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DOI | 10.1002/2017GL075136 |
A Midwinter Minimum in North Atlantic Storm Track Intensity in Years of a Strong Jet | |
Afargan, H.; Kaspi, Y. | |
2017-12-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:24 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel |
英文摘要 | This study investigates the occurrence of a midwinter suppression in synoptic eddy activity within the North Atlantic storm track. It is found that eddy kinetic energy over the Atlantic is reduced during winter relative to fall and spring, despite the stronger wintertime jet and enhanced baroclinicity. This behavior is similar to the well-known Pacific midwinter minimum, yet the reduction over the Atlantic is smaller and persists for a shorter period. To examine the conditions favorable for this phenomenon, we present an analysis of years with stronger jet intensity versus years of weaker jets over the Atlantic and Pacific basins. When the wintertime jet is stronger, the midwinter suppression of eddy activity is more pronounced, and the jet is more equatorward. Since the climatological Atlantic jet is weaker relative to the Pacific jet, the conditions for a midwinter suppression in the Atlantic are generally less favorable, yet a midwinter suppression often occurs in years of a strong jet. |
英文关键词 | storm track atmospheric dynamics seasonal variability subtropical jet eddy kinetic energy midwinter minimum |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000422954700002 |
WOS关键词 | EDDY ACTIVITY ; PACIFIC ; SUPPRESSION ; VARIABILITY ; HEMISPHERE ; GCM ; BAROCLINICITY ; OSCILLATION ; CIRCULATION ; GROWTH |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/26469 |
专题 | 气候变化 |
作者单位 | Weizmann Inst Sci, Dept Earth & Planetary Sci, Rehovot, Israel |
推荐引用方式 GB/T 7714 | Afargan, H.,Kaspi, Y.. A Midwinter Minimum in North Atlantic Storm Track Intensity in Years of a Strong Jet[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(24). |
APA | Afargan, H.,&Kaspi, Y..(2017).A Midwinter Minimum in North Atlantic Storm Track Intensity in Years of a Strong Jet.GEOPHYSICAL RESEARCH LETTERS,44(24). |
MLA | Afargan, H.,et al."A Midwinter Minimum in North Atlantic Storm Track Intensity in Years of a Strong Jet".GEOPHYSICAL RESEARCH LETTERS 44.24(2017). |
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