SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)
Two leading modes of the interannual variability in South American surface air temperature during austral winter
Li, Yanjie; Li, Jianping1,2,3; Kucharski, Fred4; Feng, Jin5; Zhao, Sen6,7,8; Zheng, Jiayu9
2018
Source PublicationCLIMATE DYNAMICS
ISSN0930-7575
Volume51Issue:5-6Pages:2141
AbstractThe first two empirical orthogonal function (EOF) modes of the surface air temperature (SAT) interannual variability in the South American (SA) continent have been revealed in several previous studies. This presentation focuses on winter season and furtherly investigates the detailed advection and cloud-radiation processes and teleconnections from tropical sea surface temperature anomalies (SSTA) combining statistical analysis with Rossby wave dynamics and modelling experiments. The EOF1, featured with the anomalous center in the central part, is related to the tropical eastern Pacific SSTA, which may impact on the SA SAT variability through the Walker circulation and a regional Hadley cell. The anomalous center is largely attributed to low-level advection transported by the Hadley cell. The EOF2, as a fluctuation between anomalies in the southeast Brazil and the southern tip, is related to the SSTA surrounding the Maritime Continent, which may generate a barotropic wave train propagating to the SA continent. This wave train can strengthen high latitude westerly flow transporting warm advection to the southern tip, and generate southeast anomalous flow transporting cold advection to the southeast Brazil. Meanwhile, the cloud-radiation processes are also involved to enhance the advection-induced SAT anomalies in both areas.
DepartmentLTO
KeywordSurface air temperature Leading modes South America Temperature advection Cloud-radiation effect
DOI10.1007/s00382-017-4004-3
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17577
Collection热带海洋环境国家重点实验室(LTO)
Affiliation1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing, Peoples R China
2.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
3.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China
4.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao 266237, Peoples R China
5.Abdus Salam Int Ctr Theoret Phys, Earth Syst Phys Sect, Str Costiera 11, I-34151 Trieste, Italy
6.China Meteorol Adm, Inst Urban Meteorol, Beijing, Peoples R China
7.Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, Honolulu, HI 96822 USA
8.Nanjing Univ Informat Sci & Technol, Minist Educ, Key Lab Meteorol Disaster, Nanjing, Jiangsu, Peoples R China
9.Nanjing Univ Informat Sci & Technol, Coll Atmospher Sci, Nanjing, Jiangsu, Peoples R China
10.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Li, Yanjie,Li, Jianping,Kucharski, Fred,et al. Two leading modes of the interannual variability in South American surface air temperature during austral winter[J]. CLIMATE DYNAMICS,2018,51(5-6):2141, 2156.
APA Li, Yanjie,Li, Jianping,Kucharski, Fred,Feng, Jin,Zhao, Sen,&Zheng, Jiayu.(2018).Two leading modes of the interannual variability in South American surface air temperature during austral winter.CLIMATE DYNAMICS,51(5-6),2141.
MLA Li, Yanjie,et al."Two leading modes of the interannual variability in South American surface air temperature during austral winter".CLIMATE DYNAMICS 51.5-6(2018):2141.
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