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The database details the most comprehensive collection of information on global temperature change over the past one to two thousand years and gathers information on past temperature based on evidence from a number of distinct sources including tree-ring measurements, glacier ice, speleothems, corals, sediments from lake and ocean bottoms, and historical documents.

Access the Scientific Data paper here and press release here.

Access PAGES' "Additional information" webpage, including FAQs, blog articles, images and other press releases, here.