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
刊名CLIMATE DYNAMICS
2018
卷号50期号:2018-01-02页码:541-553
通讯作者wangxin@scsio.ac.cn
英文摘要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.
学科主题Meteorology & Atmospheric Sciences
内容类型期刊论文
源URL[http://ir.scsio.ac.cn/handle/344004/17109]  
专题南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式
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.,...&Yan, HM.(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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