Analysis of the 2012-2016 drought in the northeast Brazil and its impacts on the Sobradinho water reservoir

Azevedo, Samara; Cardim, Guilherme Pina; Puga, F.; Singh, Ramesh P.; Silva, Erivaldo Antônio da

doi:10.1080/2150704x.2018.1437290

Cited by 45 publications

(38 citation statements)

References 14 publications

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“…The northeast of Brazil (NEB) has experienced one of its worst droughts ever recorded, from 2012 to 2018, leading to devastating widespread impacts on water storage, agriculture, livestock, and industry [1][2][3][4][5][6][7][8][9]. Solely in Ceará State, 39 out of 153 monitored reservoirs completely collapsed, another 42 reservoirs reached their minimum operating water level, and 52% of the State's municipalities experienced water supply interruptions by the end of 2016 [10].…”

Section: Introductionmentioning

confidence: 99%

Copula-Based Multivariate Frequency Analysis of the 2012–2018 Drought in Northeast Brazil

Filho

Martins

et al. 2020

Water

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The 2012–2018 drought was such an extreme event in the drought-prone area of Northeast Brazil that it triggered a discussion about proactive drought management. This paper aims at understanding the causes and consequences of this event and analyzes its frequency. A consecutive sequence of sea surface temperature anomalies in the Pacific and Atlantic Oceans, at both the decadal and interannual scales, led to this severe and persistent drought. Drought duration and severity were analyzed using run theory at the hydrographic region scale as decision-makers understand impact analysis better at this scale. Copula functions were used to properly model drought joint characteristics as they presented different marginal distributions and an asymmetric behavior. The 2012–2018 drought in Ceará State had the highest mean bivariate return period ever recorded, estimated at 240 years. Considering drought duration and severity simultaneously at the level of the hydrographic regions improves risk assessment. This result advances our understanding of exceptional events. In this sense, the present work proposes the use of this analysis as a tool for proactive drought planning.

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Section: Introductionmentioning

confidence: 99%

Copula-Based Multivariate Frequency Analysis of the 2012–2018 Drought in Northeast Brazil

Filho

Martins

et al. 2020

Water

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“…Yet, continued drought risk under climate change increasingly places pressure on the region's existing physical infrastructure and governance capacity to manage water for cities (Chou et al 2014;Fonseca et al 2017). Recent drought in northeast Brazil (2011-2017) revealed significant weaknesses of existing urban water systems (Azevedo et al 2018;Marengo et al 2018), indicating that future climate change could further erode the sustainability of urban water systems.…”

Section: Methodsmentioning

confidence: 99%

Urban Household Water Insecurity from the Margins: Perspectives from Northeast Brazil

Tomaz

Jepson

Santos

2020

The Professional Geographer

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a Urban water security strategies commonly pivot around supply-side initiatives to mitigate scarcity, forecasted population growth, or anticipated climate change; yet, scholars have begun to expand urban water security scholarship by including alternative frameworks that incorporate equity into the analysis. Our study seeks to contribute to this equity turn by opening the investigative aperture on urban water security research in several aspects. We address the question of water security for whom, and turn our attention to the urban resident and household. We shift empirical focus to smaller urban centers in the Global South, and we develop a new assessment tool for water insecurity, the Household Water Insecurity Index (HWISI), to assess differences across the urban waterscape. We conducted this research in Forquilha (Cear a, Brazil), which represents an overlooked class of small urban centers common across Brazil's semiarid region. We draw on qualitative and quantitative data to describe household water insecurity using the HWISI. The prevalence of household water insecurity is variable, with a quarter of the population experiencing moderate to severe household water insecurity. In addition, analysis of the factors within the HWISI demonstrated how specific water insecurity domains push households across water insecurity thresholds.

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“…-1.6 a -2.0 Sequía excepcional Pérdida de cultivos/ pastizales excepcional y generalizada; riesgo inminente de incendio; escasez hídrica en represas, ríos y pozos; creación de un estado de emergencia. nal (Azevedo et al, 2018). Este escenario hace que la región semiárida brasileña sea altamente vulnerable a la variabilidad climática, particularmente a las sequías (Marengo y Bernasconi, 2015).…”

Section: Sequía Moderadaunclassified

Un Siglo de Sequías: ¿Por qué las Políticas de Agua no Desarrollaron la Región Semiárida Brasileña?

Buriti

Barbosa

Paredes‐Trejo

et al. 2020

Rev. bras. meteorol.

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Resumen El semiárido brasileño frecuentemente se ve afectado por sequías prolongadas. Durante el período 2010-2017, la región semiárida brasileña enfrentó la “sequía del siglo”, considerada la peor registrada en la historia del país. Este artículo tiene como objetivo hacer una evaluación histórica de diferentes fases de las políticas públicas implementadas en la región, con el fin de promover la convivencia con la sequía. Con base en una investigación histórica documental y el monitoreo satelital de los impactos de las sequías, se analizaron las acciones gubernamentales que contribuyeron a brindar una mayor disponibilidad de agua en la región semiárida brasileña, con énfasis en el análisis de la efectividad de la gestión del agua y los impactos de las tecnologías sociales para el almacenamiento del agua de lluvia en comunidades rurales dispersas. Los resultados de la investigación evidenciaron que las políticas implementadas a lo largo de la historia, con frecuencia en un modelo centralizado, no fueron efectivas en el desarrollo de la región. Recientemente, el acceso a las tecnologías sociales hídricas descentralizadas en las zonas rurales, están mostrando resultados positivos. Sin embargo, aún no es una realidad universal para la población que vive en la región. Por tanto, se concluye que las políticas hídricas siguen siendo insuficientes para hacer frente a los impactos de las sequías. El estudio aporta importantes lecciones históricas para la gestión del agua en la actualidad.

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Analysis of the 2012-2016 drought in the northeast Brazil and its impacts on the Sobradinho water reservoir

Cited by 45 publications

References 14 publications

Copula-Based Multivariate Frequency Analysis of the 2012–2018 Drought in Northeast Brazil

Copula-Based Multivariate Frequency Analysis of the 2012–2018 Drought in Northeast Brazil

Urban Household Water Insecurity from the Margins: Perspectives from Northeast Brazil

Un Siglo de Sequías: ¿Por qué las Políticas de Agua no Desarrollaron la Región Semiárida Brasileña?

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