This is a good tutorial on how to morph future weather data from current weather data for building performance simulation. The Ecotect Weather Tool is then used to compare and visualize the data. The future weather data will be morphed from an existing Energy Plus weather file using CCWorldWeatherGen, an Excel based Climate Change Weather File Generator. It uses Intergovernmental Panel on Climate Change (IPCC) Third Assessment Report model summary data of the HadCM3 A2 experiment ensemble which is available from the IPCC Data Distribution Centre (IPCC DDC). Via Serial NonStandard, thanks Jason for this tutorial ..