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一、问题的提出 1970年12月11日我省出现一次冬季罕见的大暴雨,11~(08)—12~(08)宁化、清流、阴溪、沙县、南平、古田等6个县市雨量达100mm以上,象这样大范围的大暴雨,即使在我省的5—6月的雨季中也不多见,群众反映是百年不遇的。事后分析表明,这次暴雨出现之前,中低层暖湿气流明显加强,并出现中低空西南急流,而冷空气的活动并不明显,这表明,这次冬季大暴雨的出现,与暖空气加强有密切关系。由此,我们联想到当年11月13日有一个大台风在孟
First, the issue raised December 11, 1970 a rare winter heavy rains in our province, 11 ~ (08) -12 ~ (08) Ninghua, Qingliu, Yinxi, Shaxian, Nanping, Gutian and other six counties rainfall Up to 100mm above, heavy rains such as this one are rare even in the rainy season of May-June in our province, and the mass reflection is rare in a hundred years. Post hoc analysis showed that before the torrential rains, the warm and humid flow at the middle and lower levels was significantly strengthened and the low-mid-southwest jet appeared. However, the cold-air activity was not obvious. This shows that the occurrence of this winter heavy rainfall is closely related to the warming of warm air relationship. As a result, we recall that there was a typhoon on November 13 of that year in Bangladesh