Source is http://pubs.giss.nasa.gov/docs/2003/2003_Hansen.pdf archive copy at the Wayback Machine. This image is a copy of the picture. Link found on http://pubs.giss.nasa.gov/authors/jhansen.htmlGISS^{[død lenke]}. Website Curator: Robert B. Schmunk. Responsible NASA Official: James E. Hansen. Page updated: 2007-05-09

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