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Evaluating Extreme Precipitation in Gridded Datasets: A Case Study over California

Presentation Date
Thursday, December 14, 2017 at 8:00am
New Orleans Ernest N. Morial Convention Center - Poster Hall D-F



High-resolution gridded precipitation datasets provide a valuable, spatially-complete picture of historical precipitation. However, gridded data are often treated as “truth” without acknowledging the significant assumptions and simplifications need to turn point observations into a spatially-complete gridded product. Here extreme precipitation is evaluated in five frequently-used gridded precipitation datasets by comparing with Global Historical Climatology Network station data over California. Substantial differences are found among the datasets and can be traced back to differing assumptions about how precipitation varies in space.

Funding Program Area(s)