title: Spatial and temporal patterns of precipitation and stream flow variations in Tigris-Euphrates river basin.
abstract: 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.
authors.affiliation: School of Engineering, University of Guelph, Guelph, ON, N1G 2W1, Canada. pdaggupati@tamu.edu.
authors.forename: Prasad
authors.initials: P
authors.lastname: Daggupati
authors.affiliation: Spatial Science Laboratory, Ecosystem Science and Management Department, Texas A&M University, College Station, TX, 77801, USA.
authors.forename: Raghavan
authors.initials: R
authors.lastname: Srinivasan
authors.affiliation: Spatial Science Laboratory, Ecosystem Science and Management Department, Texas A&M University, College Station, TX, 77801, USA.
authors.forename: Mehdi
authors.initials: M
authors.lastname: Ahmadi
authors.affiliation: Shell Technology Centre, RMZ Centennial, Bangalore, 5600048, India.
authors.forename: Deepa
authors.initials: D
authors.lastname: Verma
mesh_terms: D002980:Climate; D004784:Environmental Monitoring; D064867:Mesopotamia; D008877:Middle East; D045483:Rivers; D012914:Snow; D014872:Water Movements; D014881:Water Supply; D053833:Wetlands
keywords: CFSR weather data; Snowfall runoff correlation; Spatio-temporal precipitation analysis; Spatio-temporal stream flow analysis; Tigris Euphrates basin