Drought and Water‐Supply Management: Roles and Responsibilities

Grigg, Neil S.; Vlachos, Evan

doi:10.1061/(asce)0733-9496(1993)119:5(531)

Cited by 21 publications

(17 citation statements)

References 1 publication

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“…In the last decades, particularly with the onset of the 21st century, it has become apparent that traditional crisis management approaches (reactive posture) have been replaced by risk assessment (proactive strategies), by addressing questions of anticipatory action, and multi-stakeholder involvement [1,10,12,13]. Rapid socio-economic changes, socio-political upheavals and the transitions necessitated by the turbulent decades of the 1980s, 1990s and 2010s underscore the increasing emphasis on the variety of environmental challenges; the search for sustainable development; the promotion of integrated planning and management; and, the attempt to combine structural and non-structural solutions to persistent drought problems.…”

Section: Drought and Spi Applicationmentioning

confidence: 99%

Application of the Standardized Precipitation Index (SPI) in Greece

Karavitis

Alexandris

Tsesmelis

et al. 2011

Water

159

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Abstract:The main premise of the current effort is that the use of a drought index, such as Standardized Precipitation Index (SPI), may lead to a more appropriate understanding of drought duration, magnitude and spatial extent in semi-arid areas like Greece. The importance of the Index may be marked in its simplicity and its ability to identify the beginning and end of a drought event. Thus, it may point towards drought contingency planning and through it to drought alert mechanisms. In this context, Greece, as it very often faces the hazardous impacts of droughts, presents an almost ideal case for the SPI application. The present approach examines the SPI drought index application for all of Greece and it is evaluated accordingly by historical precipitation data. Different time series of data from 46 precipitation stations, covering the period 1947-2004, and for time scales of 1, 3, 6, 12 and 24 months, were used. The computation of the index was achieved by the appropriate usage of a pertinent software tool. Then, spatial representation of the SPI values was carried out with geo-statistical methods using the SURFER 9 software package. The results underline the potential that the SPI usage exhibits in a drought alert and forecasting effort as part of a drought contingency planning posture.

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Section: Drought and Spi Applicationmentioning

confidence: 99%

Application of the Standardized Precipitation Index (SPI) in Greece

Karavitis

Alexandris

Tsesmelis

et al. 2011

Water

159

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“…Drought has various definitions that are mostly related to its effects on ecosystems and water management problems (Tate and Gustard, ). The main issue for water management is a difference in precipitation (Grigg and Vlachos, ). The difference between precipitation amount and the water requirement for crops causes a drought, which ultimately affects crop growth adversely.…”

Section: Introductionmentioning

confidence: 99%

Detecting the persistence of drying trends under changing climate conditions using four meteorological drought indices

Khan

Liu

et al. 2017

Meteorological Applications

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Numerous drought indices based on single or multiple variables have been developed for the assessment of drought. This study aimed to detect the variability of droughts by applying four drought indices, the standardized precipitation index, the reconnaissance drought index, the standardized precipitation evaporative drought index and the effective drought index, at five meteorological stations in the Songhua River basin (SRB) in China during 1962-2013 and at two meteorological stations in the Indus River basin (IRB) during 1980-2013 using different timescales (3, 6, 9 and 12 months). Moreover, a Mann−Kendall trend test at the 5% significance level was used for the assessment of drought trends in the basins. The results indicated that the 12 month data series for the SRB and the 6 month data series for the IRB were appropriate for assessing dry conditions and for comparing the drought indices. Pearson's correlation analyses between the drought indices results and the meteorological variables revealed that the standardized precipitation index is a better drought index for the assessment of drought in the SRB (r = 0.99). The results also showed that the standardized precipitation evaporative drought index versus the reconnaissance drought index is better at identifying drought in the IRB with a Pearson's correlation value r of 0.98. Severe and extremely dry conditions prevailed between 1990 and 2001 in the SRB, and there were extreme drought conditions with an intensity of −2.00 in the IRB during 2001-2002. Overall, this study provides insights into choosing the appropriate time interval and drought index for a specific region to identify the severity of droughts.

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“…The resulting values were spatially visualized in a GIS environment, according to the classification presented in Figure 2. The 1990The , 1993The , 2003The , 2007, and 2018, droughts were identified and spatially portrayed. From these droughts, the most intense drought periods were chosen to be included in the current effort, namely the 1990, 2007, and 2018 ones.…”

Section: Resultsmentioning

confidence: 99%

“…Nevertheless, the literature agrees that no single index alone can precisely describe the spatial extent, the duration, and the magnitude of the phenomenon. Given such characteristics, appropriate and effective drought early-warning systems should be based on multiple indices and/or a synthesis of indicators to sufficiently demarcate the drought events [5,6,8,[10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Multi-Index Drought Assessment in Europe

Oikonomou

Karavitis

Kolokytha

2018

Ecws-3

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Any attempt for the application of integrated drought management requires identifying and characterizing the event, per se. The questions of scale, boundary, and of geographic areal extent are of central concern for any efforts of drought assessment, impact identification, and thus, of drought mitigation implementation mechanisms. The use of drought indices, such as Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI), has often led to pragmatic realization of drought duration, magnitude, and spatial extension. The current effort presents the implementation of SPI and SPEI on a Pan-European scale and it is evaluated using existing precipitation and temperature data. The ENSEMBLES Observations gridded dataset (E-OBS) for precipitation, minimum temperature, and maximum temperature used covered the period 1969–2018. The two indices estimated for time steps of 6 and 12 months. The results for the application period of recurrent droughts indicate the potential that both indices offer for an improvement on drought critical areas of identification, threshold definitions and comparability, and towards contingency planning, leading to better mitigation efforts.

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Drought and Water‐Supply Management: Roles and Responsibilities

Cited by 21 publications

References 1 publication

Application of the Standardized Precipitation Index (SPI) in Greece

Application of the Standardized Precipitation Index (SPI) in Greece

Detecting the persistence of drying trends under changing climate conditions using four meteorological drought indices

Multi-Index Drought Assessment in Europe

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