Figure SPM-7. (WGI) Projected Patterns of Precipitation Changes

Relative changes in precipitation (in percent) for the period 2090–2099, relative to 1980–1999. Values are multi-model averages based on the SRES A1B scenario for December to February (left) and June to August (right). White areas are where less than 66% of the models agree in the sign of the change and stippled areas are where more than 90% of the models agree in the sign of the change.

Source: IPCC Climate Change 2007:  The Physical Science Basis, Summary for Policymakers (2007), p16