Abstract
Atmospheric blocking causes extreme weather condition in the middle latitudes. A previous study mentioned that the winter blocking will shift northeastward over the North Pacific for future climate. This study investigates about the effects of the shifting of winter blocking on extreme events over surrounding Japan by utilizing Coupled Model Intercomparison Project Phase 5 datasets. In the 20th century climate, the winter blocking over the sea of Okhotsk tended to occur with extreme low temperature days over surrounding Japan, and it was predicted that the blocking will reduce in the future climates. It is revealed that the low temperature days over Japan will tend to occur with wide area and will decrease with blocking over the sea of Okhotsk in the future climate.