Adaptive hybrid architecture for enhancement of the complex hydroclimatic system and assessment of freshwater security

Abstract

Future freshwater security relies on hydroclimatic (HC) shifts and regimes for sustainable development. The approximation of the HC system faces major uncertainties and complexities due to the incorporation of heavy datasets, characteristics, and constraints. The proposed study focused on the parallel computing of emulator modeling-based spatial optimization to enhance the HC systems with the perspective of future freshwater security in the Upper Chattahoochee River basin (UCR). Here, the framework compiles both physical and machine learning concepts with adaptive technology for the replication of real-world scenarios. Besides, it contains 2Emulator Model Fitting, Spatial Optimization, Parallel Computing, and Initial and Adaptive sampling to upgrade model efficiency, while UCR has inadequate groundwater and the assessment of freshwater security in UCR is more necessary for varying future climatic conditions. The results displayed that the proposed spatial optimization algorithm proved to be an effective and efficient approach in the approximation of HC models. The assessment of water security in UCR was showed in terms of scarcity and vulnerability indicators for median and low-level conditions, respectively. Moreover, this study provides the potential framework for the enhancement of physical model predictions with the incorporation of hybrid concepts for problem-solving technology which can provide significant information on HC issues. HIGHLIGHTS A comprehensive framework for the integration of the physical and machine learning concepts to enhance the hydroclimatic system.; Adaptive emulator-based spatial optimization was introduced to control expensive simulations.; Parallel computing was incorporated in the framework to restrict the spatial variability in large-scale watersheds.; Assessed the future freshwater security based on the Blue/Green Water dynamics.;

Keywords

• adaptive machine learning
• hybrid simulators
• hydroclimatology
• parallel computing
• spatial optimization
• water security