Purdue Climate Change Research Center

Noah Diffenbaugh


Noah’s Climate and Earth System Dynamics Group is interested in the mechanisms and impacts of environmental change. They use a variety of numerical tools, including global and regional climate models, to understand the processes that govern the behavior of the climate system. These processes are characterized both by observations of the present state of the system and by records of past changes. By combining climate model experiments with direct and proxy observations, they seek to understand the mechanisms that shape, and have shaped, known expressions of the climate system. Additionally, through model experiments that test climate system responses to external forcings and internal feedbacks, they seek to define the mechanisms by which climate may change in the future, and the impacts that those changes may have on natural and human systems.

Noah’s group pursues research themes focused at the interfaces of the atmosphere-biosphere-hydrosphere-cryosphere-geosphere-anthrosphere system including: (a) atmosphere-vegetation feedbacks, (b) response of extreme temperature and precipitation events to anthropogenic radiative forcing, (c) response of eastern boundary current regions to changes in radiative forcing, (d) mechanisms of Holocene climate variability, and (e) Impacts of climate change on natural and human systems. They are also expanding their research directions to include seasonal prediction of monsoon systems, the processes linking sea surface temperatures and terrestrial precipitation through time, and relationships between climate and continental dynamics.

Selected Publications

Diffenbaugh, N. S., F. Giorgi, L. Raymond, and X. Bi, (2007), Indicators of 21st century socioclimatic exposure, Proceedings of the National Academy of Sciences of the United States of America 104 (51): 20195-20198.

Diffenbaugh, N. S., J. S. Pal, G. Filippo, and X. Gao, (2007), Heat stress intensification in the Mediterranean climate change hotspot, Geophysical Research Letters 34, L11706, doi:10.1029/2007GL030000.

Trapp, Robert J., N.S. Diffenbaugh, H.E. Brooks, M.E. Baldwin, E.D. Robinson and J.S. Pal, (2007), Changes in severe thunderstorm environment frequency during the 21st century caused by anthropogenically enhanced global radiative forcing, Proceedings of the National Academy of Sciences, 104(50), 19719-19723.

Diffenbaugh, N. S. and M. Ashfaq, (2007), Response of California Current forcing to mid-Holocene insolation and sea surface temperature, Paleoceanography 22, PA3101, doi:10.1029/2006PA001382.

White, Michael A., N.S. Diffenbaugh, G.V. Jones, J.S. Pal and F. Giorgi, (2006), Extreme heat reduces and shifts United States premium wine production in the 21st century, Proceedings of the National Academy of Sciences, 103(30), 11217-11222.

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