Amazon Basin Precipitation Results (15S – 5N; 75W – 50W) Improving representation of topography improves OLAM's precipitation estimates OLAM 200 km OLAM 100 km OLAM 25 km El Nino year Higher resolution gives correct ENSO behavior Coarse GCMs do not capture the minimum during El Nino years (Medvigy et al., 2009, GRL)
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