Analyses of drought in Eastern Mediterranean basin with era-interim data

Oğuz, Kahraman; PEKİN, Muhammet Ali; Gürkan, Hüdaverdi; Oğuz, Esin; Coşkun, Mustafa

doi:10.7161/omuanajas.321080

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…However, arid climates are more susceptible to drought due to lack of moisture and high variability of precipitation. Drought usually develops slowly, is often long-lasting, and is the least estimated of all atmospheric hazards, but its effects are very broad (Kapluhan, 2013;Oğuz et al, 2017). In the Gölova Dam Lake, the drought effect was felt more in 2014 and 2017.…”

Section: Yearsmentioning

confidence: 99%

A Look at the Change in Water Occupancy Rates of Gölova Dam Lake, Turkey

Dirican¹

2022

World Journal of Environmental Biosciences

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Climate change stands out as the biggest threat to agriculture and food production. The study aimed to examine the water occupancy rates of the Gölova Dam Lake from 2010 to 2019. The data regarding the water occupancy rate of the Gölova Dam Lake was obtained from the General Directorate of State Hydraulic Works of the Republic of Turkey. The results showed that the water occupancy rate was lowest (2.70%) in 2014, while the highest water occupancy rate (38.90%) was in 2016. The average water occupancy rate of Gölova Dam Lake for the period between 2010-2019 remained at 23.81±12.05. The evaluation revealed that the water occupancy rates of Gölova Dam Lake, decreased up to 75% on average between the period of 2010-2019. If this situation continues, the Gölova Dam Lake will become short and it will cause a decrease in the amount of water discharge that can accentuate due to climate change.

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Section: Yearsmentioning

confidence: 99%

A Look at the Change in Water Occupancy Rates of Gölova Dam Lake, Turkey

Dirican¹

2022

World Journal of Environmental Biosciences

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“…Studies on the effect of low precipitation on streamflow and its correlation with the eastern Mediterranean Basin are limited. The majority of studies are related to meteorological drought analysis using the standardized precipitation index (SPI) and only based on the precipitation data of basins in the Mediterranean region of Turkey (Bahadır, 2011;Keskiner et al, 2016;Topçu, and Seçkin, 2016;Oğuz et al, 2017;Çelik and Gülersoy, 2018;Çuhadar and Atış, 2019). An annual precipitation decreased by 157 mm (25%) and an annual runoff decreased by 118 mm (52%) were detected in a study on the potential future (2070s) impacts of climate change on the hydrology and water resources of the Seyhan River Basin (Fujihara et al,2008).…”

Section: Introductionmentioning

confidence: 99%

Response of hydrological drought to meteorological drought in the eastern Mediterranean Basin of Turkey

Altın

2021

J. Arid Land

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The hydrographic eastern Mediterranean Basin of Turkey is a drought sensitive area. The basin is an important agricultural area and it is necessary to determine the extent of extreme regional climatic changes as they occur in this basin. Pearson's correlation coefficient was used to show the correlation between standardized precipitation index (SPI) and standardized streamflow index (SSI) values on different time scales. Data from five meteorological stations and seven stream gauging stations in four sub-basins of the eastern Mediterranean Basin were analyzed over the period from 1967 to 2017. The correlation between SSI and SPI indicated that in response to meteorological drought, hydrological drought experiences a one-year delay then occurs in the following year. This is more evident at all stations from the mid-1990s. The main factor causing hydrological drought is prolonged low precipitation or the presence of a particularly dry year. Results showed that over a long period (12 months), hydrological drought is longer and more severe in the upper part than the lower part of the sub-basins. According to SPI-12 values, an uninterrupted drought period is observed from 2002-2003 to 2008-2009. Results indicated that among the drought events, moderate drought is the most common on all timescales in all sub-basins during the past 51 years. Long-term dry periods with moderate and severe droughts are observed for up to 10 years or more since the late 1990s, especially in the upper part of the sub-basins. As precipitation increases in late autumn and early winter, the stream flow also increases and thus the highest and most positive correlation values (0.26-0.54) are found in January. Correlation values (ranging between -0.11 and -0.01) are weaker and negative in summer and autumn due to low rainfall. This is more evident at all stations in September. The relation between hydrological and meteorological droughts is more evident, with the correlation values above 0.50 on longer timescales (12-and 24-months). The results presented in this study allow an understanding of the characteristics of drought events and are instructive for overcoming drought. This will facilitate the development of strategies for the appropriate management of water resources in the eastern Mediterranean Basin, which has a high agricultural potential.

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Evaluation of Temperature, Precipitation and Aerosol Variation in Eastern Mediterranean Basin

Oğuz¹,

Akın²

2019

Mühendislik Bilimleri Ve Tasarım Dergisi

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İklim değişikliği ekolojik, sosyal ve ekonomik sistemlere önemli derecede zarar vermektedir. İnsan aktiviteleri sonucu atmosfere salınan karbondioksit ve diğer ısı tutan (sera) gazların artışıyla beraber, dünya ortalama sıcaklığının artacağı, yağış paternlerinin etkileneceği, buz ve kar örtüsünün azalacağı, deniz seviyesinin yükseleceği, okyanusların asitliği artacağı, ekstrem olayların sıklığı, yoğunluğu ve süresinin artacağı, değişik ekosistem özelliklerinin görüleceği beklenmektedir. Artış ve değişiklik göstermesi beklenen tüm bu hadiselerin, insan sağlığına yönelik tehditleri artıracağı da kaçınılmazdır. Bu sebeple, iklimde gerçekleşen ve gerçekleşmesi muhtemel değişimlerin incelenmesi önem arz etmektedir. Türkiye'nin de içerisinde yer aldığı Doğu Akdeniz havzası, iklim değişikliğine en duyarlı bölgelerden biridir. Aynı zamanda Doğu Akdeniz havzası, Afrika ve Orta Doğu çöllerini içerdiği için bölgede sık gerçekleşen toz taşınımı sebebiyle aerosol miktarında artışlarla beraber hava kalitesinde düşüş yaşamaktadır. Bu çalışmada, öncelikli olarak Doğu Akdeniz Havzası geneli ve Türkiye için 1981-2010 dönemi sıcaklık ve yağış, 2003-2017 dönemi için ise aerosol değişimleri ve trendleri incelenmiştir. Gerçekleşen değişimlerin %95 güven aralığında olup olmadığını incelemek amacıyla verilere Mann-Kendall testi uygulanmıştır. Sonrasında ise, GFDL-ESM2M küresel iklim modelinin sıcaklık ve yağış gelecek öngörüleri tartışılmıştır.

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Analyses of drought in Eastern Mediterranean basin with era-interim data

Cited by 3 publications

References 6 publications

A Look at the Change in Water Occupancy Rates of Gölova Dam Lake, Turkey

A Look at the Change in Water Occupancy Rates of Gölova Dam Lake, Turkey

Response of hydrological drought to meteorological drought in the eastern Mediterranean Basin of Turkey

Evaluation of Temperature, Precipitation and Aerosol Variation in Eastern Mediterranean Basin

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