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Showing results for tags 'ice ages'.
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Microfossils, Southern Ocean, Earth’s obliquity, and Ice Age cycles
Oxytropidoceras posted a topic in Fossil News
What caused the ice ages? Tiny ocean fossils offer key evidence Liz Fuller-Wright, Office of Communications,Dec. 10, 2020 https://www.princeton.edu/news/2020/12/10/what-caused-ice-ages-tiny-ocean-fossils-offer-key-evidence The paper is; Ai, X.E., Studer, A.S., Sigman, D.M., Martínez-García, A., Fripiat, F., Thöle, L.M., Michel, E., Gottschalk, J., Arnold, L., Moretti, S. and Schmitt, M., 2020. Southern Ocean upwelling, Earth’s obliquity, and glacial-interglacial atmospheric CO2 change. Science, 370(6522), pp.1348-1352. Yours, Paul H.-
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Ancient farmers spared us from glaciers but profoundly changed Earth's climate University of Wisconsin-Madison, September 6, 2018 https://www.sciencedaily.com/releases/2018/09/180906141507.htm If You Hate Ice Ages, Thank a Farmer Chopping down forests and irrigating rice paddies boosted greenhouse gases enough to prevent the onset of a new ice age Ronald Bailey|Sep. 10, 2018 2:05 pm https://reason.com/blog/2018/09/10/thank-a-farmer-if-you-hate-ice-ages The papers are: Vavrus, S.J., He, F., Kutzbach, J.E., Ruddiman, W.F. and Tzedakis, P.C., 2018. Glacial Inception in Marine Isotope Stage 19: An Orbital Analog for a Natural Holocene Climate. Scientific reports, 8(1), no.10213. (open access paper) https://www.nature.com/articles/s41598-018-28419-5 http://discovery.ucl.ac.uk/10053186/1/Vavrus_Glacial.pdf Ruddiman, W.F., 2003. The anthropogenic greenhouse era began thousands of years ago. Climatic change, 61(3), pp.261-293. http://users.clas.ufl.edu/rrusso/gly6932/ruddiman_03.pdf http://www.whoi.edu/cms/files/ruddiman03cc_68543.pdf Yours, Paul H.