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我国是世界上著名的季风气候区。但过去相当多的研究是从气候概念来理解季风的。实际上,各年季风的起迄日期有早有晚,而强度也不同。正是由于这种差异,造成了我国各地的旱涝灾害。因此从个别年来研究季风,并探讨形成季风年际变化可能的原因是十分必要的。 本文尝试通过1971年与1972年季风活动的对比分析,一方面了解环流特征季节变化的异同,另一方面希望能对这两年旱涝产生的原因有一个更明确的认识。选这两年来讨论对比,是考虑到从夏季间,月降雨量的分布特征来看均偏旱,特别是这两年7月的旱情都
Our country is a famous monsoon climate zone in the world. But quite a few studies in the past have understood monsoons from the concept of climate. In fact, the starting and ending dates of the monsoons in various areas are somewhat earlier and lower, and the intensities are also different. It is precisely because of this difference that drought and flood disasters in various parts of our country have been caused. Therefore, it is necessary to study the monsoons from a few years and to explore the possible causes of the interannual variations of the monsoons. This paper attempts to compare and analyze the monsoon activities between 1971 and 1972, and on the one hand understand the similarities and differences between the seasonal changes of the circulation characteristics on the one hand and hope to have a clearer understanding of the causes of the drought and flood over the past two years. The comparison between the two elections over the past two years is based on the fact that all the rainfalls are characterized by the distribution of rainfall during the summer and especially during the drought in July and July last year