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P2C2: Flickering Climate: Assessment of the Non-Stationary Environment in the Great Lakes Area, 14 ka to 8 ka BP- A Time of Rising Human Population and Mega-Fauna Extinction

This research project tests the hypothesis that past abrupt changes like the Younger Dryas cold event, the Older Dryas cold period, Intra-Aller??d cold period, and the 8.2 ka cooling event, as well as future abrupt changes related to human alteration of the atmosphere, may be immediately preceded by "variance amplification" that drives the system to tipping points that usher in the new steady-state climate conditions. The researchers aim to test for such variance amplification during deglaciation using tree-rings from the Great Lakes region as high-resolution climate proxies.<br/><br/>The Great Lakes region is targeted by the researchers for investigating variance amplification because it is close enough to the North Atlantic to be strongly teleconnected to climate events spawned there and events in the Great Lake region itself may have triggered some of these hemisphere-wide climate excursions.<br/><br/>The primary broader impacts involve supporting undergraduate students in the project and creating a summer short course in dendroclimatology and related sciences.

Status
In progress
Type
Project
Project URL
http://www.research.gov/research-portal/appmanager/base/desktop
Project Database
Start Date
End Date

The Great Lakes - St. Lawrence Research Inventory is an
interactive, Internet-based, searchable database created as a tool to collect and disseminate
up-to-date information about research projects in the
Great Lakes - St. Lawrence Region.