Assessment of Two Different Methods in Predicting Hydrological Drought from the Perspective of Water Demand

Medeiros, Giovana Cristina Santos de; Maia, Adelena Gonçalves; Medeiros, Joana Darc Freire de

doi:10.1007/s11269-019-02218-7

Cited by 11 publications

(8 citation statements)

References 27 publications

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“…In addition, the years identified as dry by SPI have also been identified with the SSI (Figure 5) that note the SSI as useful to hydrological drought study in DRB. Similar results were observed by Marengo et al (2011) on the Amazon basin, by Melo et al (2016) on the Paraná river basin and Medeiros et al (2019), and Marengo et al (2013) to Northeastern Brazil, where meteorological drought affected streamflow and reservoir storage.…”

Section: /10supporting

confidence: 78%

Meteorological and hydrological drought from 1987 to 2017 in Doce River Basin, Southeastern Brazil

Jesus

Amorim

Junqueira

et al. 2020

RBRH

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ABSTRACT Meteorological drought is a natural hazard characterized as below-average precipitation from expected or normal that can affect various economic sectors, and lead to period with inadequate streamflow for established uses of the water (hydrological drought). We aimed to apply the Standardized Precipitation Index (SPI) and Standardized Streamflow Index (SSI) to identify the occurrence and the intensity of droughts in Doce River Basin (DRB), Southeastern Brazil. For this purpose, 71 rain gauge stations and one streamflow station were selected with 30-year monthly historical series (1987 to 2017). The SPI and SSI were calculated for the hydrological year (October-September) and the seasons (Spring, Summer, Fall, and Winter). SPI mapping was performed by geostatistical procedures. Pearson's coefficient was calculated to analyze the influence of meteorological on hydrological drought. The main meteorological drought events, observed in the hydrological years of 1994/95, 2000/01, and a recent and consecutive period of four hydrological years (2013-2017), were mainly influenced by events in spring and summer and, to a lesser extent, in fall. It was observed the influence of the meteorological drought on the hydrological drought on an annual and seasonal scale, except winter, where low precipitation does not influence in the streamflow.

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Section: /10supporting

confidence: 78%

Meteorological and hydrological drought from 1987 to 2017 in Doce River Basin, Southeastern Brazil

Jesus

Amorim

Junqueira

et al. 2020

RBRH

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“…The water deficits recorded in the Armando Ribeiro Gonçalves (RN), Castanhão (CE) and Coremas (PB) reservoirs (statistically significant negative trend at the 1% level) ( Figure 5) also occurred in various other large and small reservoirs in the semiarid region, as described by Martins et al (2017) for the São Francisco Basisn, Azevedo et al (2018) for the Sobradinho reservoir, and Medeiros et al (2019) for the Cruzeta weir (RN). These results corroborate the importance of annual rainfall variation to the water resources in NEB, making it important to continually monitor the hydrometeorological conditions and seasonal climate forecasts in the region.…”

Section: Resultsmentioning

confidence: 54%

“…In this respect, Medeiros et al (2018) analyzing the hydrometeorological impact on the annual storage variation of the three largest reservoirs in the states of Rio Grande do Norte (RN), Paraíba (PB) and Ceará (CE) -Engenheiro Armando Ribeiro Gonçalves, Coremas and Castanhão, respectively -in years marked by extreme precipitation, found that in the wettest year (2004) there were respective increases of 37.3%, 35.09% and 61.37% in the volume stored, while in the driest year (2012) there were reductions of 33.11%, 18.01% and 29.59% in those reservoirs. Besides this, according to Medeiros et al (2019), reservoirs with greater storage capacity are more efficient, and hence are less susceptible to droughts than smaller ones.…”

Section: Introductionmentioning

confidence: 99%

Hydrometeorological conditions in the semiarid and east coast regions of Northeast Brazil in the 2012-2017 period

Medeiros

Oliveira

Gomes

et al. 2021

An. Acad. Bras. Ciênc.

