南极中山站和长城站日照时数的气候变化特征及其影响因素  

Climatic Variation Characteristics and Influencing Factors of Sunshine Duration at Zhongshan Station and Great Wall Station in Antarctica

作　　者：武维刚 董剑 孟凡镭 WU Weigang;DONG Jian;MENG Fanlei(Huashan Meteorological Station,Huayin 714200,China;College of Atmospheric Sciences,Chengdu University of Information Technology,Chengdu 610225,China;Wutaishan Meteorological Station,Xinzhou 035515,China)

机构地区：[1]华山气象站,陕西华阴714200 [2]成都信息工程大学大气科学学院,四川成都610225 [3]五台山气象站,山西忻州035515

出　　处：《成都信息工程大学学报》2022年第4期464-469,共6页Journal of Chengdu University of Information Technology

基　　金：陕西省气象局重点实验室面上基金资助项目(2021k-4)。

摘　　要：为研究南极日照的气候特征和变化趋势,利用1990-2020年南极中山站和1988-2020年长城站逐年、月日照、云量等地面气象观测资料,运用线性趋势分析、Mann-Kendall检验和Morlet小波分析等方法,分析日照时数的气候变化特征和影响因子。结果表明:中山站和长城站日照时数年际变化呈波动上升趋势,但变化趋势不显著。中山站和长城站年日照时数都存在33 a左右的长周期变化,同时中山站2 a和长城站6 a左右的短周期变化也比较明显。中山站春、秋、冬季日照时数呈增加趋势,8月日照时数增加趋势最为显著。长城站夏、秋、冬季日照时数呈增加趋势,4月日照时数增加趋势最为显著。云量是影响中山站和长城站日照时数变化的重要因素之一,日照时数增加与总云量减少有密切关系。In order to study the climatic characteristics and variation trend of Antarctic sunshine,based on the annual,monthly sunshine and cloud cover data of Zhongshan Station in Antarctica from 1990 to 2020 and Great Wall Station from 1988 to 2020,the climatic change characteristics and influencing factors of sunshine hours were analyzed by means of linear trend analysis,Mann-Kendall test and Morlet wavelet analysis.The results show that the interannual variation of sunshine duration at Zhongshan station and Great Wall station shows a fluctuating upward trend,but the variation trend is not significant.The annual sunshine duration at Zhongshan station and Great Wall station has a long period change of about 33 years,and it is obvious that the short period changes of about 2 years at Zhongshan station and 6 years at Great Wall station.At Zhongshan station,the sunshine duration increases in spring,autumn and winter,and the sunshine duration increases most significantly in August.The sunshine duration of Great Wall Station increases in summer,autumn and winter,and the increasing trend is the most significant in April.Cloud cover is one of the important factors affecting sunshine duration at Zhongshan station and Great Wall Station,and the increase of sunshine duration is closely related to the decrease of total cloud cover.

关 键 词：大气科学 气候变化 日照时数 南极 中山站 长城站 

分 类 号：P467[天文地球—大气科学及气象学]