The next generation of hydrology-biogeochemistry modelling in Canada: A flexible approach to multi-physics, multi-chemistry, and multi-scale modelling

加拿大和世界需要对水期货进行预测，以确保水安全。目前，科学知识、监测和建模技术不足，无法准确预测与水和水质相关的事件，以帮助管理加拿大的气候变化和水安全风险。我们的目标是通过扩展NextGen水文模型开发工作来帮助应对这些挑战。我们有四个目标。OBJECTIVE 1：解决科学和建模方面的差距：发展和扩展现有的关于生物地球化学过程的研究，并在具有代表性的湿地、溪流、湖泊和源头流域建立模型，以提高对过程的理解，并支持目标2中建议的NextGen模型的开发。OBJECTIVE 2：开发和优化NextGen代码：开发和优化新的多化学OpenWQ框架，并将其集成到基于SUMMA过程的水文模型中，以提供适用于加拿大的灵活/可定制的水文/水质模拟工具。预测和验证：最初的SUMMA-OpenWQ水文生物地球化学模型将在贝克克里克、阿萨巴斯卡河流域和大奴湖流域的小型研究流域进行测试和应用。目标4-解释、推荐和传播：该模型将与合作伙伴一起用于解释和评估气候变化、不同土地利用和水质管理方案的影响。

Canada and the world need to predict water futures to ensure water security. Presently, there is inadequate scientific knowledge, monitoring, and modelling technologies to accurately predict water and water quality-related events to help manage Canada's climate change and water security risks. Our goal is to help address these challenges by expanding nextGen hydrological model development efforts to include models of the terrestrial component of biogeochemical cycles.We have four objectives.OBJECTIVE 1: ADDRESS SCIENCE AND MODELLING GAPS: Develop and expand existing research on biogeochemical processes and modeling at representative wetlands, streams, lakes and headwater catchments to improve process understanding and support the development of the nextGen model proposed in Objective 2.OBJECTIVE 2: DEVELOP AND OPTIMIZE THE NEXTGEN CODE: Develop and optimize the new the multi-chemistry OpenWQ framework and integrate it in the SUMMA process-based hydrology model to provide a flexible/customizable hydrological/water quality simulation tool suitable for use in Canada.OBJECTIVE 3: APPLY, PREDICT, AND VALIDATE: The initial SUMMA-OpenWQ hydro-biogeochemical model will be tested and applied for the small research basin of Baker Creek, the Athabasca River basin, and the Great Slave Lake basin.OBJECTIVE 4 - INTERPRET, RECOMMEND and DISSEMINATE: In conjunction with partners, the model will be used to interpret and evaluate the impact of climate change, different land uses, and water quality management options.