1982-2015年内蒙古高原极端气候指数的时空变化研究
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摘要
文章基于1982-2015年内蒙古高原地区116个气象站点的逐日气象资料,应用一元线性回归趋势法,对内蒙古高原极端气候事件的时空变化进行了分析。研究结果发现,1982-2015年,内蒙古高原95%以上地区的冷指数有大幅度的下降趋势。暖夜日数的增长趋势比暖昼日数的增长更为明显,且98%以上地区的暖指数均呈上升趋势。极端降水量指数呈微弱的下降趋势,其在东部大部分地区呈下降趋势,而在中西部大部分地区呈增加趋势。
Based on the daily meteorological data of 116 meteorological stations in Inner Mongolia Plateau from 1982 to 2015,the temporal and spatial variations of extreme climatic events in this place are analyzed using the method of linear regression trend.The results show that the cold index of more than 95% of the Inner Mongolia Plateau has a large downward trend from 1982 to2015. The increasing trend of the number of warm nights is more obvious than that of the number of warm days, and the warm index in more than 98% areas shows an upward trend. The extreme precipitation index showed a weak downward trend: in most of the eastern region, it showed a downward trend, while in most of the central and western regions it showed an increasing trend.
Based on the daily meteorological data of 116 meteorological stations in Inner Mongolia Plateau from 1982 to 2015,the temporal and spatial variations of extreme climatic events in this place are analyzed using the method of linear regression trend.The results show that the cold index of more than 95% of the Inner Mongolia Plateau has a large downward trend from 1982 to2015. The increasing trend of the number of warm nights is more obvious than that of the number of warm days, and the warm index in more than 98% areas shows an upward trend. The extreme precipitation index showed a weak downward trend: in most of the eastern region, it showed a downward trend, while in most of the central and western regions it showed an increasing trend.
引文
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[3]胡宜昌,董文杰,何勇.21世纪初极端天气气候事件研究进展[J].地球科学进展,2007,22(10):1066-1075.
[4]ZHANG X,AGUILAR E,SENSOY S等.Trends in Middle East climate extreme indices from 1950 to 2003[J].Journal of Geophysical Research Atmospheres,2005,110(D22):3159-3172.