违反了 PRIMARY KEY 约束 'PK_t_counter'。不能在对象 'dbo.t_counter' 中插入重复键。 语句已终止。 欧亚大陆冬季地表温度南北反相变化的年代际特征及机理-Interdecadal Variations and Mechanisms of the Seesaw pattern for Winter Surface Temperature between the Northern and the Southern Eurasia
doi:  10.3878/j.issn.1006-9585. 2017.17059
欧亚大陆冬季地表温度南北反相变化的年代际特征及机理

Interdecadal Variations and Mechanisms of the Seesaw pattern for Winter Surface Temperature between the Northern and the Southern Eurasia
摘要点击 66  全文点击 23  投稿时间:2017-03-31  最后修改时间:2017-06-30
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基金:  国家自然科学基金 公益性行业(气象)科研专项(重大专项)
中文关键词:  冬季地表温度  年际和年代际变化 大气环流形势  海冰 海温
英文关键词:  Winter  surface temperature, Interdecadal  and interannual  variation, General  circulation pattern, Sea  ice extent, SST
        
作者中文名作者英文名单位
李一玲LI Yiling兰州大学大气科学学院
王澄海WANG Chenghai兰州大学大气科学学院
张飞民ZhANG Feimin兰州大学大气科学学院
引用:李一玲,王澄海,张飞民.2017.欧亚大陆冬季地表温度南北反相变化的年代际特征及机理[J].气候与环境研究
Citation:LI Yiling,WANG Chenghai,ZhANG Feimin.2017.Interdecadal Variations and Mechanisms of the Seesaw pattern for Winter Surface Temperature between the Northern and the Southern Eurasia[J].Climatic and Environmental Research(in Chinese)
中文摘要:
      本文分析了欧亚大陆冬季地表温度南北反相的时空分布特征及机理。结果表明,欧亚大陆冬季地表温度约以55°N为界存在南北反相变化特征。1961-2015年欧亚大陆冬季地表温度变化具有显著的年际和年代际变化特征;年代际尺度上,北半球行星波“冬三”分布型变化与欧亚大陆地表温度南北反相变化密切联系。冬季欧亚地表温度南北反相变化存在明显的季节内转变。滤除年代际信号和全球变暖趋势后,欧亚大陆冬季地表温度与秋季北极海冰面积之间存在显著相关;北极海冰面积减小是欧亚、尤其中亚地区冬季地表温度降低的主要外强迫因素之一;同期北大西洋“三极子”和欧亚大陆冬季地表温度南北反相变化在年际尺度上存在显著相关。
Abstract:
      This paper analyzes the characteristics and mechanism of the spatial and temporal of the seesaw pattern for winter surface temperature between the northern and the southern Eurasian. Results show that, the seesaw pattern of winter surface temperature between the northern Eurasian and the southern Eurasian is evident with the boundary at about 55° N. Besides, the interannual and interdecadal variations of winter surface temperature over Eurasian are also significant during 1961-2015. In the interdecadal scale, planetary wave in the Northern Hemisphere such as “Three Troughs/Ridges in winter” has closed contact with the seesaw pattern. In addition, such seesaw pattern in the interdecadal scale also has obvious transition feature in seasonal scales; Results with the removal of the interdecadal signals and global warming indicate that, winter surface temperature of Eurasia has a significant correlation with the Arctic sea ice extent in autumn.The decrease of Arctic sea ice extent is one of the main external forcing factors caused decrease of winter surface temperature in Eurasia , especially in Central Asia. Further results show that, in interannual time scale, the seesaw pattern has a significant correlation with the synchronous sea surface temperature with “three-pole” structure in the North Atlantic Ocean.
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