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M. GONZÁLEZ,C. S. VERA,B. LIEBMANN,J. A. MARENGO,V. KOUSKY,D. ALLURED
The objective of this work is to provide a detailed description of the onset of the South American Monsoon based on precipitation observations available over tropical and subtropical South America. The analysis was also performed using outgoing longw...
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E. B. DE SOUZA,T. AMBRIZZI
The changes in the Hadley and Walker cells and their respective impacts on the South American rainfall during the ENSO episodes observed in the decade of 80, were investigated through cross-sections analyses of the atmospheric circulation in altitude,...
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Luis Cid-Serrano,Sandra M. Ramírez,Eric J. Alfaro,David B. Enfield
Pág. 191 - 203
The objective of this study was to determine the probability of occurrence of wet or dry season events, by means of estimating latitudinal profiles for the association between El Niño Southern-Oscillation and the rainfall along the west coast of Central ...
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Paula Fonseca,José Augusto Veiga,Francis Correia,Chou Chan,André Lyra
The Brazilian Amazon (BAMZ) and Northeast Brazil (NEB) regions have been facing intense climate extremes since the beginning of 21st century. In BAMZ, these climate extremes can modify the Amazon forest and its essential role in the local and remote clim...
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J. M. QUINTANA,P. ACEITUNO
The evolution of annual rainfall along the west coast of South America from 30 to 43º S (central Chile) is analyzed for the period 1900-2007. A prevailing negative trend in annual rainfall has been documented for this region in several previous studies. ...
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Nayara Arroxelas dos Santos,Anderlan Henrique Batista Siqueira,Maria Luciene Dias de Melo
Este estudo teve como objetivo analisar e avaliar qual o grau de correlação entre a precipitação sobre a América do Sul e as oscilações que ocorrem sobre a região do atlântico norte, Oscilação Multidecadal do Atlântico (OMA), sobre o oceano, e Oscilação ...
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Vinicius Albuquerque de Almeida,Edilson Marton,Ana M. B. Nunes
Pág. 1 - 10
The South American monsoon system (SAMS) refers to the strong seasonal variability in precipitation observed over South America, with high precipitation amounts during the summer while winter is the driest season. The aim of this work is to understand ho...
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Adelia Perla Alessandro
Abstract: In southern South America and for the period 1960-2011, frequencies and trends of seasonal blocking situations (Bs) determined at 100º, 70º and 40ºW (B100, B70 and B40) are estimated. The effect of such situations on temperature and...
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Mariano S. Alvarez, Carolina S. Vera and George N. Kiladis
Intraseasonal (IS) variability in South America is efficiently described through the first empirical orthogonal function of filtered precipitation or outgoing longwave radiation (OLR) anomalies. In the 30?90-day band, the leading OLR pattern between Octo...
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María Fernanda Cabré,Silvina Solman,Mario Nuñez
This work focuses on evaluating the ability of the MM5 regional model to represent the basic features of present climate over South America. The spatial distribution of seasonal means and its interannual variability as well as annual cycles for precipita...
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NELSON J. FERREIRA,A. A. CORREIA,MARÍA C.V. RAMÍREZ
This paper analyzes the synoptic scale features of the upper and lower level tropospheric circulation over tropical South America during the first Atmospheric Mesoscale Campaign in the Wet Season (WETAMC) of the Large Scale Biosphere ? Atmosphere Expe...
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Anoop Kumar Shukla, Chandra Shekhar Prasad Ojha, Rajendra Prasad Singh, Lalit Pal and Dafang Fu
Satellite based rainfall estimation techniques have emerged as a potential alternative to ground based rainfall measurements. The Tropical Rainfall Measuring Mission (TRMM) precipitation, in particular, has been used in various climate and hydrology base...
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Gaohua Ji, Karl E. Havens, John R. Beaver, Rolland S. Fulton, III
Pág. 1 - 20
A major attribute of the Earth?s climate that may be affected by global warming is the amplitude of variability in teleconnections. These global-scale processes involve links between oceanic conditions in one locale and weather in another, often distant,...
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Gaohua Ji, Karl E. Havens, John R. Beaver and Rolland S. Fulton III
A major attribute of the Earth?s climate that may be affected by global warming is the amplitude of variability in teleconnections. These global-scale processes involve links between oceanic conditions in one locale and weather in another, often distant,...
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Alejandra Volpedo
Environmental changes together with other stressors, such as habitat destruction, may cause widespread extinctions, decrease in biodiversity and disrupt natural communities, resulting in novel species assemblages. South America has a large diversity of f...
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Alejandra Volpedo
Environmental changes together with other stressors, such as habitat destruction, may cause widespread extinctions, decrease in biodiversity and disrupt natural communities, resulting in novel species assemblages. South America has a large diversity of f...
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ERICK J. ALFARO,LUIS CID
Several studies had shown that the anomalies of the sea surface temperature of the Tropical Atlantic and Pacific Oceans, are related to variations in the duration and timing of the rainy season in Central America. Cluster analysis was used to identify co...
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Hernán D. Salas, Juliana Valencia, Alejandro Builes-Jaramillo and Alejandro Jaramillo
The synoptic mode of variability (SMV) refers to changes in atmospheric conditions over periods ranging from 2 to 10 days. In tropical regions, this variability is driven by tropical waves that have a clear signal on the wavenumber?frequency power spectr...
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