THE VARIATION OF GENERAL CIRCULATION AND THE EXPLOSIVE WARMING IN THE MIDDLE STRATOSPHERE DURING WINTER

Based on the avialable aerological meterial in the middle and lower stratosphere for 4 winters(1957-1960), the author investigates the following problems:(1) the classification of stratospheric circulation types(2) the periodical variation of temperature and circulation in stratosphere(3) the explosive warming and the associated changges in circulation. Furthermore, the relations between stratospheric and tropospheric circulation also discussed in the light of synoptic analysis. The results are given below.