摘要
通过对1954-2005年深圳高温天气及其环流背景的统计分析,探讨高温天气的气候特征及主要影响系统,并分析了不同天气系统影响下高温的空间分布特征,初步得出高温的预报流程。结果表明:①深圳夏季高温日数呈增多趋势;②西太平洋副热带高压是造成深圳高温天气的重要天气系统;③受热带气旋外围下沉气流控制是深圳出现高温的主要原因;④高温的空间分布具有明显的地域性,呈自北向南递减的趋势,南部气温比北部偏低。不同天气系统影响下,高温出现范围有很大差别。
The synoptic-climatic characteristics and the influential system of high-temperature weather are studied through the analysis of high-temperature processes from 1954 to 2005. The features of the high-temperature distribution under different weather systems are also analyzed and the forecasting procedures for high-tempera- ture weather are designed. It is proved that the number of high-temperature days has an increasing tendency; the subtropical high pressure is a very important weather system inducing the high-temperature weather in Shenzhen; the peripheral sinking air around a tropical cyclone is mainly responsible for the occurrence of the high- temperature weather in Shenzhen; the spatial distribution of high temperature has clearly geographical characteristics with the decreasing temperature from the north to the south, and the high-temperature areas in Shenzhen have obvious differences under different weather systems.
出处
《气象科技》
2007年第2期191-197,共7页
Meteorological Science and Technology
关键词
高温
气候特征
影响系统
high temperature, climatological feature, circulation pattern
