CAIT -- The Climate Analysis Indicator tool web page provides tools and data with respect to various variables that impact climate change. The page is available at http://www.ccap.org/docs/resources/234/Baumert_CAIT-Nov04.pdf.
Cline--A summary of William Cline's 2007 book "Global Warming and Agriculture: Impact Estimates by Country" is available at https://www.imf.org/external/pubs/ft/fandd/2008/03/pdf/cline.pdf /p>
World Bank, Climate Change Knowledge Portal-- This page provides a central location for reports and data on world climate change. The site is available at http://sdwebx.worldbank.org/climateportal/index.cfm .
US National Weather Service -- This page contains links to shapefiles and raster files for weather data for both the United States and other parts of the world. Definitions for the shapefile codes can be found in a text file as part of the shapefile package. The site is available at http://www.cpc.ncep.noaa.gov/products/GIS/GIS_DATA/