Effect of the westward-propagating zonal wind anomaly on the initial development of quasi-biweekly oscillation over the South China Sea during early summer

作     者：CHEN Guang-Hua WANG Xu CHEN Guang-Hua WANG Xu

作者机构：Center for Monsoon System ResearchInstitute of Atmospheric PhysicsChinese Academy of Science 

出 版 物：《Atmospheric and Oceanic Science Letters》 (大气和海洋科学快报（英文版）)

年 卷 期：2017年第10卷第1期

页      面：89-95页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：supported financially by the National Basic Research Program of China[grant number 2014CB953902] the National Natural Science Foundation of China[grant numbers 41275001 and 41475074] 

主　　题：Westward-propagating zonal wind quasi-biweekly oscillation South China Sea early summer 

摘      要：The characteristics of quasi-biweekly oscillation（QBWO） over the South China Sea during early summer are *** results demonstrate that QBWO convection and the meridional wind anomaly exhibit local variation,while the zonal wind anomaly displays zonal ***,emergence of the zonal wind anomaly precedes the enhancement of QBWO convection,suggesting the zonally propagating zonal wind anomaly may play a key role in initiating the development of QBWO *** of the convergence of moisture flux and divergence tendency indicate that QBWO convection is primarily modulated by eddy *** the contributing factors in the divergence tendency,the β effect associated with the zonally-propagating zonal wind anomaly makes an appropriate phase difference with the eddy divergence,which can contribute to the convergence tendency in the initial stage of *** a result,QBWO convection and the meridional wind anomaly are enhanced,thus facilitating the initial development of QBWO convection over the SCS during early summer.