| DOI: | 10.1002/grl.50770
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| 论文题名: | Mechanism of the wintertime Aleutian Low-Icelandic Low seesaw |
| 作者: | Sun J.; Tan B.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8732
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| EISSN: | 1944-8463
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| 出版年: | 2013
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| 卷: | 40, 期:15 | | 起始页码: | 4103
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| 结束页码: | 4108
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| 语种: | 英语
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| 英文关键词: | AL-IL seesaw
; Arctic Oscillation
; East Pacific wave train
; teleconnection
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| Scopus关键词: | AL-IL seesaw
; Arctic Oscillation
; Atmospheric research reanalysis
; Driving mechanism
; National centers for environmental predictions
; Stratospheric polar vortex
; Teleconnections
; Wave train
; Vortex flow
; Wave propagation
; Aluminum
; climate change
; oscillating flow
; stratosphere
; vortex
; wave reflection
; winter
; Alaska
; Aleutian Islands
; United States
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| 英文摘要: | The driving mechanism for the wintertime (December-March) Aleutian Low-Icelandic Low (AL-IL) seesaw is investigated with National Centers for Environmental Prediction/National Center for Atmospheric Research reanalysis data for 1948-2009. It is shown that the AL and the IL are dynamically linked through the eastern Pacific wave train (EPW) and that both the EPWs and the stratospheric polar vortex are found to work cooperatively to produce a significant AL-IL seesaw. In general, it is found that wave reflection by the polar vortex is crucial for the formation of the AL-IL seesaw. However, when the EPWs are extremely strong, the AL-IL seesaw appears to be caused primarily by horizontal wave propagation. It is further shown that the Pacific center of the traditional Arctic Oscillation pattern is present when the AL-IL seesaw is active, but it disappears when the AL-IL seesaw is absent. © 2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881184780&doi=10.1002%2fgrl.50770&partnerID=40&md5=e2c53f53073e6b625eaf795cfa33e39a
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/5996
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing 100871, China
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| Recommended Citation: | |
Sun J.,Tan B.. Mechanism of the wintertime Aleutian Low-Icelandic Low seesaw[J]. Geophysical Research Letters,2013-01-01,40(15).
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