DOI: 10.1175/JCLI-D-12-00548.1
Scopus记录号: 2-s2.0-84880518666
论文题名: Externally forced and internally generated decadal climate variability associated with the interdecadal pacific oscillation
作者: Meehl G.A. ; Hu A. ; Arblaster J.M. ; Fasullo J. ; Trenberth K.E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 18 起始页码: 7298
结束页码: 7310
语种: 英语
Scopus关键词: Antarctic Bottom Water
; Atlantic meridional overturning circulations
; Community climate system model
; Decadal climate variability
; Inter-decadal pacific oscillations
; Response to external forcing
; Surface air temperatures
; Top of the atmospheres
; Atmospheric temperature
; Climatology
; Enthalpy
; Global warming
; Greenhouse gases
; Climate models
; Antarctic Bottom Water
; climate change
; climate modeling
; climate oscillation
; climate variation
; decadal variation
; global warming
; heat flux
; hiatus
; sea surface temperature
; top of atmosphere
; trend analysis
; upper ocean
; warming
; Atlantic Ocean
; Pacific Ocean
; Pacific Ocean (Tropical)
; Southern Ocean
英文摘要: Globally averaged surface air temperatures in some decades show rapid increases (accelerated warming decades), and in other decades there is no warming trend (hiatus decades). A previous study showed that the net energy imbalance at the top of the atmosphere of about 1Wm22 is associated with greater increases of deep ocean heat content below 750m during the hiatus decades, while there is little globally averaged surface temperature increase or warming in the upper ocean layers. Here the authors examine processes involved with accelerated warming decades and address the relative roles of external forcing from increasing greenhouse gases and internally generated decadal climate variability associated with interdecadal Pacific oscillation (IPO). Model results from the Community Climate System Model, version 4 (CCSM4), show that accelerated warming decades are characterized by rapid warming of globally averaged surface air temperature, greater increases of heat content in the upper ocean layers, and less heat content increase in the deep ocean, opposite to the hiatus decades. In addition to contributions from processes potentially linked to Antarctic Bottom Water (AABW) formation and the Atlantic meridional overturning circulation (AMOC), the positive phase of the IPO, adding to the response to external forcing, is usually associated with accelerated warming decades. Conversely, hiatus decades typically occur with the negative phase of the IPO, when warming from the external forcing is overwhelmed by internally generated cooling in the tropical Pacific. Internally generated hiatus periods of up to 15 years with zero global warming trend are present in the future climate simulations. This suggests that there is a chance that the current observed hiatus could extend for several more years. © 2013 American Meteorological Society. 资助项目: NSF, National Science Foundation
; DOE, U.S. Department of Energy
; NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51663
Appears in Collections: 气候变化事实与影响
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作者单位: National Center for Atmospheric Research, Boulder, CO, United States; National Center for Atmospheric Research, Boulder, CO, United States; CAWCR, Bureau of Meteorology, Melbourne, Australia; National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Meehl G.A.,Hu A.,Arblaster J.M.,et al. Externally forced and internally generated decadal climate variability associated with the interdecadal pacific oscillation[J]. Journal of Climate,2013-01-01,26(18)