Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-17-0386.1 |
On the Drivers of Wintertime Temperature Extremes in the High Arctic | |
Messori, Gabriele1; Woods, Cian; Caballero, Rodrigo | |
2018-02-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:4页码:1597-1618 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden |
英文摘要 | The salient features and drivers of wintertime warm and cold spells in the high Arctic are investigated. The analysis is based on the European Centre for Medium-Range Weather Forecasts interim reanalysis dataset. It is found that the warm spells are systematically associated with an intense sea level pressure and geopotential height anomaly dipole, displaying a low over the Arctic basin and a high over northern Eurasia. This configuration creates a natural pathway for extreme moisture influx episodes from the Atlantic sector into the Arctic (herein termed moisture intrusions). Anomalous cyclone frequency at the pole (largely attributable to local cyclogenesis) then favors a deep penetration of these intrusions across the Arctic basin. The large-scale circulation pattern associated with the warm spells further favors the advection of cold air across Siberia, leading to the so-called warm Arctic-cold Eurasia pattern previously discussed in the literature. On the contrary, cold Arctic extremes are associated with a severely reduced frequency of moisture intrusions and a persistent low pressure system over the pole. This effectively isolates the high latitudes from midlatitude air masses, favoring an intense radiative cooling of the polar region. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425166600017 |
WOS关键词 | SEA-ICE ; MIDLATITUDE WEATHER ; TROPICAL CONVECTION ; MOISTURE TRANSPORT ; WARMING MECHANISM ; ENERGY-TRANSPORT ; COLD WINTERS ; AMPLIFICATION ; VARIABILITY ; IMPACT |
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/20727 |
专题 | 气候变化 |
作者单位 | 1.Stockholm Univ, Dept Meteorol, Stockholm, Sweden; 2.Stockholm Univ, Bolin Ctr Climate Res, Stockholm, Sweden |
推荐引用方式 GB/T 7714 | Messori, Gabriele,Woods, Cian,Caballero, Rodrigo. On the Drivers of Wintertime Temperature Extremes in the High Arctic[J]. JOURNAL OF CLIMATE,2018,31(4):1597-1618. |
APA | Messori, Gabriele,Woods, Cian,&Caballero, Rodrigo.(2018).On the Drivers of Wintertime Temperature Extremes in the High Arctic.JOURNAL OF CLIMATE,31(4),1597-1618. |
MLA | Messori, Gabriele,et al."On the Drivers of Wintertime Temperature Extremes in the High Arctic".JOURNAL OF CLIMATE 31.4(2018):1597-1618. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论