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

Yang Zhang1, Yu Nie1,2, Gang Chen3, Xiu-Qun Yang1 and David Alex Burrrows4, (1)Nanjing University, Nanjing, China, (2)Beijing Climate Center, China Meteorological Administration, Beijing, China, (3)University of California, Los Angeles, Los Angeles, CA, United States, (4)Cornell University, Ithaca, NY, United States