武义县气候舒适度变化及未来趋势分析

Variation Characteristics and Future Trend Analysis of Climate Comfort in Wuyi

基于1981-2017年武义县逐日气温、相对湿度、风速、日照的观测资料,计算了温湿指数、风效指数、着衣指数、人体舒适度气象指数四个气候舒适度相关的综合性指标。结果表明:(1)武义县气候舒适度全年较适宜。夏、冬季舒适等级低,舒适日数较少;春、秋季舒适等级高,舒适日数较多。(2)过去的37 a中,气候往更加适宜方向发展,舒适日数逐渐增多。(3)每年气候舒适时段为3月18日~6月16日(共91 d)与9月5日~11月21日(共78d);最舒适时段为4月7日~5月31日(共48 d)与9月25日~11月10日(共46 d)。(4) R/S分析揭示出武义县未来的舒适度指数值(日数)仍将继续当前的趋势朝舒适偏暖(增多)方向发展。

Using the daily observations of temperature,relative humidity,wind speed and sunshine hours in Wuyi during 1981—2017,the variation characteristics and future trend of climate comfort,including temperature humidity index(THI),wind effect index(K),index of clothing(ICL),body comfort meteorology index(BCMI),were analyzed.Results are as follows:(1)In general,the climate is relatively stable,and the climate comfort is quite appropriate throughout the whole year.However.,seasonal differences of climate comfort exist,that is,low level of comfort and less comfortable days In summer and winter,whilst high level and more days in spring and autumn.(2)For the past 37 years,the overall climate gradually evolved in a more appropriate direction along with increased comfortable days.(3)In combination of the four indexes,the annual climate comfort period includes March 18—June 16(91 days)and September 5—November 21(78 days).The most comfortable period are April7—May 31(48 days)and September 25-November 10(46 days).(4)R/S analysis reveals that the climate comfort has a long term correlation,in other words,the comfort index will keep the current trend and will be more comfortable but warmer in the future.