Spatial and temporal patterns of precipitation and stream flow variations in Tigris-Euphrates river basin

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• 作者：Prasad Daggupati ; Raghavan Srinivasan…
• 关键词：Tigris Euphrates basin ; CFSR weather data ; Spatio ; temporal precipitation analysis ; Spatio ; temporal stream flow analysis ; Snowfall runoff correlation
• 刊名：Environmental Monitoring and Assessment
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：189
• 期：2
• 全文大小：
• 刊物类别：Earth and Environmental Science
• 刊物主题：Monitoring/Environmental Analysis; Environmental Management; Ecotoxicology; Atmospheric Protection/Air Quality Control/Air Pollution; Ecology;
• 出版者：Springer International Publishing
• ISSN：1573-2959
• 卷排序：189

文摘

Tigris and Euphrates river basin (TERB) is one of the largest river basins in the Middle East, and the precipitation (in the form of snowfall) is a major source of streamflow. This study investigates the spatial and temporal variability of precipitation and streamflow in TERB to better understand the hydroclimatic variables and how they varied over time. The precipitation shows a decreasing trend with 1980s being wetter and 2000s being drier. A total of 55 and 40% reduction in high flows in Tigris and Euphrates rivers at T20 and E3 was seen in post-reservoir period. A lag time of 3 to 4 and 5 to 6 months was estimated between peak snowfall and runoff time periods. Decreasing precipitation and streamflow along with several planned dams could hamper the sustainability of several Mesopotamian marshlands that completely depend on the water from the Tigris and Euphrates rivers.