James D. Hays is a professor of Earth and environmental sciences at Columbia University's Lamont–Doherty Earth Observatory.[1] Hays founded and led the CLIMAP project, which collected sea floor sediment data to study surface sea temperatures and paleoclimatological conditions 18,000 years ago.[2]
Hays is best known as a co-author of the 1976 paper in Science,[3] "Variations in the Earth's orbit: Pacemaker of the ice ages." Using ocean sediment cores, the Science paper verified the theories of Milutin Milanković that oscillations in climate can be correlated with Earth's orbital variations of eccentricity, axial tilt, and precession around the Sun (see Milankovitch cycles).
He graduated from Columbia University with a Ph.D. in 1964, Ohio State University with a Master of Science in 1960 and Harvard University with a Bachelor of Arts in 1956.[4] He became a recipient of the Milutin Milankovic Medal in 2010.[5]
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References edit
- ^ "Columbia SIPA - - School of International and Public Affairs". www.sipa.columbia.edu. Retrieved 2008-04-19.
- ^ Hirst, K. Kris. "What is the Culture-Historical Approach and Why Was it a Bad Idea?". about.com. Archived from the original on 2005-09-22. Retrieved 2008-04-19.
- ^ Hays, J. D.; Imbrie, J.; Shackleton, N. J. (1976). "Variations in the Earth's Orbit: Pacemaker of the Ice Ages". Science. 194 (4270): 1121–1132. Bibcode:1976Sci...194.1121H. doi:10.1126/science.194.4270.1121. PMID 17790893. S2CID 667291.
- ^ "James D. Hays - Earth and Environmental Sciences". eesc.columbia.edu.
- ^ "EGU - Awards & medals - Milutin Milankovic Medal". European Geosciences Union. Retrieved 18 May 2018.