Mapping global patterns of drought risk: An empirical framework based on sub-national estimates of hazard, exposure and vulnerability

Carrão, Hugo; Naumann, Gustavo; Barbosa, Paulo

doi:10.1016/j.gloenvcha.2016.04.012

Cited by 352 publications

(255 citation statements)

References 61 publications

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“…Shiferaw et al [32] adopt a similar approach when they conceive drought vulnerability as "the socioeconomic and biophysical characteristics of the region that make it susceptible to the adverse effects of drought". Likewise, Carrão et al [33], in a global mapping of drought risk, understand drought vulnerability as "a reflection of the state of the individual and collective social, economic and infrastructural factors of a region at hand". In some way or another, the contextual framework has prevailed in studies of drought vulnerability, from the early work of Keenan and Krannich [34] and Wilhelmi and Wilhite [35] to more recent ones carried out by Naumann et al [31] and Carrão et al [33], as corroborated by Zarafshani et al [16] in their latest review of the topic.…”

Section: The Epistemic Divorcementioning

confidence: 99%

“…Likewise, Carrão et al [33], in a global mapping of drought risk, understand drought vulnerability as "a reflection of the state of the individual and collective social, economic and infrastructural factors of a region at hand". In some way or another, the contextual framework has prevailed in studies of drought vulnerability, from the early work of Keenan and Krannich [34] and Wilhelmi and Wilhite [35] to more recent ones carried out by Naumann et al [31] and Carrão et al [33], as corroborated by Zarafshani et al [16] in their latest review of the topic. This fact reveals that the use of integral frameworks such as the one adopted in this study has been practically non-existent in the discussion and proposals aimed at the construction of standard approaches for drought vulnerability assessment [6].…”

Section: The Epistemic Divorcementioning

confidence: 99%

“…In the case of drought, several studies have assessed the vulnerability to this socio-natural disaster following this approach [31][32][33][34][35][44][45][46]. From a quantitative point of view, most of these studies establish vulnerability metrics based on so-called composite indicators (CI) [47,48].…”

Section: The Indicator-based Approach For Vulnerability Quantificationmentioning

confidence: 99%

“…From a quantitative point of view, most of these studies establish vulnerability metrics based on so-called composite indicators (CI) [47,48]. A recent work in this line was done by Naumann et al [31], who proposed a Drought Vulnerability Indicator (DVI) in studies carried out in Africa, while Carrão et al [33] and Wu et al [46] expanded this "indicator-based" perspective to a global scale. A common aspect of these studies, which expresses the weakness of CI procedures [48], is that the authors acknowledge the usual limitations of this kind of approach: (a) the need for an adequate theoretical framework that supports the selection of the components of the indicator; (b) the presence of subjectivity in the weight of the selected variables and (c) the difficulty of validation of such indicators in terms of a causal relationship between them and the drought impact measures.…”

Section: The Indicator-based Approach For Vulnerability Quantificationmentioning

confidence: 99%

See 3 more Smart Citations

Reconciling Drought Vulnerability Assessment Using a Convergent Approach: Application to Water Security in the Elqui River Basin, North-Central Chile

Núñez

Vergara

Leyton

et al. 2017

Water

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Drought has been, is and most likely will remain one of the most significant socio-natural disasters affecting society and the environment worldwide. One priority objective in the adoption of national drought policies is to promote standardized approaches to vulnerability assessment. To reach this objective, however, there is a need to address the noticeable lack of reconciliation between the two major epistemic frameworks that have been used to determine who is vulnerable and why: the so-called outcome and contextual frameworks. This study presents a novel procedure called the convergent approach to assess drought vulnerability under an integral framework. The procedure has been applied to the study of the vulnerability of water security to drought in water-use sectors in a basin located in north-central Chile. The study is justified by the role that drought plays as the major threat to water security in a context of global water crisis. The results show that the convergent approach outperforms traditional procedures such as those based on composite indicators, showing sound robustness and reaching sufficient levels of reliability and validity. The potential expansion of this approach to other applications, such as those related to global estimations of vulnerability to drought, is also discussed.

