气候变化领域集成服务门户(CCPortal): Variability of regional atmospheric moisture over Northern South America: patterns and underlying phenomena

CCPortal

DOI	10.1007/s00382-018-4172-9
	Variability of regional atmospheric moisture over Northern South America: patterns and underlying phenomena
	Hoyos I.; Cañón-Barriga J.; Arenas-Suárez T.; Dominguez F.; Rodríguez B.A.
发表日期	2019
ISSN	0930-7575
起始页码	893
结束页码	911
卷号	52 期号:2020-01-02
英文摘要	We evaluate the spatio-temporal variability of atmospheric moisture in northern South America. The spatial structure of moisture is discussed in seasonal and interannual time scales. We combine the principal component analysis of moisture flux divergence and the physical information flow to measure the relative influence of global climate phenomena in the leading modes of regional variability. Our results highlight the inherent complexity of spatial structure in this region due to the interaction of the Tropical Andes, the regional circulation changes related to the annual migration of the ITCZ, the low-level jet structures of regional atmospheric transport and the moisture transport from surrounding marine areas. Modes of variability related to oscillations in the tropical and extratropical Atlantic and Tropical Pacific are the most important sources of variability underlying the regional atmospheric moisture. To emphasize ENSO related variability, we propose a seasonal state classification index that unambiguously classifies the local evolution of precipitation in El Niño and La Niña years, showing the occurrence of marked differences in local moisture content in each of these phases. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Information transference; Regional ENSO influence; Seasonal state index; Teleconnections
语种	英语
scopus关键词	atmospheric moisture; atmospheric transport; El Nino-Southern Oscillation; global climate; intertropical convergence zone; moisture content; moisture flux; moisture transfer; regional climate; teleconnection; Andes; South America
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146613
作者单位	Facultad de Ingeniería, Grupo GAIA. Universidad de Antioquia, SIU/UdeA, Calle 70 N 52-21, Medellín, Colombia; Instituto de Física, Grupo de Fundamentos y Enseñanza de la Física y los Sistemas Dinámicos, Universidad de Antioquia, Medellín, Colombia; Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign, Champaign, United States
推荐引用方式 GB/T 7714	Hoyos I.,Cañón-Barriga J.,Arenas-Suárez T.,et al. Variability of regional atmospheric moisture over Northern South America: patterns and underlying phenomena[J],2019,52(2020-01-02).
APA	Hoyos I.,Cañón-Barriga J.,Arenas-Suárez T.,Dominguez F.,&Rodríguez B.A..(2019).Variability of regional atmospheric moisture over Northern South America: patterns and underlying phenomena.Climate Dynamics,52(2020-01-02).
MLA	Hoyos I.,et al."Variability of regional atmospheric moisture over Northern South America: patterns and underlying phenomena".Climate Dynamics 52.2020-01-02(2019).