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Various studies have identifi ed that between 2012 and 2017, Brazil's semiarid region suffered severe drought. However, few studies have analyzed whether this drought also affected the eastern coastal region of Northeast Brazil (ENEB). Therefore, the objective of this work is to identify rainfall anomalies in these regions and verify the hydrometeorological impact on reservoirs in the 2012-2017 interval. For this purpose, we used precipitation data and atmospheric variables in the period from 1981 to 2017 to investigate the rainy season and associated dynamic patterns, as well as the consequences of these mechanisms on the variation of the water parameters of important reservoirs. The results indicated that rain events in the ENEB during 2012-2017 presented similar climatological behavior, without the characteristic of a drought event as observed in the semiarid region. The meteorological analyses showed that the combination of convergence with moisture over the Atlantic Ocean possibly favored greater frequency of shallow convective rainfall in ENEB, an important factor to explain the absence of generalized negative anomalies in the region. As a consequence, the reservoirs did not suffer from water collapse, unlike in the semiarid region.

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“…The hydrological drought is analysed using relative measures such as the palmer hydrologic drought index (PHDI), surface water supply index (SWSI) (de Medeiros et al, 2019) or by probabilistic analysis of the standardized precipitation index (SPI), standardized soil storage index (SSI) (Forootan et al, 2019; Guo et al, 2017), and threshold analysis (Cammalleri et al, 2016; Wongchuig Correa et al, 2017). Duration, intensity, and frequency of drought are used as the primary indicators to study the hydrological drought.…”

Section: Introductionmentioning

confidence: 99%

Development and propagation of hydrologic drought from meteorological and agricultural drought in the Mekong River Basin

Palanisamy

Narasimhan

Paul³

et al. 2023

Hydrological Processes

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Mekong River Basin (MRB) experiences extreme droughts and floods frequently, due to the precipitation deficit across the basin. The meteorological droughts will have a profound impact on the distribution of soil moisture and hence agricultural productivity, which will lead to the reduction of surface water resources. It is therefore important to evaluate the deficits in hydrometeorological extremes, that is, precipitation, soil moisture, and streamflow to help decipher how one drought results in the other. In this study, a streamflow deficit index (SDI) has been proposed and applied to understand the changes in hydrology due to the fluctuations in precipitation and soil moisture in the Mekong River Basin (MRB). The study used percent normal (PN), a precipitation deficit index, and soil moisture deficit index (SMDI) to identify the initiation and sustenance of hydrological drought using SDI.The SMDI was obtained from soil moisture simulated using the soil and water assessment tool (SWAT) for the periods of 1980-2008. The study results suggested that the proposed index was able to represent the historical river flow deficit that persisted in the basin in the year 1992. Increasing variation in the streamflow deficit in parts of Thailand, Lao PDR, Vietnam, and Cambodia from the year 1992 was also captured by SDI. The flooding year 2000, which resulted in an economic loss of over 200 million USD, was also effectively captured by the proposed index. The lengthening of the streamflow drought, a metric used to represent drought propagation, was shorter by at least 2 months in forested catchments compared with that of agricultural catchments, which implies that any deficit in precipitation and soil moisture, will have a severe impact on agricultural basins. Similarly, the attenuation of both agricultural and hydrological drought was found to be smaller in forested subbasins than those in agricultural subbasins. The findings of the study will be useful for the timely identification of extreme hydrological events and for planning mitigation measures.

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Assessment of Two Different Methods in Predicting Hydrological Drought from the Perspective of Water Demand

Cited by 11 publications

References 27 publications

Meteorological and hydrological drought from 1987 to 2017 in Doce River Basin, Southeastern Brazil

Meteorological and hydrological drought from 1987 to 2017 in Doce River Basin, Southeastern Brazil

Hydrometeorological conditions in the semiarid and east coast regions of Northeast Brazil in the 2012-2017 period

Development and propagation of hydrologic drought from meteorological and agricultural drought in the Mekong River Basin

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