Edmund K.M. Chang
My main research focus is on investigating mid latitude storms, including how to forecast them better from a few days out to a season, how they may change under global warming, and their immense societal impacts. The distinctive characteristic of my research lies in the fact that I employ a wide range of tools in my research, ranging from analyses of gridded atmospheric analyses and state of the art climate model simulations to learn about the basic characteristics of the phenomena, examination of actual observations to validate what have been learnt from the gridded data, and dynamical studies using a suite of intermediate/mechanistic models to achieve better understanding of these observed phenomena. My major research interests and some selected publications are listed below. For more details and a complete list of publications, see my web page.
Major research topics
- Extratropical cyclones – forecasting and impacts
- Dynamics and life cycle of baroclinic waves and cyclones
- Dynamics, variability, and trends of storm tracks
- Wave/mean flow interactions
- Tropical/extratropical interactions, tropical meteorology
Zheng, M., Chang, E. K., Colle, B.A., Luo, Y. and Zhu, Y., 2017. Applying Fuzzy Clustering to a Multimodel Ensemble for US East Coast Winter Storms: Scenario Identification and Forecast Verification. Weather and Forecasting, 32(3), pp.881-903.
Ma, C. G., & Chang, E. K. (2017). Impacts of storm track variations on winter time extreme weather events over the continental US. Journal of Climate, (2017).
Guo, Y., Shinoda, T., Lin, J., & Chang, E. K. (2017). Variations of Northern Hemisphere Storm Track and Extratropical Cyclone Activity Associated with the Madden-Julian Oscillation. Journal of Climate, (2017).
Wang, J., Kim, H. M., & Chang, E. K. (2017). Changes in Northern Hemisphere Winter Storm Tracks under the Background of Arctic Amplification. Journal of Climate, (2017).
Zheng, M., Chang, E. K., Colle, B. A., Luo, Y., & Zhu, Y. (2017). Applying Fuzzy Clustering to a Multi-Model Ensemble for US East Coast Winter Storms: Scenario Identification and Forecast Verification. Weather and Forecasting, (2017).
Chang, E. K. (2017). Projected Significant Increase in the Number of Extreme Extratropical Cyclones in the Southern Hemisphere. Journal of Climate, (2017).
Trammell, J. H., Jiang, X., Li, L., Kao, A., Zhang, G. J., Chang, E. K., & Yung, Y. (2016). Temporal and Spatial Variability of Precipitation from Observations and Models*. Journal of Climate, 29(7), 2543-2555.
Chang, E.K.M, C.-G. Ma, C. Zheng, and A.M.W. Yau, 2016: Observed and projected decrease in Northern Hemisphere extratropical cyclone activity in summer and its impacts on maximum temperature. Geophys. Res. Lett., 43, 2200-2208. Doi:10.1002/2016GL068172
Chang, E.K.M, C. Zheng, P. Lanigan, A.M.W. Yau, and J.D. Neelin, 2015: Significant modulation of variability and projected change in California winter precipitation by extratropical cyclone activity, Geophys. Res. Lett., 42, 5983-5991, doi: 10.1002/2015GL064424.
Xia, X., and E.K.M. Chang, 2014: Diabatic damping of zonal index variations, J. Atmos. Sci., 71, 3090-3105, doi:10.1175/JAS-D-13-0292.1.
Maloney, E.D., S.J. Camargo, E. Chang, et al., 2014: North American climate in CMIP5 experiments: Part III: Assessment of twenty-first-century projections, J. Climate, 27, 2230-2270, doi: 10.1175/JCLI-D-13-00273.1.
Chang, E.K.M, 2013: CMIP5 projection of significant reduction in extratropical cyclone activity over North America. J. Climate, 26, 9903-9922, doi:10.1175/JCLI-D-13-00209.1.
Chang, E.K.M., Y. Guo, and X. Xia, 2012: CMIP5 multimodel ensemble projection of storm track change under global warming. J. Geophys. Research, 117, D23118, doi:10.1029/2012JD018578.
Chang, E.K.M., 2009: Diabatic and orographic forcing of northern winter stationary waves and storm tracks. J. Climate, 22, 670-688.
Chang, E.K.M., and Y. Guo, 2007: Is the number of North Atlantic tropical cyclones significantly underestimated prior to the availability of satellite observations? Geophys. Res. Letts., 34, L14801, doi: 10.1029/2007GL030169.
