The climate science community sources a suite of global climate models to help decision makers understand the projections of future climate change and related impacts, among the most widely used are the Coupled Model Intercomparison Project, Phase 5 (CMIP5) models included in the IPCC's Fifth Assessment Report (AR5). Climate projections can be presented via individual models or through multi-model ensembles. The Climate Change Knowledge Portal (CCKP) supports the analysis of climate impacts using multi-model ensembles, as they represent the range and distribution of the most plausible projected outcomes when representing expected changes.
- Mean temperature is projected to increase by 1°C from 2050 to 3-3.5°C by 2100.
- Mean annual precipitation is projected by CMIP3 models to increase by 2046-2065 (middle century) and 2081-2100 under low (B1), medium (A1B), and high (A2) emissions scenarios. However, far southern Congo shows little change in precipitation in these projections.
- The Fifth Assessment Report from the Intergovernmental Panel on Climate Change projects mostly increases in annual average precipitation over western equatorial Africa under the RCP8.5 scenario for mid and late-21st century.
This section provides the options to visualize climate variables and indices derived from scientifically vetted CMIP5 projections for different timeframes, statistics, emission scenarios, and climate models.