1971-2020年广西喀斯特地区高温灾害时空变化特征  

Spatio-temporal variation of high temperature disasters in karst area of Guangxi from 1971 to 2020

作　　者：谢映 陈燕丽 陈耀飞 苏相琴 XIE Ying;CHEN Yanli;CHEN Yaofei;SU Xiangqin(Guangxi Institute of Meteorological Sciences,Nanning 530022,China;Hechi Meteorological Bureau,Guangxi Hechi 547100,China;Guangxi Information Vocational and Technical College,Nanning 530299,China)

机构地区：[1]广西壮族自治区气象科学研究所,南宁530022 [2]环江毛南族自治县气象局,广西环江547100 [3]广西信息职业技术学院,南宁530022

出　　处：《气象研究与应用》2023年第4期102-107,共6页Journal of Meteorological Research and Application

基　　金：广西科技重点研发项目(桂科AB20159022、AB21238010);2021年度广西高校中青年教师科研基础能力提升项目(2021KY1922)。

摘　　要：利用线性趋势分析和GIS空间插值等方法,对广西喀斯特地区1971—2020年≥35℃高温日数、≥35℃有效积温进行分析,初步探究其时空分布规律。结果表明,1971—2020年广西喀斯特地区年平均≥35℃高温日数、≥35℃有效积温均呈上升变化趋势,气候倾向率分别2.8 d·(10a)^(-1)、3.5℃·(10a)^(-1);7—8月高温更为集中。空间分布上,≥35℃高温日数和≥35℃有效积温南北差异明显,呈现西南高、东北低的特点,崇左市为主要的高值区。从高温变化趋势空间分布来看,西南和东北均呈增多变化趋势,崇左市和桂林市增多趋势明显。In this study,linear trend analysis and GIS spatial interpolation were used to analyze the number of≥35℃days and≥35℃effective accumulated temperature from 1971 to 2020 in Guangxi karst region,and to preliminarily investigate their spatial and temporal distribution patterns.The results show that from 1971 to2020,the annual average number of ≥35℃ days and ≥35℃ effective accumulated temperature in Guangx karst region were on an upward trend,with a tendency rate of 2.8 d·(10a)~(-1) and 3.5℃·(10a)~(-1) respectively,the high temperature in July-August was more concentrated.In terms of spatial distribution,≥35℃ days and≥35℃ effective accumulated temperature had a clear north-south differences in characteristics.The absolute multi-year mean of high temperatures showed a characteristic of high in the southwest and low in the northeast,and Chongzuo City was the main high-value area.In terms of the amplitude of high temperature changes,both the southwest and the northeast showed an increasing trend,while the high temperature changes in Chongzuo City and Guilin City were more obvious.

关 键 词：高温灾害 喀斯特地区 趋势分析 时空变化 

分 类 号：P467[天文地球—大气科学及气象学]