Cold winter extremes in northern continents linked to Arctic sea ice loss
文献类型：SCI/SSCI论文
| 作者 | Tang Q. H. ; Zhang X. J. ; Yang X. H. ; Francis J. A. |
| 发表日期 | 2013 |
| 关键词 | Arctic sea ice cold winter extreme northern continents cover association circulation patterns blocking impacts trends |
| 英文摘要 | The satellite record since 1979 shows downward trends in Arctic sea ice extent in all months, which are smallest in winter and largest in September. Previous studies have linked changes in winter atmospheric circulation, anomalously cold extremes and large snowfalls in mid-latitudes to rapid decline of Arctic sea ice in the preceding autumn. Using observational analyses, we show that the winter atmospheric circulation change and cold extremes are also associated with winter sea ice reduction through an apparently distinct mechanism from those related to autumn sea ice loss. Associated with winter sea ice reduction, a high-pressure anomaly prevails over the subarctic, which in part results from fewer cyclones owing to a weakened gradient in sea surface temperature and lower baroclinicity over sparse sea ice. The results suggest that the winter atmospheric circulation at high northern latitudes associated with Arctic sea ice loss, especially in the winter, favors the occurrence of cold winter extremes at middle latitudes of the northern continents. |
| 出处 | Environmental Research Letters |
| 卷 | 8 |
| 期 | 1 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1748-9326 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30236]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Tang Q. H.,Zhang X. J.,Yang X. H.,et al. Cold winter extremes in northern continents linked to Arctic sea ice loss. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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