| DOI: | 10.1002/2014GL061659
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| 论文题名: | Anthropogenic influence on recent circulation-driven Antarctic sea ice changes |
| 作者: | Haumann F.A.; Notz D.; Schmidt H.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9508
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| EISSN: | 1944-9239
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| 出版年: | 2014
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| 卷: | 41, 期:23 | | 起始页码: | 8429
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| 结束页码: | 8437
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| 语种: | 英语
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| 英文关键词: | Antarctic
; anthropogenic
; climate change
; model
; observations
; sea ice
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| Scopus关键词: | Climate change
; Climate models
; Greenhouse gases
; Models
; Ozone layer
; Sea ice
; Antarctic
; anthropogenic
; Anthropogenic influence
; Atmospheric reanalysis
; Global climate model
; Multi-decadal time scale
; observations
; Stratospheric ozone depletion
; Ice
; anthropogenic effect
; atmospheric pressure
; global climate
; meridional circulation
; sea ice
; surface pressure
; timescale
; Southern Ocean
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| 英文摘要: | Observations reveal an increase of Antarctic sea ice over the past three decades, yet global climate models tend to simulate a sea ice decrease for that period. Here we combine observations with model experiments (MPI-ESM) to investigate causes for this discrepancy and for the observed sea ice increase. Based on observations and atmospheric reanalysis, we show that on multidecadal time scales Antarctic sea ice changes are linked to intensified meridional winds that are caused by a zonally asymmetric lowering of the high-latitude surface pressure. In our simulations, this surface pressure lowering is a response to a combination of anthropogenic stratospheric ozone depletion and greenhouse gas increase. Combining these two lines of argument, we infer a possible anthropogenic influence on the observed sea ice changes. However, similar to other models, MPI-ESM simulates a surface-pressure response that is rather zonally symmetric, which explains why the simulated sea ice response differs from observations. © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84920953068&doi=10.1002%2f2014GL061659&partnerID=40&md5=fb6c1a05b6de8eae211d9426d964e194
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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/6772
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Max Planck Institute for Meteorology, Hamburg, Germany
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| Recommended Citation: | |
Haumann F.A.,Notz D.,Schmidt H.. Anthropogenic influence on recent circulation-driven Antarctic sea ice changes[J]. Geophysical Research Letters,2014-01-01,41(23).
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