| DOI: | 10.1038/s41561-017-0001-8
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| 论文题名: | Enhanced poleward propagation of storms under climate change |
| 作者: | Tamarin-Brodsky T.; Kaspi Y.
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| 刊名: | Nature Geoscience
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| ISSN: | 17520894
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| 出版年: | 2017
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| 卷: | 10, 期:12 | | 起始页码: | 908
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| 结束页码: | 913
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| 语种: | 英语
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| Scopus关键词: | baroclinic motion
; climate change
; climate modeling
; CMIP
; cyclone
; global warming
; greenhouse gas
; precipitation (climatology)
; storm
; storm track
; temperature effect
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| 英文摘要: | Earth's midlatitudes are dominated by regions of large atmospheric weather variability - often referred to as storm tracks - which influence the distribution of temperature, precipitation and wind in the extratropics. Comprehensive climate models forced by increased greenhouse gas emissions suggest that under global warming the storm tracks shift poleward. While the poleward shift is a robust response across most models, there is currently no consensus on what the underlying dynamical mechanism is. Here we present a new perspective on the poleward shift, which is based on a Lagrangian view of the storm tracks. We show that in addition to a poleward shift in the genesis latitude of the storms, associated with the shift in baroclinicity, the latitudinal displacement of cyclonic storms increases under global warming. This is achieved by applying a storm-tracking algorithm to an ensemble of CMIP5 models. The increased latitudinal propagation in a warmer climate is shown to be a result of stronger upper-level winds and increased atmospheric water vapour. These changes in the propagation characteristics of the storms can have a significant impact on midlatitude climate. © 2017 The Author(s). |
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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/105646
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| Appears in Collections: | 气候减缓与适应
科学计划与规划
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作者单位: | Weizmann Institute of Science, Department of Earth and Planetary Sciences, Rehovot, Israel
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| Recommended Citation: | |
Tamarin-Brodsky T.,Kaspi Y.. Enhanced poleward propagation of storms under climate change[J]. Nature Geoscience,2017-01-01,10(12)
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