imulation Study on the Impact of Arctic Sea Ice Anomalies on China Winter Temperature

摘要

In this modeling study, NASA GISS ModelE atmospheric generalcirculation model was employed to investigate the atmosphericresponse to winter (DEC-FEB) sea ice anomalies. Two sensitive caseswere simulated, one used 10-yr linear trend of winter sea iceconcentration in the high latitude of north hemisphere from 40°N to90°N (Atrend) as the imposed boundary forcing and the other used 10-yr linear trend of winter sea ice concentration in north Pacific sector(Ptrend, 60-80°N,30°W-45°E). The responses were obtained from themean difference between the sensitive experiments and the control. Theeffects of sea ice anomalies on China winter temperature werediscussed, especially, the way of China winter response to the sea iceanomalies were further revealed.