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Global Average Annual Sum Precipitation (mm) for HADCM3 SRES A1B at a ½ Degree Grid Resolution, 2070-2099


Original Data Basin Creation Date
2011-02-28 07:46:43
Original Data Basin Modified Date
2011-02-28 08:23:02


For each HADCM3 gridcell: An average precipitation was calculated for 1961-1990 based on the simulated transient historical data. Result is a 12 month simulated climatology at the scale of the HADCM3 grid. For each forecast month a ratio anomaly was calculated (ex. January_2021 / Mean_historical_January). Anomalies were capped at 5.0. Result is a 100 year monthly set of precipitation anomalies at the scale of the HADCM3 grid. For each forecast month: Gridded anomalies were interpolated to a ½ degree grid using a bilinear interpolation. For each forecast month and each ½ degree gridcell: The anomaly for that month is mulitplied to the CRU historical precipitation (ex. CRU_Mean_January_1961-1990 x January_2021_anomaly). [...]


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Data source
Mean historical precipitation were derived from Climatic Research Unit TS 2.0 half degree grids (website:&nbsp;<a href=""></a> ). Future precipitation anomalies were calculated from simulated historical and projected future precipitation produced by the HADCM3 model running on historical and SRES A1B CO2 levels. Downscaling was done by Raymond Drapek, PNW Research Station, USDA Forest Service.
Harvested on Fri May 23 09:39:43 MDT 2014 from Data Basin Service

Additional Information


Type Scheme Key
UniqueKey Data Basin 209571ef217d4d10a4bf43262c8e144a

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