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全球变化科学紫荆论坛(183)Rapidly Changing Arctic Climate System and Its Impact on Midlatitude Climate and Weather: Recent Progresses and Debates

2016-12-05

报告题目:Rapidly Changing Arctic Climate System and Its Impact on Midlatitude Climate and Weather: Recent Progresses and Debates

报告时间:2016.12.08  10:00-12:00

报告地点:蒙民伟科技大楼南楼S527

主讲人:Prof Xiangdong Zhang 

                International Arctic Research Center and Department of Atmospheric Sciences, University of Alaska Fairbanks

 

讲座简介:

Rapid climate change has occurred in the Arctic, which is representatively indicated by a decade-long accelerated decline of sea ice extent and volume and an amplified warming trend at a rate of almost twice the global average. Along with these changes, extreme climate events of sea ice cover loss also occurred in summer 2007, 2012, and 2016. At the same time, dramatic changes have also occurred in broader areas of the Northern Hemisphere. Many aspects of these changes are obviously beyond the scope of conventional climate fluctuations, and also could not be solely accounted for by greenhouse-gas-emissions forcing. In this presentation, we will introduce our research progresses integrated from data analysis and model simulations towards improving systematic understanding of the rapid changes in the Arctic and the enhanced linkage between Arctic and mid-latitude climate and weather. The recent strong debates on Arctic’s impact on mid-latitude climate and weather will be highlighted.

 

主讲人简介:

Xiangdong Zhang is professor in the Department of Atmospheric Sciences and International Arctic Research Center at the University of Alaska Fairbanks. He has conducted integrative research on Arctic and northern high-mid latitude climate variability and changes, atmospheric circulation dynamics, water and energy cycle, storm track dynamics, atmosphere-sea ice-ocean interactions, and extreme climate, weather, and hydrology events. Nowhe is co-chairing the U.S. CLIVAR working group on “Arctic Change and Possible Influence on Mid-latitude Climate and Weather”.