DOI: 10.1002/2016GL069961
论文题名: New observational evidence for a positive cloud feedback that amplifies the Atlantic Multidecadal Oscillation
作者: Bellomo K. ; Clement A.C. ; Murphy L.N. ; Polvani L.M. ; Cane M.A.
刊名: Geophysical Research Letters
ISSN: 0094-8627
EISSN: 1944-8358
出版年: 2016
卷: 43, 期: 18 起始页码: 9852
结束页码: 9859
语种: 英语
英文关键词: Atlantic Multidecadal Oscillation
Scopus关键词: Atmospheric radiation
; Atmospheric temperature
; Climate change
; Climatology
; Surface waters
; Tropics
; Atlantic multidecadal oscillations
; Atmospheric circulation
; Climate variability
; Cloud radiative forcing
; Idealized models
; Satellite retrieval
; Sea surface temperature (SST)
; Societal impacts
; Oceanography
英文摘要: The Atlantic Multidecadal Oscillation (AMO) affects climate variability in the North Atlantic basin and adjacent continents with potential societal impacts. Previous studies based on model simulations and short-term satellite retrievals hypothesized an important role for cloud radiative forcing in modulating the persistence of the AMO in the tropics, but this mechanism remains to be tested with long-term observational records. Here we analyze data sets that span multiple decades and present new observational evidence for a positive feedback between total cloud amount, sea surface temperature (SST), and atmospheric circulation that can strengthen the persistence and amplitude of the tropical branch of the AMO. In addition, we estimate cloud amount feedback from observations and quantify its impact on SST with idealized modeling experiments. From these experiments we conclude that cloud feedbacks can account for 10% to 31% of the observed SST anomalies associated with the AMO over the tropics. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987936751&doi=10.1002%2f2016GL069961&partnerID=40&md5=689e78ff63b505fc42927354244fd847
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9590
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: Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States
Recommended Citation:
Bellomo K.,Clement A.C.,Murphy L.N.,et al. New observational evidence for a positive cloud feedback that amplifies the Atlantic Multidecadal Oscillation[J]. Geophysical Research Letters,2016-01-01,43(18).