DOI: 10.1175/JCLI-D-14-00721.1
Scopus记录号: 2-s2.0-84947790784
论文题名: Changes in independency between two types of El Niño events under a greenhouse warming scenario in CMIP5 models
作者: Ham Y.-G. ; Jeong Y. ; Kug J.-S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 19 起始页码: 7561
结束页码: 7575
语种: 英语
Scopus关键词: Climate models
; Climatology
; Global warming
; Greenhouses
; Atmospheric response
; EL Nino
; ENSO
; Greenhouse warming
; Intercomparisons
; Spatial patterns
; Warm pools
; Western Pacific
; Nickel
; climate change
; climate modeling
; El Nino
; global warming
; greenhouse effect
; Pacific Ocean
英文摘要: This study uses archives fromphase 5 of the CoupledModel Intercomparison Project (CMIP5) to investigate changes in independency between two types of El Niño events caused by greenhouse warming. In the observations, the independency between cold tongue (CT) and warm pool (WP) El Niño events is distinctively increased in recent decades. The simulated changes in independency between the two types of El Niño events according to the CMIP5 models are quite diverse, although the observed features are simulated to some extent in several climatemodels. It is found that the climatological change after global warming is an essential factor in determining the changes in independency between the two types of El Niño events. For example, the independency between these events is increased after global warming when the climatological precipitation is increased mainly over the equatorial central Pacific. This climatological precipitation increase extends convective response to the east, particularly for CT El Niño events, which leads to greater differences in the spatial pattern between the two types of El Niño events to increase the El Niño independency. On the contrary, in models with decreased independency between the two types of El Niño events after global warming, climatological precipitation is increased mostly over the western Pacific. This confines the atmospheric response to the western Pacific in both El Niño events; therefore, the similarity between them is increased after global warming. In addition to the changes in the climatological state after global warming, a possible connection of the changes in the El Niño independency with the historical mean state is discussed in this paper. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50598
Appears in Collections: 气候变化事实与影响
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作者单位: Faculty of Earth Systems and Environmental Sciences, Chonnam National University, Gwangju, South Korea; School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
Recommended Citation:
Ham Y.-G.,Jeong Y.,Kug J.-S.. Changes in independency between two types of El Niño events under a greenhouse warming scenario in CMIP5 models[J]. Journal of Climate,2015-01-01,28(19)