Evaluating the Characteristics of Multiyear Extreme Droughts in Semi-Arid Regions

Tarawneh, Zeyad; Hyari, Khaled Hesham; Katkhuda, Hasan

doi:10.1007/s40710-017-0246-7

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…Researchers have claimed that both drought hazards and risks will intensify as a result of the projected climate change (e.g., [33,34]). However, drought quantification constitutes a rather difficult task as it is based on various meteorological variables (e.g., precipitation and temperature; [35][36][37]). To assess drought, these meteorological variables are used as an input to estimate drought indices, which constitute "numerical representations of drought severity" [38].…”

Section: Introductionmentioning

confidence: 99%

Drought Assessment in Greece Using SPI and ERA5 Climate Reanalysis Data

Kourtis,

Vangelis,

Tigkas

et al. 2023

Sustainability

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The present work aims to assess the spatial variability and the trends of the annual rainfall and meteorological drought in the entire territory of Greece utilising the ERA5 reanalysis precipitation dataset of the European Centre for Medium-Range Weather Forecasts (ECMWF), which spans from January 1940 to December 2022 (an 83-year period). Drought assessment took place based on the Standardized Precipitation Index (SPI) for timescales ranging from 1 month to 12 months. Evaluation was carried out by calculating SPI using observed rainfall data from five meteorological stations. The annual rainfall and drought severity trends for timescales of 1 (SPI-1), 3 (SPI-3), 6 (SPI-6) and 12 (SPI-12) months were analysed using the Theil–Sen slope method and the Mann–Kendall trend test. The results indicate significant, both increasing and decreasing, annual precipitation trends at the 95% significance level for the Aegean Islands, western Crete and western mainland of Greece. The results also indicate significant drought trends for SPI-12 for the Aegean Islands and western Peloponnese. Trend analysis for SPI-1, SPI-3 and SPI-6 indicate a mixture of non-significantly increasing wetting trends and increasing drought trends at the national scale. In conclusion, the ERA5 dataset seems to be a valuable tool for drought monitoring at the spatial scale.

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Section: Introductionmentioning

confidence: 99%

Drought Assessment in Greece Using SPI and ERA5 Climate Reanalysis Data

Kourtis,

Vangelis,

Tigkas

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

“…Abdulla and Malkawi (2020) evaluated drought by calculating SPI at four different temporal resolutions ranging from 1 month to 12 months for present and future climate conditions. Tarawneh et al (2008) studied drought severity in arid regions of central Jordan by using precipitation data only. Hammouri and El-Naqa (2007) assessed drought for a basin in Jordan using SPI and the Normalized Difference Vegetation Index by employing precipitation and satellite data.…”

Section: Introductionmentioning

confidence: 99%

Drought Assessment of a Data-scarced Watershed – Quetta Valley, Pakistan

Abdullah¹,

Ahmed²,

Husain³

et al. 2023

JJCE

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Pakistan continuously remains under the threat of drought, as approximately 88% of its area falls under arid and semi-arid regions. The most affected province due to drought is Balochistan, facing migration, scarcity, famine and economic strain. The insufficiency of meteorolgical and hydrological data in the area intensifies the problem because of the late or non-diagnosis of drought. Therefore, this study proposes a methodology to quantify the drought in a watershed with inadequate meteorological and hydrological data. This study aims to design a method to find the extent and duration of drought conditions for watersheds where only basic meteorological data is available. For this purpose, Quetta Valley, Balochistan, Pakistan, is chosen as the study area. First, the hydrological components of water balance for the watershed are calibrated for 10 years using a distributed hydrological model (MIKE-SHE). The modeling results and other observed meteorological data are then used to evaluate eight drought indices to assess the existence and extent of drought, including those which use the hydrological parameters as input from MIKE-SHE. Reconnaissance drought and Palmer drought severity indices, which use detailed hydrological parameters, are found to provide more accurate results coupled with early drought detection of historical events. The results showed that the proposed method could be effectively used to determine the secondary parameters from the hydrological model, which in turn gives more realistic drought conditions for such regions. KEYWORDS: Meteorological drought indices, Hydrological modeling, MIKE SHE, Drought, Palmer drought severity index.

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An integer linear programming model to optimize the hub and spoke-based water desalinated transmission system

Gahtani

Mrad

2020

Journal of Water Supply: Research and Technology-Aqua

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Desalinated water is becoming a significant resource in many countries. With limited water supply, several high-demand sites located far from the desalination plant and an efficient and cost-effective transmission and storage network have become critical. In many areas, desalinated water is not delivered efficiently through a pipeline and storage tank system capable of providing safe and cost-effective coverage to a wide range of demand sites. In addition, due to the limitation of transmission and storage distribution, many desalination plants are unable to achieve full production capacity. Many high-demand sites are at risk of disruption or water contamination due to single-source pipelines or desalination plants. In this study, the conceptual framework for an economically viable transmission and storage system helps decision-makers to define the requirements for the proper design of the system. The definition is introduced here to describe strategic tanks for efficient and economical supply allocation. The key aspects of setting up effective transmission and storage systems were outlined in the framework presented. To develop an efficient and cost-effective transmission and storage system, an integer linear program was constructed to solve the hub and spoke issue. A hypothetical example is presented and discussed to illustrate the advantages of the proposed model.

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Evaluating the Characteristics of Multiyear Extreme Droughts in Semi-Arid Regions

Cited by 3 publications

References 31 publications

Drought Assessment in Greece Using SPI and ERA5 Climate Reanalysis Data

Drought Assessment in Greece Using SPI and ERA5 Climate Reanalysis Data

Drought Assessment of a Data-scarced Watershed – Quetta Valley, Pakistan

An integer linear programming model to optimize the hub and spoke-based water desalinated transmission system

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