Dear Colleagues,

Water is the vital component of everyday life through which climate change affects human health, environment and the economy. In this regard, sustainable water resource planning and management should be the essential concentration of policy makers to cope with the changing climate. Therefore, to achieve the sustainable development goals, realization of the nonlinear impact of climate change on water demand and supply is necessary. The greenhouse effect on the hydrologic cycle has led to alterations in the spatiotemporal characteristics of precipitation and, subsequently, the hydrological balance in water resources has been disturbed. Examples of such dire disarrays are freshwater resource reductions, alterations in the timing and magnitude of runoff and soil moisture leading to severe floods and drought, change in snow accumulation and melt timings and patterns, seawater level changes, poor water quality, increased sediment delivery, decrease in groundwater replenishment, changes in summer atmospheric circulation patterns, etc. Such changes raise the possibility of environmental, social, and economical problems, and they have significant impact on future water resources planning and management. Moreover, the mentioned climate change impacts on the hydrologic cycle accompanied with anthropogenic effects, which endanger a resilient and sustainable water resource management plan.  Therefore, accurate identification of problems that have occurred, and the estimation of future challanges induced by climate change, can pave the way for proper mitigation and adoption to acheive sustainability goals. This Special Issue of Sustanability calls for innovative research papers to contribute to assessing the climate change impact over the hydrological processes at different scales, from catchment, to region, and to globe considering two strategies: 1) modeling research to recognize climate change quality and quantity on hydroclimatologic variables to incorporate the various aspects of climate change impacts, and 2) developing decision-making policies to prevail against the adverse consequences of climate change.

Ultimately, topics such as downscaling techniques, integration of downscaling with hydrological modeling, climate extremes and impacts on water resources, multicriteria analyses, water availability assessment, management of aquifer systems, and adaptation strategies for water resources in a changing climate are welcome in this Special Issue.

Prof. Dr. Vahid Nourani
Dr. Aida H. Baghanam
Guest Editors

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• climate change impact
• hydrological processes
• water resources management and planning
• decision making
• downscaling of climate models
• watershed models
• sustainability
• droughts
• floods
• ecosystems
• surface and groundwater vulnerability
• evapotranspiration
• socioeconomic effects