1961—2017年岳阳人体舒适度变化特征  

Variation Characteristics of Human Comfort Index in Yueyang City in 1961—2017

作　　者：桑友伟[1] 孟蕾[1] Sang Youwei;Meng Lei(Hunan Branch of China Meteorological Administration Training Centre,Changsha 410125,China)

机构地区：[1]中国气象局气象干部培训学院湖南分院

出　　处：《气象与环境科学》2020年第1期52-58,共7页Meteorological and Environmental Sciences

基　　金：湖南省气象局2018年重点课题(XQKJ18A004)

摘　　要：利用1961-2017年岳阳市国家气象观测站日平均气温、日平均相对湿度和日平均风速资料计算逐日人体舒适度指数,并采用线性倾向估计方法、Mann-Kendall趋势检验及小波分析法分析年平均指数和各等级日数的变化特征。结果表明:19612017年岳阳舒适日数最多,冷不舒适日数次之,热不舒适日数最少;岳阳较舒适的月份是5月和10月,最热不舒适的月份是7月和8月,最冷不舒适的月份是1月;近57年来岳阳人体舒适度指数数值显著上升,主要原因是受到冷不舒适日数减少、舒适日数和热不舒适日数增多等因素共同影响;各月份不同级别日数发生了较大的变化,冷不舒适日数减少、舒适日数增多的变化在3月最明显,舒适日数减少、热不舒适日数增加的变化在7月最明显;岳阳春、秋、冬三季越来越暖,而夏季变得更热;岳阳人体舒适度各级别日数呈现出显著的周期变化,1991年冬季至1992年是岳阳人体舒适度发生突变的时间段;未来几年中岳阳冷不舒适日数将会比2017年的增加,热不舒适日数会先增加后减少,舒适日数将会减少。Daily human comfort index is calculated in this paper by using the 19612017 daily average temperature,daily average relative humidity and daily average wind speed data from the Yueyang National Meteorological Station,and the variation characteristics of annual average human comfort index and days at each level are analyzed by the methods of linear tendency estimation,Mann-Kendall trend test and wavelet analysis.The results show that,from 1961 to 2017,the comfortable days in Yueyang are the most,followed by cold uncomfortable days,and the hot uncomfortable days are the least.The comfortable months in Yueyang are May and October,the hottest uncomfortable months are July and August,and the coldest uncomfortable month is January.In the past 57 years,the value of human comfort index in Yueyang has increased significantly,which is mainly caused by the combination of factors such as the decrease of cold uncomfortable days,the increase of comfortable days and the increase of thermal uncomfortable days.The number of human comfort days at different levels in each month has changed greatly.The decrease of cold uncomfortable days and increase of comfortable days are found most obviously in March while the decrease of comfortable days and increase of thermal uncomfortable days are in July.In Yueyang,it has become warmer and warmer in spring,autumn and winter,and much hotter in summer.The number of days at different levels of human comfort presents a significant periodic variation,and an abrupt change occurred in the period from winter 1991 to 1992.In the coming years,the number of uncomfortable cold days in Yueyang is expected to increase compared with that in 2017,the number of hot uncomfortable days is to increase first and then decrease,and the number of comfortable days to decrease.

关 键 词：舒适度 MANN-KENDALL检验 小波分析 

分 类 号：P49[天文地球—大气科学及气象学]