Professor Edmund Chang

School of Marine and Atmospheric Sciences, SoMAS, Stony Brook University

Abstract
Extratropical cyclones give rise to much of the high impact weather in the mid-latitudes, including precipitation, high winds, blizzards, and coastal storm surges. All of these can cause fatalities and economic damages. Furthermore, synoptic scale waves associated with these cyclones are responsible for the transport of much of the heat, moisture, and momentum across the mid-latitudes. Hence these systems are also important for the maintenance of the general circulation. These systems generally tap the available potential energy associated with the pole-to-equator temperature gradient as well as latent heating to grow. Under global warming, the pole-to-equator temperature gradient, as well as the amount of moisture in the atmosphere, are both expected to change. Hence extratropical cyclone (or storm track) activity is expected to change. In this talk, I will review projected storm track changes by models participating in the Coupled Models Intercomparison Project Phase 5 and Phase 6 (CMIP5 and CMIP6), discussing the similarities and differences between the projections, as well as some impacts of the projected storm track changes on high impact weather.
邀請人：李時雨 博士