| DOI: | 10.1002/2013GL058315
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| 论文题名: | Processes controlling Southern Ocean shortwave climate feedbacks in CESM |
| 作者: | Kay J.E.; Medeiros B.; Hwang Y.-T.; Gettelman A.; Perket J.; Flanner M.G.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10446
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| EISSN: | 1944-10177
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| 出版年: | 2014
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| 卷: | 41, 期:2 | | 起始页码: | 616
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| 结束页码: | 622
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| 语种: | 英语
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| 英文关键词: | climate feedbacks
; clouds
; jet
; sea ice
; shortwave radiation
; Southern Ocean
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| Scopus关键词: | Clouds
; Earth atmosphere
; Jets
; Oceanography
; Sea ice
; Thermodynamics
; Climate feedbacks
; Cloud liquid waters
; Community atmosphere model
; Competing effects
; Earth system model
; Naturally occurring
; Short-wave radiation
; Southern ocean
; Process control
; albedo
; climate change
; climate feedback
; climate modeling
; jet stream
; marine atmosphere
; shortwave radiation
; thermodynamics
; twenty first century
; warming
; Southern Ocean
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| 英文摘要: | A climate model (Community Earth System Model with the Community Atmosphere Model version 5 (CESM-CAM5)) is used to identify processes controlling Southern Ocean (30-70°S) absorbed shortwave radiation (ASR). In response to 21st century Representative Concentration Pathway 8.5 forcing, both sea ice loss (2.6 W m-2) and cloud changes (1.2 W m-2) enhance ASR, but their relative importance depends on location and season. Poleward of ∼55°S, surface albedo reductions and increased cloud liquid water content (LWC) have competing effects on ASR changes. Equatorward of ∼55°S, decreased LWC enhances ASR. The 21st century cloud LWC changes result from warming and near-surface stability changes but appear unrelated to a small (1°) poleward shift in the eddy-driven jet. In fact, the 21st century ASR changes are 5 times greater than ASR changes resulting from large (5°) naturally occurring jet latitude variability. More broadly, these results suggest that thermodynamics (warming and near-surface stability), not poleward jet shifts, control 21st century Southern Ocean shortwave climate feedbacks. ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892665927&doi=10.1002%2f2013GL058315&partnerID=40&md5=4d9c5ed1ba351e00b9bfaaa01cf34c08
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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/7710
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO, United States
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| Recommended Citation: | |
Kay J.E.,Medeiros B.,Hwang Y.-T.,et al. Processes controlling Southern Ocean shortwave climate feedbacks in CESM[J]. Geophysical Research Letters,2014-01-01,41(2).
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