【摘要】 对广州市2 0 0 4年6月2 7日～7月3日出现的一次罕见高温天气过程及历史上的高温天气进行分析,结果表明:( 1)广州出现高温的概率是在增加的,且长时间持续高温发生概率在2 0世纪80年代以后显著增大;( 2 )广州历史上3 8℃及以上的4次高温过程都是由副热带高压和台风外围环流共同影响形成的;( 3 )粤北南岭山脉“焚风效应”和城市“热岛效应”对广州市2 0 0 4年6月2 7日～7月3日出现的罕见高温天气过程也起一定的增幅作用。更多还原

【Abstract】 A rare high-temperature event in Guangzhou from June 27 th to July 3 rd is compared to the high temperature weathers in history. Results show that (1) The probability of high temperature weather in Guangzhou has been increasing, especially for the durative high-temperature events since 1980s; (2) In history, four high-temperature weathers (≥38℃) in Guangzhou were all affected by sub-tropical high and the peripheral circulation of typhoon; (3)The Foehn Effect of Nanling Mountain and the urban heat island effect also contributed to this rare high temperature weather.更多还原