globalchange  > 影响、适应和脆弱性
DOI: 10.1007/s00382-017-4004-3
Scopus记录号: 2-s2.0-85034228794
论文题名:
Two leading modes of the interannual variability in South American surface air temperature during austral winter
作者: Li Y.; Li J.; Kucharski F.; Feng J.; Zhao S.; Zheng J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期:2018-05-06
起始页码: 2141
结束页码: 2156
语种: 英语
英文关键词: Cloud-radiation effect ; Leading modes ; South America ; Surface air temperature ; Temperature advection
Scopus关键词: advection ; air temperature ; annual variation ; cloud radiative forcing ; empirical orthogonal function analysis ; seasonal variation ; South America
英文摘要: The 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. © 2017, Springer-Verlag GmbH Germany, part of Springer Nature.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109136
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Earth Surface Processes and Resource Ecology and College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China; Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China; Earth System Physics Section, Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, Trieste, 34151, Italy; Institute of Urban Meteorology, China Meteorological Administration, Beijing, China; School of Ocean and Earth Science and Technology, University of Hawaii at Mānoa, Honolulu, HI, United States; Key Laboratory of Meteorological Disaster of Ministry of Education, and College of Atmospheric Science, Nanjing University of Information Science and Technology, Nanjing, China; State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China

Recommended Citation:
Li Y.,Li J.,Kucharski F.,et al. Two leading modes of the interannual variability in South American surface air temperature during austral winter[J]. Climate Dynamics,2018-01-01,51(2018-05-06)
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