Quantifying barotropic and baroclinic eddy feedbacks in the persistence of the Annular Modes

Yang Zhang1, Yu Nie1,2, Gang Chen3, Xiu-Qun Yang4 and David Alex Burrrows5, (1)Nanjing University, Nanjing, China, (2)Beijing Climate Center, China Meteorological Administration, Beijing, China, (3)University of California Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, CA, United States, (4)Nanjing University, School of Atmospheric Sciences, Nanjing, China, (5)Cornell University, Ithaca, NY, United States