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夏季黄、渤、日本海高压与华北暴雨的观测事实
The Observations of the Huanghai Sea, Bohai Sea and the Sea of Japan Highs and the Heavy Rain in North China Summer
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摘要: 本文利用1966—1987年夏季（6—8月）逐日500hPa环流图，把在30°—50°N、110°—140°E范围内出现的高压过程按其形成的性质分为五类，即西风带高压、高原高压、副热带高压、西风带高压与副热带高压联合和高原高压与副热带高压联合五类高压过程。分析了上述五类高压过程的时间和地理分布的气候特征，并指出盛夏（7—8月）华北地区，尤其是华北东部和东北南部地区出现的暴雨和大暴雨天气过程与这些稳定的高压形势有着极其密切的关系。Abstract: In this paper, utilizing day-to-day 500 hPa circulation charts during June–August from 1966 to 1987, the high processes occurred in the region of 30o—50oN, 110o—140oE have been classified into five patterns in light of their forming properties. They are westerlies high, plateau high, subtropical high, the combinative pattern of westerlies high with subtropical high and the combinative pattern of plateau high with subtropical high. The climatic characteristics of the temporal and geographical distributions for the above five patterns have also been analysed. It is shown that the heavy rain weather processes occurred in north China, especially in the east of north China and in the south of northeast China are in close relatiopship with these stable high situations
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