SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)
Decadal Transition of the Leading Mode of Interannual Moisture Circulation over East Asia-Western North Pacific: Bonding to Different Evolution of ENSO
Li, Xiuzhen1,2; Wen, Zhiping2,3,4; Chen, Deliang5; Chen, Zesheng6
2019
Source PublicationJOURNAL OF CLIMATE
ISSN0894-8755
Volume32Issue:2Pages:289
AbstractThe El Nino-Southern Oscillation (ENSO) cycle has a great impact on the summer moisture circulation over East Asia (EA) and the western North Pacific [WNP (EA-WNP)] on an interannual time scale, and its modulation is mainly embedded in the leading mode. In contrast to the stable influence of the mature phase of ENSO, the impact of synchronous eastern Pacific sea surface temperature anomalies (SSTAs) on summer moisture circulation is negligible during the 1970s-80s, while it intensifies after 1991. In response, the interannual variation of moisture circulation exhibits a much more widespread anticyclonic/cyclonic pattern over the subtropical WNP and a weaker counterpart to the north after 1991. Abnormal moisture moves farther northward with the enhanced moisture convergence, and thus precipitation shifts from the Yangtze River to the Huai River valley. The decadal shift in the modulation of ENSO on moisture circulation arises from a more rapid evolution of the bonding ENSO cycle and its stronger coupling with circulation over the Indian Ocean after 1991. The rapid development of cooling SSTAs over the central-eastern Pacific, and warming SSTAs to the west over the eastern Indian Ocean-Maritime Continent (EIO-MC) in summer, stimulates abnormal descending motion over the western-central Pacific and ascending motion over the EIO-MC. The former excites an anticyclone over the WNP as a Rossby wave response, sustaining and intensifying the WNP anticyclone; the latter helps anchor the anticyclone over the tropical-subtropical WNP via an abnormal southwest-northeast vertical circulation between EIO-MC and WNP.
DepartmentLTO
KeywordENSO Air-sea interaction Climate variability Hydrologic cycle Moisture moisture budget
DOI10.1175/JCLI-D-18-0356.1
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17792
Collection热带海洋环境国家重点实验室(LTO)
Affiliation1.Sun Yat Sen Univ, Ctr Monsoon & Environm Res, Guangzhou, Guangdong, Peoples R China
2.Sun Yat Sen Univ, Dept Atmospher Sci, Guangdong Prov Key Lab Climate Change & Nat Disas, Guangzhou, Guangdong, Peoples R China
3.Jiangsu Collaborat Innovat Ctr Climate Change, Nanjing, Jiangsu, Peoples R China
4.Fudan Univ, Inst Atmospher Sci, Shanghai, Peoples R China
5.Sun Yat Sen Univ, Sch Atmospher Sci, Guangzhou, Guangdong, Peoples R China
6.Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, Gothenburg, Sweden
7.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Li, Xiuzhen,Wen, Zhiping,Chen, Deliang,et al. Decadal Transition of the Leading Mode of Interannual Moisture Circulation over East Asia-Western North Pacific: Bonding to Different Evolution of ENSO[J]. JOURNAL OF CLIMATE,2019,32(2):289, 308.
APA Li, Xiuzhen,Wen, Zhiping,Chen, Deliang,&Chen, Zesheng.(2019).Decadal Transition of the Leading Mode of Interannual Moisture Circulation over East Asia-Western North Pacific: Bonding to Different Evolution of ENSO.JOURNAL OF CLIMATE,32(2),289.
MLA Li, Xiuzhen,et al."Decadal Transition of the Leading Mode of Interannual Moisture Circulation over East Asia-Western North Pacific: Bonding to Different Evolution of ENSO".JOURNAL OF CLIMATE 32.2(2019):289.
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