Abstract

The El Nino-Southern Oscillation (ENSO) is the strongest signal in the tropics on the interannual time scale, and it can exert substantial influences on the weather and climate over many parts of the globe. Besides the well-known air-sea interaction and oceanic dynamical processes within the tropics, studies indicated that atmospheric forcings over the extratropics are also important in forming and maintaining the ENSO variability. In this talk, Shangfeng Chen will report that the significant impacts of the Arctic Oscillation (AO),the first leading mode of atmospheric variability over the extratropical Northern Hemisphere (NH), in spring on the subsequent ENSO via inducing anomalous westerlies over the tropical western Pacific. His talk includes:1) physical process for influence of the spring AO on the winter ENSO; 2) interdecadal change in the spring AO-ENSO connection and the related mechanism; 3) performances of the CMIP5 models in simulating the AO-ENSO connection.

Presenter Profile

Professor Chen is interested in the climate dynamics and air-sea interaction. He received Bachelors and PhD degrees from Sun Yat-Sen University and IAP-CAS, respectively. Now, he works in IAP as an associate professor. He has published about 30 papers in the international journals of atmospheric sciences.(Homepage:http://www.escience.cn/people/chenshangfeng/index.html)