气候变化领域集成服务门户(CCPortal): Modulation of bay of bengal tropical cyclone activity by the madden-julian oscillation

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DOI	10.1016/j.atmosres.2019.06.010
	Modulation of bay of bengal tropical cyclone activity by the madden-julian oscillation
	Bhardwaj P.; Singh O.; Pattanaik D.R.; Klotzbach P.J.
发表日期	2019
ISSN	0169-8095
起始页码	23
结束页码	38
卷号	229
英文摘要	The influence of the Madden-Julian oscillation (MJO) on global tropical cyclone (TC) activity has been well documented in many earlier studies. However, no prior studies have focused specifically on the MJO's impacts on TCs in the Bay of Bengal (BoB). Therefore, the present study examines the impact of the MJO on BoB TC activity during the two peak TC periods i.e. April–June (AMJ) and October–December (OND) from 1974 to 2015. The MJO considerably modulates various measures of TC activity in the BoB, including the number of TCs, the number of TC days, accumulated cyclone energy, the power dissipation index, TC genesis location and TC tracks. TC activity is significantly enhanced (suppressed) over the BoB when the convectively active MJO phase is positioned over the eastern Indian Ocean and the Maritime Continent (the Western Hemisphere and Africa). Alterations in the TC genesis locations and their tracks are more pronounced in OND than in AMJ. These changes in TC characteristics are mainly attributed to MJO-driven modulations in large-scale environmental conditions such as deep convection, mid-tropospheric relative humidity, sea surface temperature, sea level pressure, lower- and upper-level winds and vertical wind shear. A comprehensive knowledge of the MJO-TC relationship may be beneficial for short-term predictions of TC activity in the BoB. © 2019 Elsevier B.V.
英文关键词	Bay of Bengal; Convective activity; Environmental conditions; Madden-Julian oscillation; Tropical cyclones
语种	英语
scopus关键词	Hurricanes; Modulation; Sea level; Storms; Surface waters; Tropics; Bay of Bengal; Convective activity; Environmental conditions; Madden-Julian oscillation; Tropical cyclone; Climatology; convective system; environmental conditions; Madden-Julian oscillation; storm track; tropical cyclone; Bay of Bengal; Indian Ocean; Indian Ocean (East)
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162011
作者单位	Department of Geography, Kurukshetra University, Kurukshetra, 136119, India; India Meteorological Department, Mausam Bhawan, Lodhi Road, New Delhi, 110003, India; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States
推荐引用方式 GB/T 7714	Bhardwaj P.,Singh O.,Pattanaik D.R.,et al. Modulation of bay of bengal tropical cyclone activity by the madden-julian oscillation[J],2019,229.
APA	Bhardwaj P.,Singh O.,Pattanaik D.R.,&Klotzbach P.J..(2019).Modulation of bay of bengal tropical cyclone activity by the madden-julian oscillation.Atmospheric Research,229.
MLA	Bhardwaj P.,et al."Modulation of bay of bengal tropical cyclone activity by the madden-julian oscillation".Atmospheric Research 229(2019).