Grant: $136,780 - National Science Foundation - Jul. 23, 2009
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Award Description: A major goal of the Arctic System Science (ARCSS) Program is to understand the variability of the Arctic system and the feedbacks that lead to pronounced system changes, such as those that are currently taking place. Rapid changes in the Arctic climate system that occurred in the relatively recent past can be compared with the output of climate models to improve the understanding of the processess responsible for nonlinear system change. In particular, this study focuses on the transition between the Holocene thermal maximum (HTM) and the onset of Neoglaciation, and on the step-like changes that occurred subsequently during the late Holocene. The millennial-scale cooling trend that followed the HTM coincides with the decrease in Northern Hemisphere summer isolation driven by slow changes in Earth's orbit. Despite the nearly linear forcing, the transition from the HTM to the Little Ice Age (1500-1900 AD) was neither gradual nor uniform. To understand how feedbacks and perturbations result in rapid changes, a geographically distributed network of proxy climate records is proposed to study the spatial and temporal patterns of change, and to quantify the magnitude of change during these transitions.
Project Description: As this award has a start date of January 1, 2010 - no activities have been completed at this time.
Jobs Summary: None yet (Total jobs reported: 0)
Project Status: Not Started
This award's data was last updated on Jul. 23, 2009. Help expand these official descriptions using the wiki below.