| DOI: | 10.1002/2016GL068771
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| 论文题名: | Past- and present-day Madden-Julian Oscillation in CNRM-CM5 |
| 作者: | Song E.-J.; Seo K.-H.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9093
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| EISSN: | 1944-8824
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| 出版年: | 2016
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| 卷: | 43, 期:8 | | 起始页码: | 4042
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| 结束页码: | 4048
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| 语种: | 英语
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| 英文关键词: | CMIP5
; GHG forcing
; inverted Walker circulation
; MJO
; Rossby wave response
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| Scopus关键词: | Atmospheric temperature
; Climate models
; Greenhouse gases
; Mechanical waves
; Oceanography
; Surface waters
; Wind effects
; CMIP5
; Coupled Model Intercomparison Project
; GHG forcing
; Greenhouse-gas forcing
; Madden-Julian oscillation
; Rossby wave response
; Sea surface temperature (SST)
; Walker circulation
; Climatology
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| 英文摘要: | Madden-Julian Oscillation (MJO) in the past (nineteenth century) and present day (twentieth century) is examined using preindustrial and historical experiments of Centre National de Recherches Météorologiques-Coupled Models, version 5 (CNRM-CM5) in Coupled Model Intercomparison Project Phase 5 (CMIP5). The present-day MJO is stronger than the past MJO by 33% and it is ~10% more frequent. In particular, the MJO phases 4-7 signifying deep convection situated over the Maritime continent and western Pacific (WP) are considerably enhanced. These changes are due mainly to greenhouse gas forcing with little impact from nature forcing. Dynamical mechanisms for this change are investigated. A peculiar strengthening of MJO over WP comes from increased basic-state sea surface temperature (SST) over the Central Pacific (CP) and EP. The increase in precipitation over WP results from both the response to enhanced SST over CP and the inverted Walker circulation induced by the EP and CP SST increase. The latter causes a pair of anticyclonic Rossby waves straddling the equator, leading to moisture convergence over WP. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964647525&doi=10.1002%2f2016GL068771&partnerID=40&md5=56bed1370611f68951bc91bfbd642480
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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/10056
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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, Division of Earth Environmental Systems, Pusan National University, Busan, South Korea
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| Recommended Citation: | |
Song E.-J.,Seo K.-H.. Past- and present-day Madden-Julian Oscillation in CNRM-CM5[J]. Geophysical Research Letters,2016-01-01,43(8).
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