1961-2015年阜新地区气候变化特征

doi:10.3969/j.issn.1673-503X.2017.04.008

Abstract

Abstract: The long-term trend changes of meteorological factors including mean air temperature,maximum and minimum air temperature,precipitation,sunshine duration and wind speed and their significances in Fuxin during 1961-2015 were analyzed using moving average and trend analysis methods.At the same time,abrupt climate change features of above-mentioned meteorological factors were investigated with Mann-Kendall method.Results show that annual mean air temperature (AMAT),annual mean maximum (AMAXAT) and minimum air temperature (AMINAT) have all increased in recent 55 years in Fuxin.The increasing trend of AMINAT is the most significant while the increasing magnitude of AMXAT is smallest among all climate factors related to air temperature.However,it comes into an obvious warming period when AMAT and AMINAT rise significantly after experiencing abrupt climate change in 1991 and 1975 respectively.Specifically,air temperature ascends most significantly in winter and most slowly in summer.Furthermore,it is the 10 years i.e.from 2001 to 2010 that is the period with the highest air temperature while air temperature in winter is the lowest during 1960s-1970s among the 55 years.As far as precipitation is concerned,it has experienced a decreasing trend in recent 55 years and enters a rainless period after an obvious abrupt change occurring in 1996.At the same time,it significantly decreases in summer and autumn and slightly increases in spring and winter.In addition,sunshine duration shows a declining trend during the past 55 years and enters a period of less sunshine after an abrupt variation of sunshine duration in 1976.Besides,wind speed indicates a descending trend in the studied area during the 55 years and reduces obviously after an abrupt climate change occurring in 1978.In conclusion,this research will provide a reference for applying climate resource scientifically and effectively and adjusting agricultural planting structure reasonably as well as promoting agricultural development and environmental improvement in Fuxin.

Key words: Climate tendency rate, Moving average, Mann-Kendall test

CLC Number:

S161

SUN Bao-li, SUN Feng-hua, SUN Ke, CAO Ming-shu, YANG Xiao-tong, ZHANG Jian-guo. Characteristics of climate change in Fuxin during 1961-2015[J]. Journal of Meteorology and Environment, 2017, 33(4): 64-70.

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http://www.jme1984.net.cn/EN/Y2017/V33/I4/64

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Characteristics of climate change in Fuxin during 1961-2015

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