1961—2008年淮河流域氣溫和降水變化趨勢

doi:10.3969/2012jms.0061

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1961—2008年淮河流域氣溫和降水變化趨勢
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                        10.3969/2012jms.0061
                    
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基金項目:中國氣象局氣候變化專項(CCSF201222)

Change trend of temperature and precipitation in Huaihe River Basin from 1961 to 2008

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利用淮河流域170個地面氣象觀測站觀測數(shù)據(jù),統(tǒng)計分析了淮河流域1961—2008年間氣溫和降水的時空變化趨勢。結(jié)果表明:48 a間淮河流域年平均氣溫呈顯著上升趨勢,冬季平均氣溫的增溫幅度最大,春、秋次之;年極端最低氣溫亦呈顯著上升趨勢,年極端低溫日數(shù)(滿足該站極端低溫閾值)則呈明顯下降趨勢;流域西北部年極端最高氣溫呈顯著下降趨勢,流域西部年極端高溫日數(shù)(滿足該站極端高溫閾值)呈顯著下降趨勢;降水量總體變化趨勢未通過統(tǒng)計檢驗,但1990s開始,秋季降水量呈下降趨勢,2000年之后年降水量明顯增加,夏季降水量亦增加;春季和秋季降水日數(shù)呈顯著下降趨勢,夏季和冬季無明顯變化。

Abstract:

Using the observed data from 170 meteorological stations in the area of Huaihe River Basin, we analyzed the changing trend of temperature and precipitation in Huaihe River Basin from 1961 to 2008. The results show that during the 48 a, the average temperature had a significant increasing trend in Huaihe River Basin, the average temperature in winter had the largest increment while the average temperature in spring and autumn had the second largest increment. The extreme low temperature over one year also had an increasing trend, but its frequency decreased significantly. The extreme high temperature in the west part of the basin had a significant decreasing trend and its frequency decreased over the year as well. The trend of the variance of the overall precipitation had not yet been tested, but started from the 1990s, the precipitation during autumn had a decreasing trend, but after 2000 the precipitation had been increasing significantly, as well as the precipitation during summer. The precipitation days during spring and autumn had a decreasing trend, while they did not change too much during winter and summer.

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王珂清,曾燕,謝志清,苗茜.1961—2008年淮河流域氣溫和降水變化趨勢.氣象科學,2012,32(6):671-677 WANG Keqing, ZENG Yan, XIE Zhiqing, MIAO Qian. Change trend of temperature and precipitation in Huaihe River Basin from 1961 to 2008. Journal of the Meteorological Sciences,2012,32(6):671-677

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收稿日期:2011-07-08
最后修改日期:2012-05-02
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在線發(fā)布日期: 2013-01-05
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