| 气候变化背景下北极海冰对我国冬季气温的影响研究 |
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| 引用本文： | 肖莺,任永建,杜良敏.气候变化背景下北极海冰对我国冬季气温的影响研究[J].极地研究,2018,30(1):14-21. |
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| 作者姓名： | 肖莺 任永建 杜良敏 |
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| 作者单位： | 武汉区域气候中心, 湖北 武汉 430074 |
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| 基金项目： | 国家重点基础研究发展计划(973 计划)(2015CB953904)、湖北省气象局重点基金项目(2017Z03)、湖北省气象局年轻
科技人员专项(2017Q05)资助 |
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| 摘 要： | 利用1961—2015年中国冬季气温资料、中国气象局逐月北极海冰密集度指数资料和美国国家海洋和大气管理局(NCEP/NCAR)环流资料,采用滑动相关、时滞相关及偏相关等分析方法,探讨了秋季北极海冰对中国冬季气温的影响。结果表明,秋季北极海冰改变了后期冬季西西伯利亚高压和华北高压强弱,导致我国西北地区和长江与黄河之间地区冬季气温异常。进一步分析发现,西北地区冬季气温的异常主要是受西西伯利亚高压影响,而长江与黄河之间冬季气温的异常主要是受华北高压影响。而秋季北极海冰通过改变后期冬季欧亚中高纬度环流,进一步影响高原地区冬季气温。
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| 关 键 词： | 北极海冰 暖背景 时间尺度 区域差异 |
| 收稿时间： | 2017-02-14 |
Effects of Arctic Sea ice on winter temperature in China under climate change |
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| Xiao Ying,Ren Yongjian,Du Liangmin.Effects of Arctic Sea ice on winter temperature in China under climate change[J].Chinese Journal of Polar Research,2018,30(1):14-21. |
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| Authors: | Xiao Ying Ren Yongjian Du Liangmin |
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| Abstract: | This study used Chinese winter temperature data, the monthly Arctic sea ice concentration index from
the China Meteorological Bureau, and NCEP/NCAR circulation reanalysis data to investigate the effects of
Arctic sea ice on winter temperatures in China using sliding, time-delay, and partial correlation analyses.
The results showed that Arctic sea ice concentration in autumn was correlated with high pressure in West
Siberia in late winter and high pressure in North China, which were responsible for winter temperature
anomalies in northwestern China and between the Yangtze River and the Yellow River. Further analysis
found that the winter temperature anomalies in the northwestern region were affected mainly by high pressure
over West Siberia, while the winter temperature anomalies between the Yangtze River and the Yellow
River were affected mainly by high pressure in North China. The influence of Arctic sea ice on the
late-winter high-latitude Eurasian circulation further affected winter temperatures on the plateau. |
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| Keywords: | Arctic sea ice warm timescale regional difference |
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