A quick look at the 2012 record flood in the Amazon Basin

Satyamurty, Prakki; Costa, Cláudia Priscila Wanzeler da; Manzi, A. O.; Cândido, Luiz Antônio

doi:10.1002/grl.50245

Cited by 85 publications

(86 citation statements)

References 19 publications

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“…Most of these kinds of events have been reported more frequently in the Amazon region during the last decade (Marengo et al 2011, Espinoza et al 2011, Satyamurty et al 2013. According to these papers, abundant rainfall, especially in the western Amazon, has caused intense floods along the river's main channel, affecting human and natural systems , Espinoza et al 2013.…”

Section: Extreme Hydrologic Events In Amazoniamentioning

confidence: 99%

Preliminary Analysis of Potential for River Hydrokinetic Energy Technologies in the Amazon River

Filizola¹,

Melo²,

Armijos³

et al. 2015

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The Inter-American Development Bank (IDB) produced this report for the Sustainable Energy for All Americas initiative. A team of experts on Amazon hydrology from the Universidade Federal do Amazonas (UFAM) based in Manaus, Amazonas, Brazil carried out the work. This report analyzes existing hydrological data and other available information in order to determine highlevel feasibility for the deployment of River Hydrokinetic Energy technology in the Amazon River Basin. The investigation is based on an analysis of the ORE-HYBAM database (www.orehybam.org). Eight sites were chosen from the database and analyzed for velocity (water speed) and discharge data, while also considering existing Acoustic Doppler Current Profiler (ADCP) images.The first part of the report provides an overview of the database and data used, as well as of the performed analysis. The second part (results) describes the analysis via graphs and tables of detailed information about the sites investigated. It includes maps with the geographic distribution of the sites and associated data, Google Earth images from each site with an analysis of the river section, and ADCP images. The annex includes graphs showing the results of discharge and velocity analysis.

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Section: Extreme Hydrologic Events In Amazoniamentioning

confidence: 99%

Preliminary Analysis of Potential for River Hydrokinetic Energy Technologies in the Amazon River

Filizola¹,

Melo²,

Armijos³

et al. 2015

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“…Recent studies have also pointed to the importance of the tropical Atlantic (TA) in the modulation of the Amazon climate (Yoon and Zeng, 2010), as observed during the 2005 and 2010 drought events (e.g. Marengo et al, 2008;Lewis et al, 2011), as well as during the 2012 flood in the Amazon River (Satyamurty et al, 2013b). According to Servain (1991), the Atlantic Meridional Mode (AMM), also known as the meridional sea surface temperature (SST) gradient, may be considered one of the main low-frequency SST variability modes in the tropical Atlantic, and its extreme episodes are characterised by an anomalous interhemispheric gradient structure.…”

Section: Introductionmentioning

confidence: 99%

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

Drumond

Marengo

Ambrizzi

et al. 2014

Hydrol. Earth Syst. Sci.

124

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Abstract. We used a Lagrangian model (FLEXPART) together with the 1979-2012 ERA-Interim reanalysis data to investigate the role of the moisture in the Amazon Basin in the regional hydrological budget over the course of the year. FLEXPART computes budgets of evaporation minus precipitation by calculating changes in the specific humidity along forward and backward trajectories. The tropical Atlantic is the most important remote moisture source for the Amazon Basin. The tropical North Atlantic (NA) mainly contributed during the austral summer, while the contribution of the tropical South Atlantic (SA) prevailed for the remainder of the year. At the same time, the moisture contribution from the Amazon Basin itself is mainly for moisture supplying the southeastern South America. The 33-year temporal domain allowed the investigation of some aspects of the interannual variability of the moisture transport over the basin, such as the role of the El Niño Southern Oscillation (ENSO) and the Atlantic Meridional Mode (AMM) on the hydrological budget. During the peak of the Amazonian rainy season (from February to May, FMAM) the AMM is associated more with the interannual variations in the contribution from the tropical Atlantic sources, while the transport from the basin towards the subtropics responds more to the ENSO variability. The moisture contribution prevailed from the SA (NA) region in the years dominated by El Niño/positive AMM (La Niña/negative AMM) conditions. The transport from the Amazon towards the subtropics increased (reduced) during El Niño (La Niña) years.

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“…Over the past 10 years the Amazon basin has experienced frequent flood and drought conditions [2]- [5] that directly impact the lives of its people. It is known that flood and drought conditions are strongly related to Pacific and Atlantic SST Sea Surface Temperature) anomalies, which affect the quantity of moisture that is available to converge/diverge over the Amazon region [6]. However, little is known about the short period extreme rainfall events that frequently impact the Amazon region.…”

Section: Introductionmentioning

confidence: 99%

Extreme Rainfall Events over the Amazon Basin Produce Significant Quantities of Rain Relative to the Rainfall Climatology

Brito¹,

Veiga²,

Yoshida³

2014

ACS

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Although much effort has been made to characterize and understand extreme rainfall's causes and effects, little is known about their frequency and intensity. Moreover, knowledge about their contribution to the total rainfall climatology is still minimal, especially over the Amazon where rainfall data are very scarce. In this paper we propose to classify extreme rainfall events by type and analyze their frequency and intensity over South America with a focus on the Amazon basin. Gridded daily data from the MERGE/CPTEC product over a period of 15 years (1998-2013) was used. An adaptation of Rx5d climate index was applied to select different kinds of extreme rainfall for the purpose of quantifying their frequency and intensity as well as their contribution to the accumulated rainfall climatology. According to the results, all kinds of extreme rainfall events can be observed over the studied area. However, the quantity of rainfall produced by each type is different, and consequently their percent contributions to the total accumulated rainfall climatology also differ. For example: in the Amazon region EET-I is responsible for 15% -40% of the total accumulated rainfall. Moreover, in the Brazilian northeast there are regions where EET-I exceeds 40% of the total rainfall. In northeast Brazil EET-II is responsible up to 30% of the total accumulated rainfall. EET-III is responsible for 5% -15% in the Amazon basin, 25% -45% in northeast Brazil and 10% -45% over Roraima State. Area-mean time variation shows that the quantity of rainfall extremes over the

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A quick look at the 2012 record flood in the Amazon Basin

Cited by 85 publications

References 19 publications

Preliminary Analysis of Potential for River Hydrokinetic Energy Technologies in the Amazon River

Preliminary Analysis of Potential for River Hydrokinetic Energy Technologies in the Amazon River

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

Extreme Rainfall Events over the Amazon Basin Produce Significant Quantities of Rain Relative to the Rainfall Climatology

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