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Transcript
Climate Projections and Surprises Current Weather Abrupt Climate Changes Atlantic Meridional Overturning Circulation Other Examples Day After Tomorrow Exam 4 on May 1! Final Exam on May 8. http://www.washingtonpost.com/blogs/ca pital-weathergang/wp/2015/04/23/dynamite-timelapseviews-of-chiles-erupting-calbuco-volcano/ Abrupt Climate Changes Theory, models, and paleoclimatic reconstructions have shown that changes in the climate system can be abrupt and widespread. Abrupt climate change: “. . . occurs when the climate system is forced to cross some threshold, triggering a transition to a new state . . .” (Alley et al. 2002) “Climate surprises” often used to refer to these abrupt transitions Responses of a Climate Variable to Forcing Atlantic Meridional Overturning Circulation Best-documented type of abrupt climate change in paleoclimatic archives is associated with changes in oceanic circulation, especially in the North Atlantic Also referred to as “Thermohaline Circulation”. Colder, Saltier Water Sinks in North Atlantic, driving the Thermohaline Circulation http://www.whoi.edu/page.do?pid=83339 &tid=3622&cid=10046 Abrupt Climate Change Site from Woods Hole Oceanographic Institute http://www.whoi.edu/main/topic/abrupt-climate-change
