Impacts of climate change on water resources on eastern mountainous region of Turkey

Download

index.pdf

Date

2013

Author

Güventürk, Abdülkadir

Metadata

Show full item record

Item Usage Stats

286
views

134
downloads

Temperature and precipitation are the most important indicators of climate change. Especially for the basins fed by snow, the shifts of melting to earlier times, affects the streamflow. Increase in temperature causes to shifts of melting of snow to shift to earlier times so that hydrologic regime of the river system changes, and leads to changes in climatic conditions of the region. In this study the shifts of snow melting times are analyzed for the selected 15 streamflow stations located in Euphrates, Tigris, Aras, and Çoruh basins in Eastern Anatolia of Turkey along with period from 1970 to 2010. The shifts in snowmelt runoff are determined by Center Time (CT) method. Meteorological stations representing the stream gauge stations regarding the basin characteristics are also selected to be used in the analyses. In order to relate CT shifts to temperature and precipitation changes, trend analysis are applied to temperature, precipitation and streamflow data. In addition to these, days with daily average temperature less than freezing and wet days below freezing until CT for each station pair between stream gauge and meteorological stations and each year are also analyzed. These days till CT within a year for each station pair can be indirectly linked to snowy days and accumulated snow amount. Complete analyses show significant warming at each station in the region and no important trends in annual precipitation. However at a few stations meaningful seasonal changes in precipitation are observed. Regional warming and associated changes in precipitation and snowmelt runoff cause significant shifts to earlier times of snowmelt runoff. In the region eight out of fifteen stream gauge stations in Euphrates, Tigris and Aras basins showed significant time shifts according to statistical trend tests.

Subject Keywords

Climatic changes, Water table, Hydrologic cycle., Snow., Meltwater.

URI

http://etd.lib.metu.edu.tr/upload/12615706/index.pdf
https://hdl.handle.net/11511/22338

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Effects of precipitation recharge and artificial discharge on salt water-fresh water interface movement in selçuk sub-basin: climatic indications Aykanat, Gökben; Çamur, Mehmet Zeki; Department of Geological Engineering (2011) Fluctuations in temperature and precipitation amounts due to climate change influence recharge rate of groundwater. Any variations in the amount of precipitation recharge and artificial discharge directly affect groundwater level and so the salt water intrusion rate in the aquifers, which are in contact with sea water. The purpose of this study is to determine the overall historical precipitation recharge trend in Selçuk sub-basin and to detect whether there is a decrease or increase in recharge amounts due...
Ecological impacts of global warming and water abstraction on lakes and reservoirs due to changes in water level and related changes in salinity Jeppesen, Erik; Brucet, Sandra; Naselli-Flores, Luigi; Papastergiadou, Eva; Stefanidis, Kostas; Noges, Tiina; Noges, Peeter; Attayde, Jose Luiz; Zohary, Tamar; Coppens, Jan; Bucak, Tuba; Menezes, Rosemberg Fernandes; Sousa Freitas, Francisco Rafael; Kernan, Martin; Sondergaard, Martin; Beklioğlu, Meryem (2015-05-01) According to the Intergovernmental Panel on Climate Change report released in September 2014, unprecedented changes in temperature and precipitation patterns have been recorded globally in recent decades and further change is predicted to occur in the near future, mainly as the result of human activity. In particular, projections show that the Mediterranean climate zone will be markedly affected with significant implications for lake water levels and salinity. This may be exacerbated by increased demands fo...
Assessing the impact of climate change on Mogan and Eymir Lakes' levels in Central Turkey Yagbasan, Ozlem; Yazıcıgil, Hasan (2012-05-01) Global warming is likely to have significant effect on the hydrological cycle. Some parts of the world may see significant reductions in precipitation or major alterations in the timing of wet and dry seasons. Climate change is one of the serious pressures facing water resources and their management over the next few years and decades. As part of the southern belt of Mediterranean Europe, Turkey is highly vulnerable to anticipated climate change impacts. The changes in global climate will seriously affect i...
Impacts of climatic variables on water-level variations in two shallow Eastern Mediterranean lakes Yagbasan, Ozlem; Yazıcıgil, Hasan; Demir, Vahdettin (2017-08-01) Variations in temperature and precipitation have direct impacts on the physical, chemical and biological characteristics of the shallow lakes. This paper examines the possible linkages between climate variables and the water levels of shallow interconnected Lakes Mogan and Eymir, located 20 km south of Ankara in Central Anatolia. The variations in the lakes' water levels during 1996-2015 are studied and the impacts of climate variables on the lake levels are assessed to address the long-term consequences. T...
Impacts of climate change on snow accumulation and melting processes over mountainous regions in Northern California during the 21st century Ishida, K.; Ohara, N.; Ercan, Ali; Jang, S.; Trinh, T.; Kavvas, M. L.; Carr, K.; Anderson, M. L. (2019-10-01) A point-location-based analysis of future climate change impacts on snow accumulation and melting processes was conducted over three study watersheds in Northern California during a 90-year future period by means of snow regime projections. The snow regime projections were obtained by means of a physically-based snow model with dynamically downscaled future climate projections. Then, atmospheric and snow-related variables, and their interrelations during the 21st century were investigated to reveal future c...

Citation Formats

A. Güventürk, “Impacts of climate change on water resources on eastern mountainous region of Turkey,” M.S. - Master of Science, Middle East Technical University, 2013.