) Goddard Institute for Space Studies regional climate model (RCM), and (4) IRI regional climate model (RegCM2) is described herein. All regional models were driven by the NCEP/NCAR I global reanalysis over a South American domain centered on Brazil. In comparison to new Xie and Arkin 0.5¿ land observations, the regional models had a seasonal systematic precipitation error that was somewhat similar to the driving NCEP/NCAR reanalysis systematic error, although the regional model ensemble mean error was somewhat smaller, indicating a potential value for using multiple model ensembles. However, correlations, threat scores and biases were not noticeably better. In short, at their current levels of skill, regional models do not yet provide a noticable improvement over large-scale analyses.

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Abstract

Keywords
Meteorology and Atmospheric Dynamics, Climatology, Meteorology and Atmospheric Dynamics, Numerical modeling and data assimilation, Meteorology and Atmospheric Dynamics, General circulation
Journal
Journal of Geophysical Research
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Publisher
American Geophysical Union
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