现代农业科技Issue(8)：115-119,5.DOI:10.3969/j.issn.1007-5739.2024.08.030
1971-2020年河源市高温热浪变化特征分析
Change Characteristics of High Temperature and Heat Wave in Heyuan City from 1971 to 2020
摘要
Abstract
Based on daily maximum temperature data from five national meteorological observatories in Heyuan City from 1971 to 2020,statistical analysis,Mann-kendall(M-K)sudden change test and wavelet analysis were used to analyze the change characteristics of high temperature climate in Heyuan City.The results showed that the frequency,duration and intensity of high temperature and heat wave in Heyuan City from 1971 to 2020 showed an overall increasing trend,with a spatial distribution trend of more in the east and less in the west.The average increase rate of high temperature days was 0.46 d/a,with an average of 107.7 d/a of high temperature and 21.02 times/a of high temperature and heat wave events.High temperature days and high temperature and heat wave events mainly occurred from June to September,and the peak period was from July to August.The high temperature weather in Longchuan County occurred frequently and lasted for a long time,making it the hottest place in Heyuan City.The interannual variation of high temperature days in Longchuan County had strong volatility,with two rising periods during 1971-1988 and 1999-2007.Using M-K test and sliding t-test methods,we found two sudden change points of the high temperature in Longchuan County.Wavelet analysis showed that the periodicity of high temperature and heat wave in Heyuan City was not significant,only Heping County's 2-6-year cycle in 2006-2018 and Zijin County's quasi-2-year cycle and quasi-5-year cycle in 1994-2016 and quasi-12-year cycle in 1982-2006 passed the significance test.关键词
高温热浪/气候特征/小波分析/副热带高压/广东河源/1971-2020 年Key words
high temperature and heat wave/climate characteristic/wavelet analysis/subtropical high/Heyuan Guangdong/1971-2020分类
天文与地球科学引用本文复制引用
胡琼文,林洁,张权,林伟彬,刘裕强,曾钦文..1971-2020年河源市高温热浪变化特征分析[J].现代农业科技,2024,(8):115-119,5.基金项目
广东省气象局科学技术研究项目(GRMC2021XQ06) （GRMC2021XQ06）
河源市科技特派员项目(河科[2022]49号). （河科[2022]49号）
