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The Role of Amazon Basin Moisture on the Atmospheric Branch of the Hydrological Cycle: a Lagrangian Analysis : Volume 11, Issue 1 (22/01/2014)

By Drumond, A.

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Book Id: WPLBN0004011893
Format Type: PDF Article :
File Size: Pages 24
Reproduction Date: 2015

Title: The Role of Amazon Basin Moisture on the Atmospheric Branch of the Hydrological Cycle: a Lagrangian Analysis : Volume 11, Issue 1 (22/01/2014)  
Author: Drumond, A.
Volume: Vol. 11, Issue 1
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Drumond, A., Nieto, R., Marengo, J., Moreira, L., Gimeno, L., & Ambrizzi, T. (2014). The Role of Amazon Basin Moisture on the Atmospheric Branch of the Hydrological Cycle: a Lagrangian Analysis : Volume 11, Issue 1 (22/01/2014). Retrieved from

Description: Ephyslab, Facultad de Ciencias, UVIGO, Ourense, Spain. We used a Lagrangian model (FLEXPART) and the 1979–2012 ERA Interim reanalysis data to investigate the role of Amazon Basin moisture in the regional hydrological budget along the year. FLEXPART computes budgets of evaporation minus precipitation by calculating changes in the specific humidity along forward and backwards trajectories. The Tropical Atlantic (TA) is the major remote moisture source for Amazon Basin. Northern TA contributes during the Austral Summer mainly, while the contribution of southern TA prevails in the rest of the year. On the other hand, moisture contribution from Amazon Basin occurs for southeastern South America predominantly. A focus was given for the modulation of ENSO over the inter annual variations in the hydrological budget over Amazon. During El Niño events, the contribution from NA increases from June/year 0 to January/year 1 slightly and the contribution from SA is enhanced during Austral Autumn/year 1. Enhanced transport from Amazon towards Southeastern South America prevails during an El Niño episode.

The role of Amazon Basin moisture on the atmospheric branch of the hydrological cycle: a Lagrangian analysis

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