摘要
[目的]分析四川50年来平均气温的变化特征。[方法]利用四川省156个台站1961～2010年的平均气温资料,分析了四川50年来平均气温的年际和年代际演变特征及区域和季节差异。[结果]50年来,全省及各气候区平均气温变化总体呈升高趋势。21世纪前10年的平均气温升幅明显,全省48.7%的台站升温幅度为0～0.5℃,32.3%的台站升温幅度为0.5～1.0℃。冬季升温幅度最大,春季次之,秋季最小。50年来,全省累年年平均气温空间分布呈东高西低,区域差异为-1.2～20.9℃,温差达22.1℃。全省1961～1997年平均气温年际变化比较平稳,之后呈比较明显的波动式升温趋势。全省60～90年代平均气温的年代际变化相对平稳,为8.56～8.86℃。全省及各气候区年代际平均气温的最高值均出现在21世纪前10年,但最低值出现的年代有所不同。[结论]该研究为分析四川省气候变化特征提供了参考。
[Objective] The research aimed to analyze change characteristics of average temperature in Sichuan in 50 years.[Method] By using the average temperature data at 156 stations of Sichuan during 1961-2010,the interannual and interdecadal evolution characteristics,regional and seasonal differences of average temperature in Sichuan in 50 years were analyzed.[Result] The variations of average temperatures in the whole province and each climatic region in 50 years overall presented rise trend.The rise amplitude of average temperature was obvious in prior 10 years of the 21st century.The rise amplitude of temperature was during 0-0.5 ℃ in 48.7% of stations in the whole province,and was during 0.5-1.0 ℃ in 32.3% of stations.The rise amplitude of temperature was the maximum in winter.The second one was in spring,and the minimum was in autumn.The annual average temperature year after year in the whole province in 50 years presented east-high-west-low distribution.The regional difference was from-1.2 to 20.9 ℃,the temperature difference was 22.1 ℃.The interannual variation of average temperature from 1961 to 1997 in the whole province was relatively stable.After that,it presented obvious fluctuation rise trend.The interdecadal variation of average temperature from the 1960s to the 1990s was relatively stable and during 8.56-8.86 ℃.The maximum interdecadal average temperatures in the whole province and each climatic region all emerged in prior 10 years of the 21st century,while the emergence decades of minimum values were different.[Conclusion] The research provided reference for analyzing climatic change characteristics in Sichuan.
出处
《安徽农业科学》
CAS
2012年第4期2251-2254,共4页
Journal of Anhui Agricultural Sciences
关键词
四川
平均气温
变化特征
Sichuan
Average temperature
Change characteristics
