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

加拿大和世界需要预测水的未来，以确保水安全。目前，没有足够的科学知识、监测和建模技术来准确预测水和水质相关事件，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大下一代水文模型开发工作，将生物地球化学循环的陆地成分模型包括在内，来帮助解决这些挑战。我们有四个目标。目标1：解决科学和建模差距：在代表性湿地、溪流、湖泊和水源集水区发展和扩大现有的生物地球化学过程和建模研究，以提高对过程的理解，并支持目标2中提出的下一代模型的发展。目标2：开发和优化NEXTGEN CODE：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，以提供适合加拿大使用的灵活/可定制的水文/水质模拟工具。目的3：应用、预测和验证：初始SUMMA-OpenWQ水文生物地球化学模型将在Baker Creek、Athabasca河流域和Great Slave湖流域的小研究盆地进行测试和应用。目标4 -解释、推荐和传播：与合作伙伴一起，该模型将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.