The Different Configurations of the East Asian Polar Front Jet and Subtropical Jet and the Associated Rainfall Anomalies over Eastern China in Summer

作者: Dan-Qing Huang , Jian Zhu , Yao-Cun Zhang , An-Ning Huang

DOI: 10.1175/JCLI-D-14-00067.1

关键词: Jet (fluid)EddyClimatologySea surface temperatureGeologyStratosphereZonal and meridionalPolar frontAtmospheric sciencesSubtropicsEast Asia

摘要: AbstractTo investigate the concurrent impacts of East Asian polar front jet (EAPJ) and subtropical (EASJ) on summer rainfall over eastern China, positive (strengthened EAPJ with weakened EASJ) negative (weakened strengthened configurations are identified. In configuration, decreases in northern part China increases southern part, vice versa configuration. The possible mechanisms maintaining two further proposed from perspectives sea surface temperature (SST) synoptic-scale transient eddy activities (STEA). meridional distributed cold–warm SST anomalies North Pacific may induce regional circulation gradient anomalies, which can strengthen weaken EASJ. central La Nina–like related Arctic vortexlike stratosphere, strength...

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