Long-term characteristics of multi-time-scale fluctuation amplitude of temperature in the past six decades in Taihu Basin

摘要：
太湖流域是我国重要的经济发展区域,为研究太湖流域气温波动的长期变化特征,利用近60年来太湖流域10个气象站的逐日气温资料:日最高气温(MaxT)、日平均气温(MeanT)、日最低气温(MinT),运用均方根(root-mean-square,RMS)方法分析了太湖流域年、季、月3个尺度上气温波动幅度的长期变化特征,并以1990年为分界,研究了20世纪90年代前后波动趋势的变化和区别.结果表明:1)年尺度上,1958-1990年气温年内波动幅度呈微弱降低趋势,而1990-2018年气温年内波动幅度呈显著增加趋势.2)季节尺度上,1958-1990年春季和冬季气温波动幅度趋势呈下降趋势、夏季气温波动幅度呈上升趋势而春季和冬季气温波动幅度趋势呈上升趋势.3)月尺度上,1990-2018年太湖流域各月份的气温波动幅度均呈上升趋势,但1月和4月要比其他月份波动幅度上升趋势明显.4)空间上,1958-1990年流域内气温波动幅度整体呈下降趋势,由东向西波动幅度下降趋势增大;1990-2018年,流域内气温波动幅度整体呈增长趋势,从南至北呈波动幅度增长趋势变大.

Taihu Basin is an important economic development area in China with strong human activities,to study the long-term change characteristics of temperature fluctuations in the Taihu basin,this paper uses the day-by-day temperature data(daily maximum temperature(MaxT),daily mean temperature(MeanT),and daily minimum temperature(MinT))from 10 meteorological stations in the Taihu basin from 1958 to 2018,and uses root-mean-square(RMS)to analyze the long-term characteristics of temperature fluctuations in the Taihu basin in the last 60 years,seasons and months were analyzed by using root-mean-square(RMS),and the changes and differences of fluctuation trends before and after 1990s were studied with 1990 as the dividing line.The results showed that:1)on the annual scale,the intra-annual fluctuation of temperature from 1958 to 1990 showed a weak decreasing trend,while the intra-annual fluctuation of temperature from 1990 to 2018 showed a significant increasing trend.2)On the seasonal scale,the temperature fluctuations in spring and winter from 1958 to 1990 showed a decreasing trend,the temperature fluctuations in summer showed an increasing trend,and the temperature fluctuations in spring and winter showed an increasing trend.3)On the monthly scale,the temperature fluctuations in each month in Taihu Basin from 1990 to 2018 showed an increasing trend,but the fluctuations in January and April showed a significant increasing trend than the other months.4)Spatially,the overall temperature fluctuations in the basin from 1958 to 1990 showed a decreasing trend,and the decreasing trend of fluctuations from east to west increased;from 1990 to 2018,the overall temperature fluctuations in the basin showed an increasing trend,and the increasing trend of fluctuations from south to north became larger.

作者：
何昶 邓建明 李雪纯 王毛兰

He Chang;Deng Jianming;Li Xuechun;Wang Maolan(School of Resources&Environment,Key Laboratory of Poyang Lake Environment and Resource Utilization,Ministry of Education,Nanchang University,Nanchang 330031,China;Nanjing Institute of Geography&Limnology,Chinese Academy of Sciences,Nanjing 210008,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Science,Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：
南昌大学资源与环境学院 中国科学院南京地理与湖泊研究所 南京水利科学研究院水文水资源与水利工程科学国家重点实验室

出处：
《betway官方app 学报：自然科学版》 CAS 北大核心 2022年第6期130-137,I0007,共9页

Journal of Henan Normal University(Natural Science Edition)

基金：
国家自然科学基金(41663004 41071146)。

关键词：
太湖流域 短期气温波动 RMS分析 长期变化特征

Taihu Basin short-term temperature fluctuations RMS analysis long-term change characteristics

分类号：
P423.3 [天文地球—大气科学及气象学]

太湖流域近60年气温多时间尺度波动幅度的长期变化特征.pdf