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Edmund K.M. Chang


Ph.D., 1993, Princeton University
telephone: (631)632-6170

Atmospheric dynamics and diagnoses, climate dynamics, synoptic meteorology.

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Research Interests

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

Selected Publications

Ma, C.-G., and E.K.M. Chang, 2017: Impacts of storm track variations on winter time extreme weather events over the
continental US, J. Climate, in press.

Chang, E.K.M, 2017: Projected significant increase in the number of extreme extratropical cyclones in the Southern Hemisphere, J. Climate, in press, doi:10.1175/JCLI-D-16-0553.1

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.

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