Grant: $315,789 - National Science Foundation - Jul. 23, 2009
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Award Description: A major goal of the 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 occurred in the relatively recent past, and they can be compared with the output of climate models to gain an understanding of the nonlinear processes involved in 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 took place subsequently during the lat Holocene. The first-order, millennial-scale cooling trend that followed the HTM coincides with the decrease in Northern Hemisphere summer insolation driven by slow changes in Earth’s orbit. Despite the nearly linear forcing, however, the transition from the HTM to the Little Ice Age (1500-1900 AD) was neither gradual nor uniform. To understand the feedback processes that result in rapid changes in system state, 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 climate change during these transitions.
Project Description: Project not started yet.
Jobs Summary: N/A (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.