【摘要】 继文献[10—12]后,本文分析了我国“环流—天气气候—谷物天气产量”体系长期振动三个主要频带的分布情况.发现大型环流在一些“活动区域”的低频振动与这三个主要频带分布特征有密切关联;赤道附近和南半球低纬类似亚欧大陆中高纬地区是环流的关键性“活动区域”,对我国天气和农业有重要影响.讨论了海陆分布和大地形在由大型环流低频振动形成的时、空结构特征中的作用以及大型环流“活动区域”之间产生低频耦合——“涛动”等问题.更多还原

【Abstract】 On the basis of [10-12], the distribution of the three main frequency bands of the long-term fluctuations about the "Circulation-Weather-Yield" system of China was analyzed. It is found that the distribution is closely related to the low-frequency fluctuations of the large-scale circulation in a few active areas, and there are "key active areas" near the equtorial zone and the Southern Hemisphere low-latitude areas, similar to the Eurasian Continent middle-high latitude areas, whic,h have strong influence on the weather and crop of China. Furthermore, this paper has also discussed some relevant problems.更多还原