Це стара версія документу!
http://www.metoffice.gov.uk/hadobs/crutem4/data/download.html
http://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/tree-ring
http://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/climate-reconstruction
http://en.wikipedia.org/wiki/Temperature_record