Potential Impact of Global Warming on Climate and Streamflow of Adhaim River Basin, Iraq

Global warming induces to increase of greenhouse gases in the atmosphere and plays a crucial role determining future trend climatology hydrology watershed. This paper aims investigate implications global on climate its consequents streamflow Adhaim River Basin (ARB). For this purpose, Long Ashton Research Station-Weather Generator (LARS-WG) Soil Water Assessment Tool (SWAT)-Based models were implemented. The hydrologic records for period 1990-2019 used as Reference Period (RP) projected 2080 under Representative Concentration Pathways (RCPs 2.6, 4.5, 8.5) five Climate Models (GCMs). results show that region ARB tends become hotter drier with an mean temperature by 1.2, 2.9, 4.6 °C considered RCPs, respectively. However, precipitation decrease from 366 mm/y RP 320.2, 302, 300.5 RCPs. Consequently, will about 28, 26, 24 m3/s respectively, compared 28.96 RP. Therefore, adaptation strategies are highly recommended alleviate negative impacts change, change groundwater, water demand, plans should be investigated studies.