Univeristy of Alaska Fairbanks 99775;
University of Science and Technology of China 230026;
Institute of Atmospheric Physics Academy of Sciences 100029;
NOAA/Pacific Marine Environmental Laboratory 98115;
Alfred Wegener Institute Center for Polar and Marine Research Potsdam;
Finnish Meteorological Institute-00101 Helsinki;
University of Washington 98105;
extreme weather events; sea surface temperature; Arctic sea ice; Arctic amplification; sudden stratospheric warming; stratospheric polar vortex;