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DOI | 10.1002/joc.5024 |
The relationship between wintertime extreme temperature events north of 60 degrees N and large-scale atmospheric circulations | |
Yu, Lejiang1,2; Sui, Cuijuan3; Lenschow, Donald H.4; Zhou, Mingyu1,3 | |
2017-08-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | The increased extremewarm and decreased extreme cold temperature events across the Arctic strongly influence the natural environment as well as the societal activities. This study investigates temporal and spatial variability of wintertime extreme high and low temperature events defined by the 95 and 5% percentiles across the Arctic and subarctic regions, respectively (north of 60 degrees N) using data from 238 stations in the Global Summary of the Day for the period 1979-2016. Empirical orthogonal function analyses indicate that the first modes (which account for 30-35% of the total variance) are out-of-phase between northern Europe, western and central Russia, and northeastern North America, and that this appears to be related to the Arctic Oscillation (AO) and the Northern Atlantic Oscillation. The second modes explain about 8% of the total variance. During the positive phase of the first and second modes the anomalous northeasterly and northerly winds decrease Arctic extreme high and increase extreme low temperature occurrences; while the anomalous southerly and southwesterly winds have the opposite effect. Symmetric and asymmetric effects of the AO index on extreme temperature events refer to the difference and sum between the composite of its positive and negative phases. The symmetric components of the spatial patterns are similar to those of the first modes. The asymmetric components occur mainly over western and central Russia for extreme high and low temperatures, respectively. In addition the impacts of six other large-scale climate modes are also explored. |
英文关键词 | Arctic extreme temperature events Arctic Oscillation Pacific North America pattern asymmetric impact |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000417298600041 |
WOS关键词 | LA-NINA ; EL-NINO ; PRECIPITATION ; TELECONNECTIONS ; TRENDS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/37270 |
专题 | 气候变化 |
作者单位 | 1.Polar Res Inst China, Shanghai, Peoples R China; 2.State Ocean Adm, Key Lab Polar Sci, Shanghai, Peoples R China; 3.Natl Marine Environm Forecasting Ctr, Beijing, Peoples R China; 4.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Yu, Lejiang,Sui, Cuijuan,Lenschow, Donald H.,et al. The relationship between wintertime extreme temperature events north of 60 degrees N and large-scale atmospheric circulations[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37. |
APA | Yu, Lejiang,Sui, Cuijuan,Lenschow, Donald H.,&Zhou, Mingyu.(2017).The relationship between wintertime extreme temperature events north of 60 degrees N and large-scale atmospheric circulations.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37. |
MLA | Yu, Lejiang,et al."The relationship between wintertime extreme temperature events north of 60 degrees N and large-scale atmospheric circulations".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37(2017). |
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