Some Climatological Characteristics During 1982—1983 Winter in East Asia

The main feature of the climate in winter of 1982—1983 is characterized by two kinds of anomalous states (warm dry and cold wet) distributed in three zones. It is found that as El-Nino is prevailing, the subtropical high in west pacific is especially strong which is the direct cause of the warm and dry climate in south of 15oN in East Asia. The warmer climate in Xinjiang Uygur Autonomous Region and colder climate in the southwest and the south of China have teleconnections with El-Nino event. The extremely abundant precipitation and cold climate in zone 15o—30oN is closely connected with the intensification and south movement of southern jet stream in East Asia. This jet stream is intensified by intensification of subtropical high on its southern side, and strong negative anomalous of air temperature and the large snow cover on its northern side, i. e. on Xizang (Tibet) Plateau. The rainfall zone in essence is the intensified monsoon rain, similar to Meiyu of Yangtze River in June