气候变化领域集成服务门户(CCPortal): Changes in Normalized Difference Vegetation Index in the Orinoco and Amazon River Basins: Links to Tropical Atlantic Surface Temperatures

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DOI	10.1175/JCLI-D-19-0696.1
	Changes in Normalized Difference Vegetation Index in the Orinoco and Amazon River Basins: Links to Tropical Atlantic Surface Temperatures
	Arias P.A.; Martínez J.A.; Mejía J.D.; Pazos M.J.; Espinoza J.C.; Wongchuig-Correa S.
发表日期	2020
ISSN	0894-8755
起始页码	8537
结束页码	8559
卷号	33 期号:19
英文摘要	We analyze the observed relationship between sea surface temperatures (SSTs) over the Atlantic Ocean and the normalized difference vegetation index (NDVI) in the Orinoco and Amazon basins. Monthly correlations between anomalies of NDVI and SSTs are computed for different regions of the Atlantic Ocean. We also use a mixture of observations and reanalysis products to analyze lagged correlations. Our results show that during August–September (i.e., the dry-to-wet transition season), changes in NDVI in the central Amazon and the so-called Arc of Deforestation are associated with precedent changes in the SSTs of the tropical North Atlantic (TNA) and the Caribbean (CABN) during March–June. Anomalous warming of the CABN and TNA generates changes in surface winds and atmospheric moisture transport in the region, decreasing precipitation, with consequent decreases of soil moisture, moisture recycling, and NDVI. An increase in TNA and CABN SSTs during March–June is also associated with an increase of NDVI over the northern Orinoco during June (i.e., the wet season). Unlike in the southern Amazon, precipitation and soil moisture in the Orinoco basin do not exhibit significant changes associated with SSTs. By contrast, atmospheric moisture recycling and transport increase with warmer SSTs in the TNA. Therefore, for the Orinoco, the link between SSTs and NDVI appears to be related not to changes in precipitation but to changes in moisture recycling. However, the causality between these changes needs to be further explored. These findings highlight the contrasting responses of the Amazon and Orinoco basins to Atlantic temperatures and the dominant role of atmospheric moisture transport linking these responses. Ó 2020 American Meteorological Society.
英文关键词	Atmospheric movements; Atmospheric temperature; Deforestation; Recycling; Soil moisture; Surface properties; Surface waters; Tropics; Vegetation; American meteorological societies; Atlantic Ocean; Atmospheric moisture; Normalized difference vegetation index; North Atlantic; Sea surface temperatures; Surface temperatures; Tropical atlantic; Oceanography; atmosphere-biosphere interaction; atmospheric circulation; atmospheric moisture; NDVI; sea surface temperature; surface wind; temperature anomaly; vegetation; Amazon Basin; Atlantic Ocean; Atlantic Ocean (North); Caribbean Islands; Orinoco Basin
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171085
作者单位	Grupo de Ingeniería y Gestión Ambiental,, Escuela Ambiental, Facultad de Ingeniería, Universidad de Antioquia, Medellín, Colombia; Escuela Ambiental, Facultad de Ingeniería, Universidad de Antioquia, Medellín, Colombia; Institut des Géosciences de l’Environnement, Université Grenoble Alpes, IRD, CNRS, Grenoble, France
推荐引用方式 GB/T 7714	Arias P.A.,Martínez J.A.,Mejía J.D.,et al. Changes in Normalized Difference Vegetation Index in the Orinoco and Amazon River Basins: Links to Tropical Atlantic Surface Temperatures[J],2020,33(19).
APA	Arias P.A.,Martínez J.A.,Mejía J.D.,Pazos M.J.,Espinoza J.C.,&Wongchuig-Correa S..(2020).Changes in Normalized Difference Vegetation Index in the Orinoco and Amazon River Basins: Links to Tropical Atlantic Surface Temperatures.Journal of Climate,33(19).
MLA	Arias P.A.,et al."Changes in Normalized Difference Vegetation Index in the Orinoco and Amazon River Basins: Links to Tropical Atlantic Surface Temperatures".Journal of Climate 33.19(2020).