峨眉山1951—2023年气候变化分析

Analysis of Climate Change at Mount Emei from 1951 to 2023

  • 摘要: 利用峨眉山基准气候站1951—2023年气温、降水和风向风速数据,研究了峨眉山的气候变化特征。结果表明:(1)峨眉山平均气温、极端最高和极端最低气温呈现上升趋势,秋季增暖速度最快,极端最低气温对气候变化更加敏感;(2)峨眉山年降水量总体呈显著下降趋势,但春季降水量呈微弱上升趋势,夏季降水量远大于其余季节;(3)峨眉山风速整体呈现下降趋势,但东风呈现微弱的上升趋势;(4)峨眉山1953—1981年主导风为东南风,此后主导风向发生了明显变化。

     

    Abstract: Focusing on temperature, precipitation, wind direction and wind speed, the climatic changes at Mount Emei National Reference Climatological Station from 1951 to 2023 are investigated. The results show that: (1) An upward trend in average temperatures, as well as extreme maximum and minimum temperatures, with autumn exhibiting the most rapid warming rate, extreme minimum temperatures at Mount Emei become more sensitive to climate change. (2) Annual precipitation shows a significant decreasing trend overall, though spring precipitation displays a slight increase. Summer precipitation substantially exceeds that of other seasons. (3) Wind speeds generally exhibit a declining trend, while easterly winds show a slight increasing tendency. (4) The dominant wind direction at Mount Emei was southeasterly during 1953—1981, followed by a notable shift in prevailing winds thereafter.

     

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