High-resolution river routing at large scales to analyze hydrographic patterns, risks and trends of Canadian and global freshwater resources

我的研究计划旨在加强大规模水文建模方案，以分析全球和加拿大淡水资源的当前地理格局和未来趋势。我的首要研究问题是：为什么和在哪里是淡水资源的风险，由于全球环境变化，以及我们如何能够减轻预期的影响？我的科学方法包括三个部分。首先，我开发新的和改进的全球水文数据集（即流域，河流，湖泊，水库，水坝，湿地，瀑布，城市用水等的地图和数据库）。以前所未有的质量和分辨率。为了实现这一目标，我利用并融合了地理信息科学和遥感的最先进的方法，以获得科学严谨和可靠的数据。其次，我增强，修改和适应现有的大规模水文模型的概念，以创建一个新的建模框架。这些发展的一个基石是从基于栅格的方法（目前在大多数全球水文模型中实施）迁移到基于矢量的河流路由计划。第三，我应用改进的数据和建模框架来评估各种前沿的水文，生态或淡水资源问题。我目前的工作和中期计划包括：河流栖息地分类;综合流域管理和大型水库运行的战略规划;农业土地利用实践，城市用水和气候变化对下游水质和水量的影响评估;以及保护水文学和环境流量评估的新方法。在新奇和重要性方面，无缝数据和新的建模技术相结合，将允许首次研究在泛加拿大和全球范围内的空间和时间分辨率，以前是无法实现的。我的研究计划也将有助于消除一些最常见的数据限制大规模水文建模;例如，我的几个数据产品已经成功地集成在各种全球和加拿大的气候，土地利用和水资源模型。

My research program aims to enhance large-scale hydrological modeling schemes in order to analyze current geographic patterns and future trends of global and Canadian freshwater resources. My overarching research questions are: Why and where are freshwater resources at risk due to global environmental change, and how can we mitigate the anticipated effects? My scientific approach consists of three parts. First, I develop new and improved datasets of global hydrography (i.e. maps and databases of watersheds, rivers, lakes, reservoirs, dams, wetlands, waterfalls, urban water use, etc.) at unprecedented quality and resolution. To achieve this, I utilize and blend state-of-the-art methodologies from Geographic Information Science and Remote Sensing to derive scientifically rigorous and reliable data. Second, I enhance, modify, and adapt existing large-scale hydrological model concepts to create a new modeling framework. A cornerstone of these developments is the migration from a raster-based approach (as currently implemented in most global hydrological models) to a vector-based river routing scheme. And third, I apply the improved data and modeling framework to assess various cutting-edge hydrological, ecological or freshwater resources questions. My current efforts and mid-term plans include: river habitat classifications; strategic planning for integrated river basin management and large-scale reservoir operation; assessments of the effects of agricultural land use practices, urban water use, and climate change on downstream water quality and quantity; as well as new approaches in conservation hydrology and environmental flow assessments. In terms of novelty and significance, the combination of seamless data and new modeling techniques will allow for first-time studies at pan-Canadian and global extents at spatial and temporal resolutions that have previously been unachievable. My research program will also help to eliminate some of the most common data restrictions for large-scale hydrological modeling; e.g. several of my data products have already been integrated successfully in a variety of global and Canadian climate, land use and water resources models.