RealClimate: Since we have been periodically posting updates since 2009 of climate model output comparisons to observations across a range of variables, we have now set up this page as a permanent placeholder for the most up-to-date comparisons. We include surface temperature projections from 1981, 1988, CMIP3, CMIP5, and CMIP6*, and MSU/AMSU satellite products from CMIP5