| DOI: | 10.1002/2015GL065095
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| 论文题名: | The Madden-Julian Oscillation in a warmer world |
| 作者: | Chang C.-W.J.; Tseng W.-L.; Hsu H.-H.; Keenlyside N.; Tsuang B.-J.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9579
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| EISSN: | 1944-9310
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| 出版年: | 2015
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| 卷: | 42, 期:14 | | 起始页码: | 6034
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| 结束页码: | 6042
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| 语种: | 英语
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| 英文关键词: | climate change
; Madden-Julian Oscillation
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| Scopus关键词: | Climate change
; Friction
; Global warming
; Convective heating
; Deep convection
; Diabatic heating
; Kelvin waves
; Key feature
; Madden-Julian oscillation
; Second kinds
; Spatial extent
; Climatology
; climate change
; convergence
; coupling
; global warming
; Kelvin-Helmholtz instability
; Madden-Julian oscillation
; perturbation
; thermodynamics
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| 英文摘要: | Global warming's impact on the Madden-Julian Oscillation (MJO) is assessed using one of the few models capable in reproducing its key features. In a warmer climate predicted for the end of the century, the MJO increases in amplitude (by ∼30%) and frequency, showing a more circumglobal propagation tendency. The MJO spatial extent becomes enhanced, deeper, and more zonally extended but meridionally confined. A stronger vertical tilting structure in diabatic heating, moisture, and convergence fields is seen. Our findings indicate that these changes result from an intensification of the frictional wave-conditional instability of the second kind mechanism via the coupling of dynamical and thermodynamic response to the warming. The warming and moistening of the mean state contribute to the enhanced deep convective heating, driving a stronger-forced Kelvin wave-like perturbation. This reinforces the frictional low-level convergence, leading to larger shallow convective heating and therefore to a faster development and enhancement of the deep convection in the MJO. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938972023&doi=10.1002%2f2015GL065095&partnerID=40&md5=3966df56d4759a9f507e59ec8a044483
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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/9194
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Department of Atmospheric Sciences, Chinese Culture University, Taipei, Taiwan
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| Recommended Citation: | |
Chang C.-W.J.,Tseng W.-L.,Hsu H.-H.,et al. The Madden-Julian Oscillation in a warmer world[J]. Geophysical Research Letters,2015-01-01,42(14).
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