Chang, E.K.M., 2006: An idealized nonlinear model of the Northern Hemisphere winter storm tracks. J. Atmos. Sci., 63, 1818-1839.
Chang, E.K.M., 2005: The impact of wave packets propagating across Asia on Pacific cyclone development. Mon. Wea. Rev., 133, 1998-2015.
Harnik, N., and E.K.M. Chang, 2004: The effects of variations in jet width on the growth of baroclinic waves: Implications for midwinter Pacific stormtrack variability. J. Atmos. Sci., 61, 23-40.
Chang, E.K.M., S. Lee, and K.L. Swanson, 2002: Storm track dynamics. J. Climate, 15, 2163-2183.
Chang, E.K.M., and Y.F. Fu, 2002: Inter-decadal variations in Northern Hemisphere winter storm track intensity. J. Climate, 15, 642-658.
Chang, E.K.M., 2000: Wave packets and life cycles of baroclinic waves: Examples from the Southern Hemisphere summer season of 84/85. Mon. Wea. Rev., 128, 25-50.
Chang, E.K.M., and D.B. Yu, 1999: Characteristics of wave packets in the upper troposphere. Part I: Northern hemisphere winter. J. Atmos. Sci., 56, 1708-1728.
Chang, E.K.M., 1999: Characteristics of wave packets in the upper troposphere. Part II: Hemispheric and seasonal differences. J. Atmos. Sci., 56, 1729-1747.
Chang, E.K.M., 1995: The Influence of Hadley Circulation Intensity Changes on Extratropical Climate in an idealized model. J. Atmos. Sci., 52, 2006-2024.
Chang, E.K.M., and I. Orlanski, 1993: On the Dynamics of a Storm Track. J. Atmos. Sci., 50, 999-1015.
Chang, E.K.M., 1993: Downstream Development of Baroclinic Waves as Inferred from Regression Analysis. J. Atmos. Sci., 50, 2038-2053.
Congratulations to our graduates! The annual SoMAS Convocation occurred on Friday, May 18, 2018 at the Student Activities Center auditorium. Students gathered with their friends and family and SoMAS faculty and staff to celebrate the completion of their journey at...
Image above: Satellite image of a bomb cyclone moving along the North Atlantic storm track on the East Coast as seen from NOAA's GOES-16 Satellite on January 4, 2018. Credit: NOAA/CIRA From To improve season storm track forecasts, look to the tropical stratosphere by...
From Stemming The (Rising) Tide of Climate Change on the Stony Brook Magazine, Winter 2018 by Victoria Cebalo with Illustrations by Anthony Freda Research yields new strategies for protecting the biosphere. There’s no denying that as the Earth is getting warmer, our...
Photo above: Joy Pawirosetiko, an Honors College student who works with Dr. Sharon Pochron in Sustainability Studies, researched the effects of Roundup fertilizer on earthworms. From "President Stanley Joins International Coalition of Universities to Tackle Climate...
From Read the Draft of the Climate Change Report by the New York Times, August 7, 2017 A final draft report by scientists from 13 federal agencies concludes that Americans are feeling the effects of climate change right now. The report was completed this year and is...
From the RFSUNY Annual Report 2016 Dr. Edmund Chang, professor of atmospheric sciences at the Institute of Terrestrial and Planetary Atmospheres at the School of Marine and Atmospheric Sciences at Stony Brook University and coleader of a NOAA task force, investigates...
From "NSF Grant Bolsters Geosciences Education Support for Underrepresented Students" on SBU Happenings, December 21, 2016 with contributions by Brian Colle Stony Brook University was recently awarded a three-year grant from the National Science Foundation (NSF) to...
Symposium in Honor of SoMAS Faculty Marv Geller at the 2016 Annual Conference of the American Meteorological Society
On January 13-14, 2016, a special symposium was held at the Ernest N. Morial Convention Center in New Orleans to honor SoMAS professor Marvin Geller as part of the 2016 Annual Conference of the American Meteorological Society . The Marvin Geller Symposium featured 24...
By PATRICIA KITCHEN, Newsday email@example.com A new prediction model tailored to forecast the number of tropical cyclones that could hit New York State in a given season has been developed by three Stony Brook University professors. For the coming...
Friday, August 1st, SoMAS hosted a summer research symposium, showcasing the work of undergraduates who spent the summer working on research projects with SoMAS faculty mentors. Many of the students were part of the Research Experience for Undergraduates (REU)...