The National Science Foundation (NSF) awarded a $546,989 Project Grant to The Trustees of Columbia University in the City of New York, operating through its Sponsored Projects Administration Division, under the Geosciences (CFDA 47.050) program. The grant supports collaborative research to understand the non-linear and feedback mechanisms in the atmospheric circulation response to increased carbon dioxide (CO2) levels. The research aims to address the limited understanding of how warming-induced changes in atmospheric circulation patterns will impact regional climate, which is critical for informing climate change mitigation and adaptation efforts. The project involves analyzing climate model simulations to investigate the reasons for inter-model differences in circulation change and the underlying mechanisms responsible for non-linearity, such as the weakening of the Atlantic Meridional Overturning Circulation and the CO2-induced changes in stratospheric ozone. The research is expected to provide insights that can enhance regional climate change assessments. The award period is from June 1, 2024 to May 31, 2027, and the project will also support the training of two graduate students.
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