Remote impact of North Atlantic sea surface temperature on rainfall in southwestern China during boreal spring
Li, G; Chen, JP; Wang, X; Luo, X; Yang, DY; Zhou, W; Tan, YK; Yan, HM; wangxin@scsio.ac.cn
2018
发表期刊CLIMATE DYNAMICS
卷号50期号:2018-01-02页码:541-553
摘要As an important oceanic signal, the North Atlantic sea surface temperature (SST) affects not only the climate variability over East China and Northeast China but also can affect climate variability over southwestern China (SWC). Based on station rainfall data and reanalysis datasets, the present study investigates the relationship of North Atlantic SST with SWC rainfall during boreal spring for the period 1979-2016. The results show that there is a significant positive correlation between North Atlantic SST and SWC rainfall during boreal spring. The atmospheric circulation over southern Asia associated with North Atlantic SST is favorable for positive rainfall anomalies. Further analyses show that North Atlantic SST can induce a North Atlantic-western Russia-western Tibetan Plateau-SWC (NRTC) teleconnection wave train from upper level to low level. At low level, two anomalous anticyclones are found over the mid-high latitude of North Atlantic and the western Tibetan Plateau, and two anomalous cyclones are observed over the western Russia and Bay of Bengal (BOB), respectively. The NRTC teleconnection wave train plays a bridging role between the North Atlantic SST and SWC rainfall during boreal spring. Both the observational analysis and two numerical experiments suggest that the North Atlantic SST during boreal spring can induce an anomalous cyclone over BOB by the NRTC teleconnection pattern. The anomalous cyclone over BOB favors moisture transport to SWC, accompanying with significant anomalous ascending motion, and thus results in positive rainfall anomalies in SWC during boreal spring.
部门归属[Li, Gang; Yang, Daoyong] Xichang Satellite Launch Ctr, Xichang, Peoples R China; [Chen, Jiepeng; Wang, Xin] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China; [Luo, Xia; Tan, Yanke] PLA Univ Sci & Technol, Coll Meteorol & Oceanog, Nanjing, Jiangsu, Peoples R China; [Zhou, Wen] City Univ Hong Kong, Sch Energy & Environm, Guy Carpenter Asia Pacific Climate Impact Ctr, Hong Kong, Hong Kong, Peoples R China; [Yan, Hongming] Yunnan Climate Ctr, Kunming, Yunnan, Peoples R China
学科领域Meteorology & Atmospheric Sciences
资助项目LTO
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/17109
专题热带海洋环境国家重点实验室(LTO)
通讯作者wangxin@scsio.ac.cn
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GB/T 7714
Li, G,Chen, JP,Wang, X,et al. Remote impact of North Atlantic sea surface temperature on rainfall in southwestern China during boreal spring[J]. CLIMATE DYNAMICS,2018,50(2018-01-02):541-553.
APA Li, G.,Chen, JP.,Wang, X.,Luo, X.,Yang, DY.,...&wangxin@scsio.ac.cn.(2018).Remote impact of North Atlantic sea surface temperature on rainfall in southwestern China during boreal spring.CLIMATE DYNAMICS,50(2018-01-02),541-553.
MLA Li, G,et al."Remote impact of North Atlantic sea surface temperature on rainfall in southwestern China during boreal spring".CLIMATE DYNAMICS 50.2018-01-02(2018):541-553.
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