Precipitation in 2050, under scenario SRES A2

Precipitation in 2050, under scenario SRES A2Click the image above for high-resolution view
Precipitation is projected to move further towards the extremes in the models for the IPCC 4th Assessment. Drier areas are becoming drier, while other areas are becoming wetter. This map presents the multi-model average prepared as CMIP3, and the result for the SRES A2 scenario for the middle of this century. This scenario is characterized by a divided world with an increasing population and slow mitigation against climate change.

Map prepared as discussion material for the Stockholm International Water Institute (SIWI). The map was designed to emphasize areas that are dry and becoming dryer, emphasizing annual precipitation of under 600 mm/year.

The map is presented in the Wagner VII projection.

ESRI ArcGIS and Adobe Illustrator were used to prepare the map, together with Global Mapper. The base map data was prepared from the Natural Earth database. The precipitation data was calculated from CMIP3 with CRU-TS 2.1 as the baseline.

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