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Section: The Epistemic Divorcementioning

confidence: 99%

Section: The Epistemic Divorcementioning

confidence: 99%

Section: The Indicator-based Approach For Vulnerability Quantificationmentioning

confidence: 99%

Section: The Indicator-based Approach For Vulnerability Quantificationmentioning

confidence: 99%

See 2 more Smart Citations

Reconciling Drought Vulnerability Assessment Using a Convergent Approach: Application to Water Security in the Elqui River Basin, North-Central Chile

Núñez

Vergara

Leyton

et al. 2017

Water

View full text Add to dashboard Cite

show abstract

“…The regions of drought have been expanding and the degree of drought has been gradually increasing across the globe [2]. As a result, the issues of drought have attracted extensive attention [3].…”

Section: Introductionmentioning

confidence: 99%

Response of Grassland Degradation to Drought at Different Time-Scales in Qinghai Province: Spatio-Temporal Characteristics, Correlation, and Implications

et al. 2017

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Grassland, as the primary vegetation on the Qinghai-Tibet Plateau, has been increasingly influenced by water availability due to climate change in last decades. Therefore, identifying the evolution of drought becomes crucial to the efficient management of grassland. However, it is not yet well understood as to the quantitative relationship between vegetation variations and drought at different time scales. Taking Qinghai Province as a case, the effects of meteorological drought on vegetation were investigated. Multi-scale Standardized Precipitation Evapotranspiration Index (SPEI) considering evapotranspiration variables was used to indicate drought, and time series Normal Difference Vegetation Index (NDVI) to indicate the vegetation response. The results showed that SPEI values at different time scales reflected a complex dry and wet variation in this region. On a seasonal scale, more droughts occurred in summer and autumn. In general, the NDVI presented a rising trend in the east and southwest part and a decreasing trend in the northwest part of Qinghai Province from 1998 to 2012. Hurst indexes of NDVI revealed that 69.2% of the total vegetation was positively persistent (64.1% of persistent improvement and 5.1% of persistent degradation). Significant correlations were found for most of the SPEI values and the one year lagged NDVI, indicating vegetation made a time-lag response to drought. In addition, one month lagged NDVI made an obvious response to SPEI values at annual and biennial scales. Further analysis showed that all multiscale SPEI values have positive relationships with the NDVI trend and corresponding grassland degradation. The study highlighted the response of vegetation to meteorological drought at different time scales, which is available to predict vegetation change and further help to improve the utilization efficiency of water resources in the study region.

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Urban responses to restrictive conservation policy during drought

Palazzo

Liu

Stillinger

et al. 2017

Water Resources Research

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With climate change, the extent, severity, and frequency of droughts around the world are expected to increase. This study analyzed the ability of water districts to meet mandatory urban water conservation targets, which are a common policy response to drought. During California's recent record‐breaking drought, a 25% state‐wide use reduction objective was set and met. However, only 50% of urban water districts analyzed in this study reached their individual conservation target, which offers an opportunity to evaluate the factors associated with successful water use reduction. The findings show that the inclusion of water districts in the polycentric import structure may improve water conservation, but that source diversity may offer water districts a perceived buffer from the need for immediate water use reductions. Drought severity and lower median incomes are associated with greater water conservation, and conservation varies by hydrologic region. This analysis offers insights into institutional design and suggests that local biophysical and economic conditions shape responses in systematic ways that should be addressed by public policy responses to drought.

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Mapping global patterns of drought risk: An empirical framework based on sub-national estimates of hazard, exposure and vulnerability

Cited by 352 publications

References 61 publications

Reconciling Drought Vulnerability Assessment Using a Convergent Approach: Application to Water Security in the Elqui River Basin, North-Central Chile

Reconciling Drought Vulnerability Assessment Using a Convergent Approach: Application to Water Security in the Elqui River Basin, North-Central Chile

Response of Grassland Degradation to Drought at Different Time-Scales in Qinghai Province: Spatio-Temporal Characteristics, Correlation, and Implications

Urban responses to restrictive conservation policy during drought

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