Purdue Climate Change Research Center

Jeff Trapp

Contact Information

CIVL 4277A


Jeff is interested in basic questions about convective and larger scale weather phenomena, especially in the Midwestern United States, under different climate change scenarios. For example, he is investigating extremes in sub-daily precipitation over the next century using a telescoping numerical modeling approach. The convective storms that can lead to such extreme events are also capable of producing destructive surface winds, hail, lightning, and tornadoes. He is working to ascertain the severity and organizational mode of thunderstorms at specific times during the next several hundred years or more. The societal, economic, and ecological impacts of these attendant hazardous weather phenomena tend to be significant. This study will address fundamental questions on severe storms and tornadoes raised by the intergovernmental Panel on Climate Change.

Selected Publications

Trapp, R. J., B. A. Halvorson, and N. S. Diffenbaugh, Telescoping, multimodel approaches to evaluate extreme convective weather under future climates (2007), Journal of Geophysical Research-Atmospheres 112, D20109, doi:10.1029/2006JD008345.

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

Trapp, R. J., D. M. Wheatley, N. T. Atkins, R. W. Przybylinski, and R. Wolf, 2006: Buyer beware: Some words of caution on the use of severe wind reports in post-event assessment and research. Weather and Forecasting, 21, 408-415.

Diffenbaugh, N. S., J. S. Pal, R. J. Trapp, and F. Giorgi, 2005: Interactions of large- and fine-scale processes dictate the greenhouse response of extreme daily climate events over the United States. Proceedings, National Academy of Sciences, 102, 15774-15778.

Trapp, R. J., G. J. Stumpf, and K. L. Manross, 2005: A reassessment of the percentage of tornadic mesocyclones. Weather and Forecasting, 20, 680-687.

Trapp, R. J., S. A. Tessendorf, E. G. Savageau, and H. E. Brooks, 2005: Tornadoes in squall lines and bow echoes. Part I: Climatological distribution. Weather and Forecasting, 40, 23-34.


Ph.D. ­ University of Oklahoma

Links of Interest

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