JP1.11
Analysis of sub-seasonal rainfall characteristics from a nested modeling system for South America
Anji Seth, International Research Insititute for Climate Prediction, Palisades, NY; and M. Rojas
Seasonal rainfall prediction, while useful for some planning, does not have the temporal resolution needed for many applications. Information regarding sub-seasonal variations in rainfall are often needed for sectors such as water management and agriculture. In this light, daily rainfall data from seasonal integrations with a nested modeling system for South America are examined and evaluated against observations. The two extreme seasons of 1983 (dry) and 1985 (wet) are simulated using a regional climate model model (RegCM2) driven by reanalyses and also by general circulation model (GCM) ensemble realizations. Daily rainfall from station observations is used to define spatial (% days having rainfall) and temporal characteristics (daily time series, frequency distributions) of rainfall and to verify the model’s ability to capture these characteristics.
Joint Poster Session 1, Applications of Seasonal Predictions (Joint with 15th Symposium on Global Change and Climate Variations and 14th Conference on Applied Climatology; Hall 4AB)
Monday, 12 January 2004, 2:30 PM-4:00 PM, Hall 4AB
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