Impact assessment of climate change on hydro-climatic conditions of arid and semi-arid watersheds (case study: Zoshk-Abardeh watershed, Iran) | Zendy

mohadese rahimpour | Zendy; Mohamad Tajbakhsh | Zendy; Hadi Memarian | Zendy; Amirhosein Aghakhani Afshar | Zendy

Open Access

Impact assessment of climate change on hydro-climatic conditions of arid and semi-arid watersheds (case study: Zoshk-Abardeh watershed, Iran)

Author(s) -

mohadese rahimpour,

Mohamad Tajbakhsh,

Hadi Memarian,

Amirhosein Aghakhani Afshar

Publication year - 2020

Publication title -

journal of water and climate change

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 22

eISSN - 2408-9354

pISSN - 2040-2244

DOI - 10.2166/wcc.2020.224

Subject(s) - representative concentration pathways , environmental science , surface runoff , watershed , climate change , arid , precipitation , soil and water assessment tool , hydrology (agriculture) , swat model , climatology , climate model , drainage basin , streamflow , meteorology , geography , geology , ecology , paleontology , oceanography , cartography , geotechnical engineering , machine learning , computer science , biology

The hydrologic cycle in the river basins of semi-arid regions is severely influenced by climate change. The aim of this study is to assess the impact of climate change on the hydro-climatic condition in Zoshk-Abardeh watershed in eastern Iran. The Soil and Water Assessment Tool (SWAT) was calibrated using the Sequential Uncertainty Fitting – Version 2 (SUFI-2) algorithm to improve the simulation results of the runoff. The Model for Interdisciplinary Research on Climate-Earth System Models (MIROC-ESM) was used to investigate the effects of climate change on hydro-climatic components under the representative concentration pathway scenarios (RCPs: 2.6, 4.5, 6.0, and 8.5) and in near(2014–2042), mid(2042–2071), and far(2072–2100) futures. The temperature component under the RCP4.5 and RCP6.0 during the nearand mid-future intervals and the far-future period (for RCP6.0) indicated a significant rising trend. The rainfall parameter in all RCPs and future intervals showed an insignificant descending trend. Runoff alterations under the RCP4.5 amid the midto far-future intervals and under the RCP8.5 throughout the far-future period trailed a significant descending trend. The results determined that the temperature will track an upward tendency, while precipitation and runoff will follow a descending trend in this watershed by the end of the 21st

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