摘要
文章基于河源市1971-2020年5个国家气象观测站的气象数据,采用线性趋势分析、滑动平均法等方法,着重探究河源市高温热浪的时空演变规律,并深入剖析气象因子对其的驱动作用。结果表明,河源市高温热浪呈现东多西少的空间分布特征,龙川县受此高温影响最为明显;时间分布主要集中在6-9月,年际变化显现出上升趋势,平均每十年高温日的天数增长4.6天。副热带高压、热带气旋外围下沉气流以及降水量、风速、气压等气象因子的协同作用,共同影响着河源市高温热浪的形成与发展。
Based on meteorological data from five national meteorological observation stations in Heyuan City from 1971 to 2020,the article employs methods such as linear trend analysis and moving average method to focus on exploring the spatiotemporal evolution of high temperature and heatwaves in Heyuan City,and deeply analyzes the driving effects of meteorological factors on them.The results indicate that high temperature and heatwaves in Heyuan City exhibit a spatial distribution characteristic of being more frequent in the east and less in the west,with Longchuan County being most significantly affected by this high temperature.The temporal distribution is mainly concentrated in June to September,with interannual variations showing an upward trend,with an average increase of 4.6 days per decade in the number of high temperature days.The synergistic effects of the subtropical high pressure,sinking airflow around tropical cyclones,as well as meteorological factors such as precipitation,wind speed,and atmospheric pressure,jointly influence the formation and development of high temperature and heatwaves in Heyuan City.
作者
刘衍波
魏兰华
Liu Yanbo;Wei Lanhua(Zijin Meteorological Bureau of Guangdong Province,Zijin 517400)
出处
《气象水文海洋仪器》
2025年第6期126-128,132,共4页
Meteorological,Hydrological and Marine Instruments
基金
广东省东源县气象服务中心课题项目“源市近50年高温热浪变化特征及其成因分析”(2021C05)资助。
关键词
气象因子
高温热浪
气候特征
meteorological factors
high temperature heat wave
climatic characteristics
