Determination of drought intensity in Seyhan and Ceyhan River Basins, Turkey, by hydrological drought analysis

Altın, Türkan Bayer; Sarış, Faize; Altın, Bekir Necati

doi:10.1007/s00704-019-02957-y

Cited by 34 publications

(19 citation statements)

References 32 publications

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“…This is the case for all areas as per their respective weather stations. Altın, Sarış and ltın ( 2019 ) and SAWS ( 2018 ) reported similar drought patterns indicating that some parts of the country experience below-normal rainfall at varying frequencies with some areas being drier than others during the same period. These results concur with a number of previous studies in the Eastern Cape and South Africa in general (Altin et al 2019 ).…”

Section: Resultsmentioning

confidence: 94%

“…Altın, Sarış and ltın ( 2019 ) and SAWS ( 2018 ) reported similar drought patterns indicating that some parts of the country experience below-normal rainfall at varying frequencies with some areas being drier than others during the same period. These results concur with a number of previous studies in the Eastern Cape and South Africa in general (Altin et al 2019 ). Mhlontlo Local Municipality is one of the driest inland municipalities in ORTDM and experienced multiple droughts negatively impacting agriculture and water sources between 1998 and 2018 (Dotse 2019).…”

Section: Resultsmentioning

confidence: 94%

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Analysis of trends, recurrences, severity and frequency of droughts using standardised precipitation index: Case of OR Tambo District Municipality, Eastern Cape, South Africa

Khamisa

Ndhleve

Nakin

et al. 2022

Jàmbá

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South Africa is susceptible to droughts. However, little documentation exists on drought occurrence in South Africa at national, provincial and municipal administrative boundaries. This study profiles hydrological drought in OR Tambo District Municipality from 1998 to 2018, computing frequency, severity and intensity in order to show areas of high vulnerability. Data used were obtained from South African Weather Services. Standardised precipitation index (SPI) was calculated using the Meteorological Drought Monitor (MDM) software. Results showed a wide variation in monthly precipitation throughout the year. Coastal areas receive higher rainfall than inland municipalities. The study revealed that Nyandeni experienced the highest drought frequency of 62%, Mhlontlo (58%), King Sabatha Dalindyebo Municipality (57%), Ngquza Hill (55%) and Port St Johns Municipality showing the least at 52%. Hydrological drought severity frequency and duration varied between seven days and nine weeks. Drought intensity class exposed the annual average intensity for the five local municipalities represented as follows: KSDM (–0.71), PSJM (–0.99), Ngquza Hill (–0.81), Nyandeni (–0.71) and Mhlontlo (–0.62). The longest drought duration across OR Tambo was experienced in 2014 with durations varying from 3 to 11 weeks across the municipalities. OR Tambo District Municipality is susceptible to hydrological droughts and the extent varies across local municipalities. Results could be used for both adaptation planning and mitigating the impacts of future droughts. In addition, they could assist in guiding allocation of drought relief resources in ways that prioritise drought prone and vulnerable municipality.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 94%

Analysis of trends, recurrences, severity and frequency of droughts using standardised precipitation index: Case of OR Tambo District Municipality, Eastern Cape, South Africa

Khamisa

Ndhleve

Nakin

et al. 2022

Jàmbá

View full text Add to dashboard Cite

show abstract

“…This is the case for all areas as per their respective weather stations. Altın (2019) and SAWS (2018) reported similar drought patterns indicating that some parts of the country experience below-normal rainfall at varying frequency with some areas being drier than others during the same period. These results concur with a number of previous studies in the Eastern Cape and South Africa in general (Altin 2019).…”

Section: Resultsmentioning

confidence: 98%

Analysis of Trends, Recurrences, Severity and Frequency of Droughts using SPI: Case of OR Tambo DM, Eastern Cape in South Africa

