气候变化领域集成服务门户(CCPortal): Quasi-biweekly oscillation of the bay of bengal–East Asia

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DOI	10.1175/JCLI-D-19-0856.1
	Quasi-biweekly oscillation of the bay of bengal–East Asia–Pacific Teleconnection in boreal summer
	Gui S.; Yang R.
发表日期	2020
ISSN	0894-8755
起始页码	7643
结束页码	7662
卷号	33 期号:17
英文摘要	The study reported in this paper used ERA-Interim reanalysis data to investigate the intraseasonal variability of the Bay of Bengal (BOB)–East Asia–Pacific teleconnection (BEAP) during the summer between 1979 and 2016. Over this period, the intraseasonal oscillation of the BEAP fell mainly within the quasi-biweekly oscillation (QBWO) band. Variations in atmospheric circulation and precipitation, which may contribute to extreme weather events, showed a significant correlation with the phase transition of the BEAP from the BOB to East Asia and the Pacific. The evolution of the BEAP–QBWO is closely associated with the westward propagation of convective anomalies to the southwestern BOB. Dynamical analysis revealed that anomalous vertical motion coupled with anomalous convective activity over the southern BOB plays an important role in leading the phase propagation of the BEAP–QBWO, and that the horizontal advection anomalies can strengthen the BEAP–QBWO. Linear baroclinic model experiments confirmed that variations in convection over the southern BOB play a leading role in the BEAP–QBWO phase changes. Further research suggests that the boreal summer intraseasonal oscillation can trigger the BEAP–QBWO through downstream propagation of convective disturbances to the southern BOB. This study provides insights into the cause and effect of the BEAP–QBWO, which will help to improve understanding of flood and drought patterns in the Asia–Pacific region. © 2020 American Meteorological Society.
英文关键词	Climate models; Climatology; Atmospheric circulation; Boreal summer intraseasonal oscillation; Convective activity; Dynamical analysis; Extreme weather events; Horizontal advection; Intraseasonal oscillations; Intraseasonal variability; Tropical engineering; atmospheric circulation; atmospheric dynamics; quasi-biennial oscillation; seasonal variation; teleconnection; wave propagation; Bay of Bengal; Indian Ocean
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171135
作者单位	Institute of International Rivers and Eco-security, Yunnan University, Kunming, China; Department of Atmospheric Sciences, Yunnan University, Kunming, China
推荐引用方式 GB/T 7714	Gui S.,Yang R.. Quasi-biweekly oscillation of the bay of bengal–East Asia–Pacific Teleconnection in boreal summer[J],2020,33(17).
APA	Gui S.,&Yang R..(2020).Quasi-biweekly oscillation of the bay of bengal–East Asia–Pacific Teleconnection in boreal summer.Journal of Climate,33(17).
MLA	Gui S.,et al."Quasi-biweekly oscillation of the bay of bengal–East Asia–Pacific Teleconnection in boreal summer".Journal of Climate 33.17(2020).