近60年广西日照时空变化规律和特征分析  

Analysis on Spatial-Temporal V ariation and Characteristics of Sunshine in Guangxi in Recent 60 Years

作　　者：何如[1] 罗红磊 黄卓[1] 李广桃 陆芊芊 HE Ru;LUO Honglei;HUANG Zhuo;LI Guangtao;LU Qianqian(Guangxi Zhuang Autonomous Region Climate Center,Nanning 530022,China;Guangxi Zhuang Autonomous Region Meteorological Disaster Prevention Technology Center,Nanning 530022,China)

机构地区：[1]广西壮族自治区气候中心,广西南宁530022 [2]广西壮族自治区气象灾害防御技术中心,广西南宁530022

出　　处：《红水河》2024年第3期62-68,共7页Hongshui River

基　　金：广西重点研发计划项目(桂科AB23026052、桂科AB24010151);广西自然科学基金项目(2015GXNSFBA139189);广西气象局气象科研计划项目(桂气科2019M09)。

摘　　要：为了更好地掌握广西光照资源状况,笔者利用1961—2020年广西91个国家气象观测站日照观测资料,采用线性倾向估计、M-K检验等统计分析方法,开展近60年广西日照时数、日照百分率的时空变化规律和特征研究。结果表明:广西年日照时数呈波动下降变化趋势,20世纪60—80年代和21世纪00年代日照时数属于偏多期,20世纪90年代和21世纪10年代属于偏少期;广西年均日照时数、日照百分率分别在1981年、1974—1976年间出现突变;日照空间分布呈现南部多北部少,河谷平原多、丘陵山区少的特点;日照存在明显的季节差异,日照时数以夏季最多,冬季最少,大部分地区秋季多于春季;日照百分率全区大部分地区以秋季最高,夏季次高,冬春季最少。研究成果可为广西光照资源的开发利用提供基础数据和依据。In order to better grasp the status of solar radiation resources in Guangxi,the authors used the sunshine observation data of 91 national meteorological observation stations in Guangxi from 1961 to 2020,and used statistical analysis methods such as linear tendency estimation and M-K test to carry out the spatial-temporal variation and characteristics of sunshine duration and percentage of sunshine in Guangxi in the past 60 years.The results show that the annual sunshine duration in Guangxi show a fluctuating downward trend,with more sunshine hours in the 1960s to 1980s and 2000s,and less sunshine hours in the 1990s and 2010s;The annual average sunshine duration and percentage of sunshine in Guangxi show abrupt changes in 1981 and 1974-1976,respectively;The spatial distribution of sunshine is characterized by more in the south and less in the north,more in the valley plain and less in the hilly and mountainous areas;There are obvious seasonal differences in sunshine duration,the sunshine duration are the most in summer and the least in winter,sunshine duration in autumn is more than in spring in most areas;The percentage of sunshine in most areas of Guangxi is the highest in autumn,the second highest in summer,and the least in winter and spring.The research results can provide basic data and basis for the development and utilization of solar radiation resources in Guangxi.

关 键 词：时空变化规律 日照 日照时数 日照百分率 广西 

分 类 号：P467[天文地球—大气科学及气象学]