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Enhanced El Nino-Southern Oscillation Variability in Recent Decades

文献类型：期刊论文

作者Grothe, Pamela R.1,2; Cobb, Kim M.1; Liguori, Giovanni3,4; Di Lorenzo, Emanuele1; Capotondi, Antonietta5; Lu, Yanbin6; Cheng, Hai7,8; Edwards, R. Lawrence7; Southon, John R.9; Santos, Guaciara M.9
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2020-04-16
卷号47期号:7页码:8
ISSN号0094-8276
关键词El Nino-Southern Oscillation coral paleoclimate anthropogenic climate change Holocene climate change
DOI10.1029/2019GL083906
通讯作者Grothe, Pamela R.(pgrothe@umw.edu)
英文摘要The El Nino-Southern Oscillation (ENSO) represents the largest source of year-to-year global climate variability. While Earth system models suggest a range of possible shifts in ENSO properties under continued greenhouse gas forcing, many centuries of preindustrial climate data are required to detect a potential shift in the properties of recent ENSO extremes. Here we reconstruct the strength of ENSO variations over the last 7,000 years with a new ensemble of fossil coral oxygen isotope records from the Line Islands, located in the central equatorial Pacific. The corals document a significant decrease in ENSO variance of similar to 20% from 3,000 to 5,000 years ago, coinciding with changes in spring/fall precessional insolation. We find that ENSO variability over the last five decades is similar to 25% stronger than during the preindustrial. Our results provide empirical support for recent climate model projections showing an intensification of ENSO extremes under greenhouse forcing. Plain Language Summary Recent modeling studies suggest that El Nino will intensify due to greenhouse warming. Here new coral reconstructions of the El Nino-Southern Oscillation (ENSO) record sustained, significant changes in ENSO variability over the last 7,000 years and imply that ENSO extremes of the last 50 years are significantly stronger than those of the preindustrial era in the central tropical Pacific. These records suggest that El Nino events already may be intensifying due to anthropogenic climate change.
WOS关键词TROPICAL PACIFIC CLIMATE ; NINO/SOUTHERN-OSCILLATION ; ENSO ; MIDHOLOCENE ; PRECIPITATION ; FREQUENCY ; VARIANCE ; EVENTS ; RECORD ; OCEAN
资助项目National Science Foundation[1502832] ; National Science Foundation[1446343] ; National Science Foundation[1029020] ; National Science Foundation[1349599] ; National Science Foundation of China[41888101] ; U.S. Geological Survey and National Science Foundation[1535007] ; Sigma Delta Epsilon-Graduate Women in Science fellowship ; NOAA's Climate Program Office and DOE's Office of Science
WOS研究方向Geology
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000560367600004
资助机构National Science Foundation ; National Science Foundation of China ; U.S. Geological Survey and National Science Foundation ; Sigma Delta Epsilon-Graduate Women in Science fellowship ; NOAA's Climate Program Office and DOE's Office of Science
源URL[http://ir.ieecas.cn/handle/361006/15212]  
专题地球环境研究所_现代环境研究室
通讯作者Grothe, Pamela R.
作者单位1.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA
2.Univ Mary Washington, Dept Earth & Environm Sci, Fredericksburg, VA USA
3.Monash Univ, ARC Ctr Excellence Climate Extremes, Melbourne, Vic, Australia
4.Monash Univ, Sch Earth Atmosphere & Environm, Melbourne, Vic, Australia
5.NOAA, Earth Syst Res Lab, Phys Sci Div, Boulder, CO USA
6.Chinese Acad Sci, Inst Earth Environm, Xian, Peoples R China
7.Univ Minnesota, Dept Earth Sci, Minneapolis, MN USA
8.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian, Peoples R China
9.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA USA
10.Georgia State Univ, Dept Geosci, Atlanta, GA 30303 USA
推荐引用方式
GB/T 7714		 Grothe, Pamela R.,Cobb, Kim M.,Liguori, Giovanni,et al. Enhanced El Nino-Southern Oscillation Variability in Recent Decades[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(7):8.
APA Grothe, Pamela R..,Cobb, Kim M..,Liguori, Giovanni.,Di Lorenzo, Emanuele.,Capotondi, Antonietta.,...&Toth, Lauren T..(2020).Enhanced El Nino-Southern Oscillation Variability in Recent Decades.GEOPHYSICAL RESEARCH LETTERS,47(7),8.
MLA Grothe, Pamela R.,et al."Enhanced El Nino-Southern Oscillation Variability in Recent Decades".GEOPHYSICAL RESEARCH LETTERS 47.7(2020):8.

入库方式： OAI收割

来源：地球环境研究所

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