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- Global Average Annual Sum Precipitation (mm) for CSIRO Mk3.0 SRES A2 at a ½ Degree Grid Resolution, 2070-2099
Global Average Annual Sum Precipitation (mm) for CSIRO Mk3.0 SRES A2 at a ½ Degree Grid Resolution, 2070-2099
Mar 1, 2011
Uploaded by
Conservation Biology Institute
- Description:
- For each CSIRO Mk3.0 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 CSIRO Mk3.0 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 CSIRO Mk3.0 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). Result is monthly precipitation data for the years 2001-2100 at the ½ degree grid.
An average of the years 2070-2099 was produced. Result is a single map of the average sum annual precipitation values
- Data Provided By:
- Mean historical precipitation were derived from Climatic Research Unit TS 2.0 half degree grids (website: http://www.cru.uea.ac.uk ). Future precipitation anomalies were calculated from simulated historical and projected future precipitation produced by the CSIRO Mk3.0 model running on historical and SRES A2 CO2 levels. Downscaling was done by Raymond Drapek, PNW Research Station, USDA Forest Service.
- Content date:
- Original dataset covers the years 2001-2100. This particular map is the average for the years 2070-2099.
- Citation:
- There is no citation for the downscaled data as of 2/4/11, but a Forest Service General Technical Report is in progress. Citation for the CRU data: Mitchell, T.D., Carter, T.R., Jones, P.D., Hulme,M., New, M., 2003: A comprehensive set of high-resolution grids of monthly climate for Europe and the globe: the observed record (1901-2000) and 16 scenarios (2001-2100). Journal of Climate: submitted. CSIRO Mk3.0 data were picked up from the WCRP CMIP3 multi-model database website (https://esg.llnl.gov:8443/home/publicHomePage.do ).
- Spatial Resolution:
- 0.5 degree
- Contact Organization:
- MAPSS Team, Ron Neilson lead, USDA Forest Service. Corvallis, OR
- Contact Person(s):
- Use Constraints:
- Acknowledgment of the following in products derived from these data: Dr. T.C. Mitchell, CRU TS 2.0; CSIRO Mk3.0; Dr. Ron Neilson, PNW Research Station, USDA Forest Service
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Conservation Biology Institute
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