气候变化领域集成服务门户(CCPortal): Influence of longer dry seasons in the Southern Amazon on patterns of water vapor transport over northern South America and the Caribbean

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DOI	10.1007/s00382-018-4285-1
	Influence of longer dry seasons in the Southern Amazon on patterns of water vapor transport over northern South America and the Caribbean
	Agudelo J.; Arias P.A.; Vieira S.C.; Martínez J.A.
发表日期	2019
ISSN	0930-7575
起始页码	2647
结束页码	2665
卷号	52 期号:2020-05-06
英文摘要	Several studies have identified a recent lengthening of the dry season over the southern Amazon during the last three decades. Some explanations to this lengthening suggest the influence of changes in the regional circulation over the Atlantic and Pacific oceans, whereas others point to the influence of vegetation changes over the Amazon rainforest. This study aims to understand the implications of more frequent long dry seasons in this forest on atmospheric moisture transport toward northern South America and the Caribbean region. Using a semi-Langrangian model for water vapor tracking, results indicate that longer dry seasons in the southern Amazon relate to reductions of water vapor content over the southern and eastern Amazon basin, due to significant reductions of evaporation and recycled precipitation rates in these regions, especially during the transition from dry to wet conditions in the southern Amazon. On the other hand, longer dry seasons also relate to enhanced atmospheric moisture content over the Caribbean and northern South America regions, mainly due to increased contributions of water vapor from oceanic regions and the increase of surface moisture convergence over the equatorial region. This highlights the importance of understanding the relative role of regional circulation and local surface conditions on modulating water vapor transport toward continental regions. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Northern South America; Southern Amazon dry season; Water vapor tracking; Water vapor transport
语种	英语
scopus关键词	atmospheric circulation; atmospheric moisture; atmospheric transport; dry season; tracking; vegetation cover; water vapor; Amazonia; Atlantic Ocean; Caribbean Sea
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/146501
作者单位	Grupo de Investigación y Gestión Ambiental (GIGA), Escuela Ambiental, Facultad de Ingeniería, Universidad de Antioquia, Calle 67 #53-108, Of. 10-126, Medellín, Colombia
推荐引用方式 GB/T 7714	Agudelo J.,Arias P.A.,Vieira S.C.,et al. Influence of longer dry seasons in the Southern Amazon on patterns of water vapor transport over northern South America and the Caribbean[J],2019,52(2020-05-06).
APA	Agudelo J.,Arias P.A.,Vieira S.C.,&Martínez J.A..(2019).Influence of longer dry seasons in the Southern Amazon on patterns of water vapor transport over northern South America and the Caribbean.Climate Dynamics,52(2020-05-06).
MLA	Agudelo J.,et al."Influence of longer dry seasons in the Southern Amazon on patterns of water vapor transport over northern South America and the Caribbean".Climate Dynamics 52.2020-05-06(2019).