气候变化领域集成服务门户(CCPortal): Double Tropopauses and the Tropical Belt Connected to ENSO

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DOI	10.1029/2020GL089027
	Double Tropopauses and the Tropical Belt Connected to ENSO
	Wilhelmsen H.; Ladstädter F.; Schmidt T.; Steiner A.K.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	A detailed analysis of double tropopause (DT) occurrences requires vertically well resolved, accurate, and globally distributed information on the troposphere-stratosphere transition zone. Here, we use radio occultation observations from 2001 to 2018 with such properties. We establish a connection between El Niño-Southern Oscillation (ENSO) phases and the distribution of DTs by analyzing the global and seasonal DT characteristics. The seasonal distribution of DTs reveals several hotspot locations, such as near the subtropical jet stream and over high mountain ranges, where DTs occur particularly often. In this study, we detect a higher number of DTs during the cold La Niña state while warmer El Niño events result in lower DT rates, affecting the structure of the tropopause region. Close to the Niño 3 region, this relates to a much lower first lapse rate tropopause altitude during La Niña and corresponds to an apparent narrowing of the tropical belt there. ©2020. The Authors.
英文关键词	Atmospheric pressure; Climatology; Tropics; Distributed information; High mountains; Radio occultations; Seasonal distributions; Southern oscillation; Subtropical jet; Transition zones; Tropopause region; Clouds; El Nino; El Nino-Southern Oscillation; jet stream; La Nina; mountain region; seasonal variation; stratosphere-troposphere interaction; tropopause
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170065
作者单位	Wegener Center for Climate and Global Change (WEGC), University of Graz, Graz, Austria; FWF-DK Climate Change, University of Graz, Graz, Austria; Institute for Geophysics, Astrophysics, and Meteorology/Institute of Physics (IGAM/IP)Graz, Austria; GeoForschungsZentrum Potsdam (GFZ), Potsdam, Germany
推荐引用方式 GB/T 7714	Wilhelmsen H.,Ladstädter F.,Schmidt T.,et al. Double Tropopauses and the Tropical Belt Connected to ENSO[J],2020,47(14).
APA	Wilhelmsen H.,Ladstädter F.,Schmidt T.,&Steiner A.K..(2020).Double Tropopauses and the Tropical Belt Connected to ENSO.Geophysical Research Letters,47(14).
MLA	Wilhelmsen H.,et al."Double Tropopauses and the Tropical Belt Connected to ENSO".Geophysical Research Letters 47.14(2020).