Nkamisa

Ndhleve

Nakin

et al. 2021

Preprint

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South Africa is susceptible to droughts. However, there is little documentation on drought occurrence in South Africa at national level and its various administrative boundaries. The study aimed to profile the hydrological drought in ORTDM from 1998–2018; computing their frequency, severity and intensity so as to show areas of high vulnerability. Data used on this study was obtained from South African Weather Services in Pretoria. Standardized Precipitation Index (SPI) was calculated using the Meteorological Drought Monitor (MDM) software computing drought frequency, severity and intensity using 3 and 6 months SPI. The results showed a wide variation in monthly precipitation throughout the year. Coastal areas receive high rainfall than inland municipalities. When recorded in descending order, the drought intensity Nyandeni shows the highest drought frequency with a percentage of 62%, Mhlontlo (58%), KSDM (57%), Ngquza Hill (55%) and Port St Johns showing the least at (52%). The hydrological drought severity frequency and duration varied between 7 days to 9 weeks. Drought intensity class exposed the annual average intensity for the 5 local municipalities represented as follows; KSDM (-0.71), PSJM (-0.99), Ngquza Hill (-0.81), Nyandeni (-0.71) and Mhlontlo (-0.62). Maximum drought intensity for the 5 local municipalities showed the following results KSDM (-2.4), PSJM (-1.8), Ngquza Hill M (-1.9), Nyandeni M (-2.8) and Mhlontlo M (-3.1). The longest drought duration across OR Tambo was experienced in 2014 and has the following durations: KSDM (3 weeks), PSJM (5 weeks), Ngquza Hill (7 weeks), Nyandeni (8 weeks) and Mhlontlo (11 weeks). ORTDM is susceptible to hydrological droughts and the extent vary across local municipalities. The results could be used as a guide to the allocation of resources for drought relief purpose in a way that seeks to prioritize drought prone areas and vulnerable municipality. The SPI could be a useful when forecasting and estimating the frequency, duration and intensity of droughts. However, emphasis should be placed on improving the quality of data as this is key in improving the quality of its outcome.

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“…Turkey has already achieved its 2023 clean energy targets and has ambitious plans for further investments in renewable energy (Erat et al, 2021). Past studies have observed long‐term persistent drought conditions in Eastern Turkey with a negative trend starting in the 1990s (Altin et al, 2020), and drying of the Upper Tigris basin since 1990 (Ozkaya & Zerberg, 2019). Lelieveld et al (2012) identified a projected increase in the maximum daily temperature and a decrease in the annual precipitation in GCM projections.…”

Section: A Global Survey Of the Impact Of Climate Change On The Hydro...mentioning

confidence: 99%

Climate change and the hydropower sector: A global review

Wasti

Ray

et al. 2022

WIREs Climate Change

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Renewable sources of electricity, such as solar and wind, need to be paired with sources of reliable baseload. Hydropower is a renewable, low‐emission source of electricity baseload available throughout much of the world as an alternative to electricity conventionally provided by thermal combustion of fossil fuels; however, the global hydropower sector as it stands relies upon surface water flows of substantial and predictable volume. This makes it vulnerable to climate change. The impact of climate change on the hydropower sector is difficult to predict, and not globally uniform. It might be positive, negative, or inconsequential depending upon the local timing and magnitude of changes, reservoir size, allocation priority, and the energy market. The secondary effects of climate change on glacier lake outbursts floods, landslides, and sediment load are poorly understood. In addition, when planning hydropower projects for the future, attention must be given to the greenhouse gas contribution of the impounded waters behind storage dams, and the impact of dams on water temperature. In the past decade, sovereign nations and international development agencies worldwide have evaluated the potential of hydropower as a cost‐effective, clean, sustainable option for baseload electricity supply. There is therefore a crucial need to assess the opportunities and risks hydropower poses across a wide range of potential future climate conditions. This review paper conducts a global survey of the literature on the effect of climate change on hydropower and identifies room for improvement in current approaches to evaluation of the net benefits of hydropower projects under climate change. This article is categorized under: Vulnerability and Adaptation to Climate Change > Learning from Cases and Analogies Assessing Impacts of Climate Change > Evaluating Future Impacts of Climate Change

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Determination of drought intensity in Seyhan and Ceyhan River Basins, Turkey, by hydrological drought analysis

Cited by 34 publications

References 32 publications

Analysis of trends, recurrences, severity and frequency of droughts using standardised precipitation index: Case of OR Tambo District Municipality, Eastern Cape, South Africa

Analysis of trends, recurrences, severity and frequency of droughts using standardised precipitation index: Case of OR Tambo District Municipality, Eastern Cape, South Africa

Analysis of Trends, Recurrences, Severity and Frequency of Droughts using SPI: Case of OR Tambo DM, Eastern Cape in South Africa

Climate change and the hydropower sector: A global review

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