| DOI: | 10.1002/2015GL063843
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| 论文题名: | A surface layer variance heat budget for ENSO |
| 作者: | Boucharel J.; Timmermann A.; Santoso A.; England M.H.; Jin F.-F.; Balmaseda M.A.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9332
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| EISSN: | 1944-9063
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| 出版年: | 2015
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| 卷: | 42, 期:9 | | 起始页码: | 3529
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| 结束页码: | 3537
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| 语种: | 英语
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| 英文关键词: | climate feedbacks
; ENSO
; heat budget
; multidecadal variability
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| Scopus关键词: | Atmospheric pressure
; Atmospheric temperature
; Budget control
; Feedback
; Oceanography
; Surface properties
; Surface waters
; Climate feedbacks
; ENSO
; Heat budget
; Higher-order process
; Multidecadal variability
; Ocean surface temperature
; Sea surface temperature (SST)
; Southern oscillation
; Climatology
; El Nino-Southern Oscillation
; heat budget
; sea surface temperature
; surface layer
; thermocline
; Pacific Ocean
; Pacific Ocean (Tropical)
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| 英文摘要: | Characteristics of the El Niño-Southern Oscillation (ENSO), such as frequency, propagation, spatial extent, and amplitude, strongly depend on the climatological background state of the tropical Pacific. Multidecadal changes in the ocean mean state are hence likely to modulate ENSO properties. To better link background state variations with low-frequency amplitude changes of ENSO, we develop a diagnostic framework that determines locally the contributions of different physical feedback terms on the ocean surface temperature variance. Our analysis shows that multidecadal changes of ENSO variance originate from the delicate balance between the background-state-dependent positive thermocline feedback and the atmospheric damping of sea surface temperatures anomalies. The role of higher-order processes and atmospheric and oceanic nonlinearities is also discussed. The diagnostic tool developed here can be easily applied to other tropical ocean areas and climate phenomena. Key Points New framework linking temperature variance to climate feedbacks Thermocline feedback and dynamical damping shape patterns of ENSO amplitude Diagnostic tool for model biases and ENSO sensitivity assessment ©2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930481183&doi=10.1002%2f2015GL063843&partnerID=40&md5=583c09ec2e7b797eb5e8153b44aaf5cd
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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/8947
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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: | ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, NSW, Australia
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| Recommended Citation: | |
Boucharel J.,Timmermann A.,Santoso A.,et al. A surface layer variance heat budget for ENSO[J]. Geophysical Research Letters,2015-01-01,42(9).
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