Scopus记录号: 2-s2.0-85044041376
论文题名: Variability of regional atmospheric moisture over Northern South America: patterns and underlying phenomena
作者: Hoyos I. ; Cañón-Barriga J. ; Arenas-Suárez T. ; Dominguez F. ; Rodríguez B.A.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2019
卷: 52, 期: 2019-01-02 起始页码: 893
结束页码: 911
语种: 英语
英文关键词: Information transference
; Regional ENSO influence
; Seasonal state index
; Teleconnections
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. 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122456
Appears in Collections: 气候变化事实与影响
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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
Recommended Citation:
Hoyos I.,Cañón-Barriga J.,Arenas-Suárez T.,et al. Variability of regional atmospheric moisture over Northern South America: patterns and underlying phenomena[J]. Climate Dynamics,2019-01-01,52(2019-01-02)