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Impact of sea ice decline in the Arctic Ocean on the number of extreme low-temperature days over China

文献类型： 外文期刊

作者： Ge, Feifan 1 ; Yan, Tao 1 ; Zhou, Lu 3 ; Jiang, Yuelin 1 ; Li, Wei 1 ; Fan, Yufen 2 ; Wang, Yishu 4 ; Mao, Kebiao 5 ; Wu, We 1 ;

作者机构： 1.Anhui Agr Univ, Sch Resources & Environm, 130,Changjiang West Rd, Hefei 230036, Anhui, Peoples R China

2.Tongxiang Meteorol Bur, Zhejiang, Tongxiang, Peoples R China

3.Tsinghua Univ, Dept Earth Syst Sci, Key Lab Earth Syst Modeling, Minist Educ, Beijing, Peoples R China

4.Quzhou Meteorol Bur, Quzhou, Zhejiang, Peoples R China

5.Chinese Acad Agr Sci, Natl Hulunber Grassland Ecosystem Observat & Res, Inst Agr Resources & Reg Planning, Beijing, Peoples R China

6.Anhui Acad Agr Sci, Hefei, Anhui, Peoples R China

关键词： Arctic; China; extreme low-temperature days; sea ice concentration; winter

期刊名称：INTERNATIONAL JOURNAL OF CLIMATOLOGY （ 影响因子：4.069； 五年影响因子：5.08 ）

ISSN： 0899-8418

年卷期：

页码：

收录情况： SCI

摘要： The variation in the number of extreme low-temperature days (NELD) during winter over China is examined. The NELD mainly has a significant decreasing trend across China. The leading NELD empirical orthogonal function (EOF) mode also shows consistent change characteristics over China, and a Mann-Kendall (MK) test of its time coefficients indicates that the NELD abruptly changed in approximately 1980. The impact of sea ice concentrations in the Arctic Ocean on the NELD is investigated. Sea ice concentration declines in the Barents Sea and the sea east of Greenland have significant negative effects on the NELD. Sea surface temperatures in these regions are negatively correlated with the NELD. The study analyses the influence mechanism by researching the composite atmosphere variable anomalies between years with below-normal NELD and those with above-normal NELD.

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