江西省乐安县1973—2022年气候变化特征分析  

Analysis of Climate Change Characteristics in Le’an County,Jiangxi Province from 1973 to 2022

作　　者：董志询 缪斌斌 陈永乐 廖婵 桂敏 DONG Zhixun;MIAO Binbin;CHEN Yonge;LIAO Chan;GUI Min(Le’an County Meteorological Bureau,344300,Fuzhou,Jiangxi,PRC;Fuzhou Meteorological Bureau,344000,Fuzhou,Jiangxi,PRC)

机构地区：[1]乐安县气象局,江西抚州344300 [2]抚州市气象局,江西抚州344000

出　　处：《江西科学》2024年第4期871-875,共5页Jiangxi Science

基　　金：抚州市气象科研基金资助项目(FZQXKY202310)。

摘　　要：为揭示乐安县近50 a气候变化特征,基于乐安县国家基本气象站1973—2022年的气象资料,采用线性趋势、M-K突变检验和小波分析法揭示了乐安县近50 a气候变化趋势、突变现象和变化周期。结果表明,1973年以来乐安县气候变暖趋势显著,年平均气温的线性趋势率为0.47℃/(10 a),并在2006年发生突变,突变后气温显著上升,周期性变化比较显著。年降水量呈平稳趋势,且存在显著周期变化。年平均风速呈现缓慢增加趋势,第一主周期为42 a,年降水量、年平均风速均未发生明显突变。乐安县近50 a气候变化综合突变时间判定为2006年。In order to reveal the climate change characteristics of Le’an county in the past 50 years,based on the meteorological data of the National Basic Meteorological Station in Le’an county from 1973 to 2022,the study identified the climate change trends,mutation phenomena,and change cy-cles in Le’an county in the past 50 years by using linear trend analysis,M-K mutation test,and wavelet analysis.The results show a significant warming trend since 1973.The linear trend rate of the annual average temperature is 0.47℃/(10 a),and there was a sudden change in 2006.After the sudden change,the temperature rose significantly with distinctive periodic variation.The annual precipitation shows a stable trend with significant cyclical changes,while the annual average wind speed shows a slowly increasing trend,with the first main period being 42 years,and there are no obvious changes in annual precipitation and average annual wind speed.The comprehensive muta-tion time of climate change in Le’an county in the past 50 years is determined to be 2006.

关 键 词：气候变化特征 趋势分析 变化周期 乐安县 

分 类 号：P42[天文地球—大气科学及气象学]