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DOI10.1175/JCLI-D-16-0427.1
Enlarged Asymmetry of Tropical Pacific Rainfall Anomalies Induced by El Nino and La Nina under Global Warming
Huang, Ping1,2; Chen, Dong3
2017-02-01
发表期刊JOURNAL OF CLIMATE
ISSN0894-8755
EISSN1520-0442
出版年2017
卷号30期号:4
文章类型Article
语种英语
国家Peoples R China
英文摘要

El Nino-Southern Oscillation (ENSO) is one of the most important sources of climate interannual variability. A prominent characteristic of ENSO is the asymmetric, or so-called nonlinear, local rainfall response to El Nino (EN) and La Nina (LN), in which the maximum rainfall anomalies during EN are located farther east than those during LN. In this study, the changes in rainfall anomalies during EN and LN are examined based on the multimodel ensemble mean results of 32 CMIP5 models under the representative concentration pathway 8.5 (RCP8.5) scenario. It is found that robust EN-LN asymmetric changes in rainfall anomalies exist. The rainfall anomalies during EN and LN both shift eastward and intensify under global warming, but the eastward shift during EN is farther east than that during LN. A simplified moisture budget decomposition method is applied to study the mechanism of the asymmetric response. The results show that the robust increase in mean-state moisture can enlarge the EN-LN asymmetry of the rainfall anomalies, and the spatial relative changes in mean-state SST with an El Nino-like pattern can shift the rainfall anomalies farther east during EN than during LN, enlarging the difference in the zonal locations of the rainfall response to EN and LN. The role of the relative changes in mean-state SST can also be interpreted as follows: the decreased zonal gradient of mean-state SST due to El Nino-like warming leads to a larger EN-LN asymmetry of rainfall anomalies under a future warming climate.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000395522400010
WOS关键词SEA-SURFACE TEMPERATURE ; ENSO ASYMMETRY ; PRECIPITATION RESPONSE ; EQUATORIAL PACIFIC ; HYDROLOGICAL CYCLE ; ATMOSPHERIC BRIDGE ; CLIMATE ; CMIP5 ; CIRCULATION ; VARIABILITY
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/20274
专题气候变化
作者单位1.Chinese Acad Sci, Ctr Monsoon Syst Res, Beijing, Peoples R China;
2.Chinese Acad Sci, LASG, Inst Atmospher Phys, Beijing, Peoples R China;
3.Chengdu Univ Informat Technol, Coll Atmospher Sci, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu, Peoples R China
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GB/T 7714
Huang, Ping,Chen, Dong. Enlarged Asymmetry of Tropical Pacific Rainfall Anomalies Induced by El Nino and La Nina under Global Warming[J]. JOURNAL OF CLIMATE,2017,30(4).
APA Huang, Ping,&Chen, Dong.(2017).Enlarged Asymmetry of Tropical Pacific Rainfall Anomalies Induced by El Nino and La Nina under Global Warming.JOURNAL OF CLIMATE,30(4).
MLA Huang, Ping,et al."Enlarged Asymmetry of Tropical Pacific Rainfall Anomalies Induced by El Nino and La Nina under Global Warming".JOURNAL OF CLIMATE 30.4(2017).
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