Drought indices and indicators revisited

Yihdego, Yohannes; Vaheddoost, Babak; Al‐Weshah, Radwan A.

doi:10.1007/s12517-019-4237-z

Cited by 142 publications

(102 citation statements)

References 80 publications

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“…Existing review articles on the topic so far have primarily concentrated on (i) drought concepts and definitions(Mishra and Singh 2010), (ii) indicators, methods and tools for the assessment and monitoring of drought hazards (e.g Mishra and Singh 2011, Zargar et al 2011, Li and Zhou 2014, Hao and Singh 2015, Yihdego et al 2019,. or more recently (iii) vulnerability to drought (González Tánago et al 2016,…”

mentioning

confidence: 99%

Drought vulnerability and risk assessments: state of the art, persistent gaps, and research agenda

Hagenlocher

Meza

Anderson

et al. 2019

Environ. Res. Lett.

186

167

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Reducing the social, environmental, and economic impacts of droughts and identifying pathways towards drought resilient societies remains a global priority. A common understanding of the drivers of drought risk and ways in which drought impacts materialize is crucial for improved assessments and for the identification and (spatial) planning of targeted drought risk reduction and adaptation options. Over the past two decades, we have witnessed an increase in drought risk assessments across spatial and temporal scales drawing on a multitude of conceptual foundations and methodological approaches. Recognizing the diversity of approaches in science and practice as well as the associated opportunities and challenges, we present the outcomes of a systematic literature review of the state of the art of people-centered drought vulnerability and risk conceptualization and assessments, and identify persisting gaps. Our analysis shows that, of the reviewed assessments, (i) more than 60% do not explicitly specify the type of drought hazard that is addressed, (ii) 42% do not provide a clear definition of drought risk, (iii) 62% apply static, index-based approaches, (iv) 57% of the indicatorbased assessments do not specify their weighting methods, (v) only 11% conduct any form of validation, (vi) only ten percent develop future scenarios of drought risk, and (vii) only about 40% of the assessments establish a direct link to drought risk reduction or adaptation strategies, i.e. consider solutions. We discuss the challenges associated with these findings for both assessment and identification of drought risk reduction measures, and identify research needs to inform future research and policy agendas in order to advance the understanding of drought risk and support pathways towards more drought resilient societies.

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mentioning

confidence: 99%

Drought vulnerability and risk assessments: state of the art, persistent gaps, and research agenda

Hagenlocher

Meza

Anderson

et al. 2019

Environ. Res. Lett.

186

167

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“…In simple terms, while SPI is useful for characterization of meteorological drought at different timescales, the SSI is a useful complement to the SPI for depicting hydrological aspects of drought [58]. Our choice for SPI12 and SSI12 is that the 12-month time scale is most representative of hydrological conditions connected to streamflow and reservoir storage [59]. Secondly, we chose SPI12 and SSI12 as indices to allow us to characterize the climate and investigate the sustainability of the Taabo Dam based on climate indices.…”

Section: Resultsmentioning

confidence: 99%

Sustainable Hydroelectric Dam Management in the Context of Climate Change: Case of the Taabo Dam in Côte D’Ivoire, West Africa

et al. 2019

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Management of hydroelectric dams is an aspect of sustainability that comes with resolving problems locally. The use of global indicators has not been a sustainable solution, thus the need for local indicators. Besides, current sustainability assessment tools lack the integration of climate, making assessments in a climate change context impossible. In this paper, we present management and sustainability assessment in a climate change context using sustainability indicators. We modeled a change in the climate using normal, moderate, and extreme climate conditions defined by Standardized Precipitation Indices (SPI) values. Out of 36 years analyzed, 24 years fall in the near-normal climate regime, and the remaining 12 years in moderate and extreme conditions, making near-normal climate regime the basis for managing the Taabo Dam. The impact of climate, techno-economic, and socio-environmental indicators on sustainability were investigated, and the results were analyzed according to scenarios. Climate adaptation shows higher sustainability indices than techno-economic and socio-environmental scenarios. Probability matrices show high and low values, respectively, for environmental and flooding indicators. Risk matrices, on the other hand, show that even with small probability values, risks still exist, and such small probabilities should not be taken as an absence of risk. The study reveals that sustainability can be improved by integrating climate into existing assessment methods.

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“…Soil moisture index (SMI), standardized precipitation evapo-transpiration index (SPEI), standardized precipitation index (SPI), normalized difference vegetation index (NDVI), moisture adequacy index are applied to detect the drought condition by some scholars (Ji and Peters 2003;Vicente-Serrano et al 2010;Hao and AghaKouchak 2013;Rajpoot and Kumars 2019). Yihdego et al (2019) have critically analyzed various drought indices and their capability to predict drought. Whereas, Shah and Mishra (2020) have presented the integrated drought index (IDI) for drought monitoring and prediction in India.…”

Section: Introductionmentioning

confidence: 99%

Spatial assessment of drought vulnerability using fuzzy-analytical hierarchical process: a case study at the Indian state of Odisha

Saha

Kundu

Paul

et al. 2021

Geomatics, Natural Hazards and Risk

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Drought indices and indicators revisited

Cited by 142 publications

References 80 publications

Drought vulnerability and risk assessments: state of the art, persistent gaps, and research agenda

Drought vulnerability and risk assessments: state of the art, persistent gaps, and research agenda

Sustainable Hydroelectric Dam Management in the Context of Climate Change: Case of the Taabo Dam in Côte D’Ivoire, West Africa

Spatial assessment of drought vulnerability using fuzzy-analytical hierarchical process: a case study at the Indian state of Odisha

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