Hybrid modeling approach to assess the sustainability of hydrological systems

评估水文系统可持续性的混合建模方法

• 批准号: 261303-2008
• 负责人: Elshorbagy, Amin
• 金额: $ 1.68万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=505180
• 关键词: Hybrid; modeling; approach; assess; sustainability

The assessment of the sustainability of natural and human-made hydrological and environmental systems (e.g., restored watersheds, watershed infrastructure, urban drainage systems) relies mainly on mathematical modeling to allow for long-term simulation and presentation of the performance of the system in question. In this research, a hybrid modeling approach for hydrological systems will be developed. The hybrid approach is defined as a modeling system that includes or integrates multiple (at least two) models. These models can be physically based where sufficient knowledge of the physical processes should be available or data-driven models that can be employed when the knowledge of the physical processes is absent or incomplete. The proposed hybrid modeling approach and the resulting hybrid models will be evaluated in terms of their modeling accuracy, accommodation of various sources of uncertainty, and computational efficiency, which includes computational time and tractability as well as their impact on the final system management decisions. The proposed research will be validated and applied to a multiple case studies, such as, modeling the various hydrological process (eg., soil moisture content, actual evapotranspiration, runoff) in restored watersheds in northen Alberta and natural forested sites from the BOREAS project in Saskatchewan.

对自然的和人为的水文和环境系统（例如，恢复的流域、流域基础设施、城市排水系统）的可持续性的评估主要依靠数学模型，以便长期模拟和介绍有关系统的性能。在本研究中，将开发水文系统的混合建模方法。混合方法被定义为包含或集成多个（至少两个）模型的建模系统。这些模型可以是基于物理的，其中应该有足够的物理过程知识，或者当物理过程知识缺失或不完整时可以使用数据驱动的模型。所提出的混合建模方法和由此产生的混合模型将根据其建模精度、各种不确定性来源的适应性和计算效率（包括计算时间和可追溯性以及它们对最终系统管理决策的影响）进行评估。拟议的研究将得到验证并应用于多个案例研究，例如，模拟各种水文过程(例如：在阿尔伯塔省北部恢复的流域和萨斯喀彻温省BOREAS项目的自然森林地点，土壤水分含量，实际蒸散量，径流)。