Collaborative Research: Anthropogenic water management, Climate Change, and Environmental Sustainability in the Southwestern US (ACCESS)

合作研究：美国西南部的人为水管理、气候变化和环境可持续性（ACCESS）

• 批准号: 2103119
• 负责人: Ben Livneh
• 金额: $ 13.5万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2103119&HistoricalAwards=false
• 关键词: Collaborative; Research; Anthropogenic; water; management

There have been growing concerns about water security in the southwestern US because of dwindling supplies and rising demands. The hydrology of the region is changing in ways that could critically undermine water supplies, agricultural production, power generation, and river-dependent ecosystems. Of particular concern is the declining flows in the Colorado River, a lifeblood for over 40 million people in seven southwestern states. Frequent and prolonged droughts have brought reservoir water levels in the Colorado River to record lows, raising concerns about a water crisis if current trends continue. This project examines whether future water demands in the southwestern US can be met under projected climate and current water management practices while maintaining environmental flow requirements, and if not, whether there are alternative approaches to achieving sustainability. The project directly engages regional stakeholders for participation in co-producing key aspects of the research and ensuring deliverables that are of the greatest value for improved water resource management. It also provides exposure to K-12 and undergraduate students regarding one of the nation’s most pressing water resource sustainability issues. The project uses high-resolution, long-term hydrologic simulations from a state-of-the-art hydrological modeling system to systematically examine the complex interplay between decreased water supplies under climate change, future demands, and the role of water management (e.g., reservoir operation, groundwater use, and out of basin water transfer) in mitigating climate impacts. The specific project objectives are to (1) quantify the future changes in water supplies and demands and examine their spatio-temporal trends and variabilities, (2) examine the changes in surface reservoir and groundwater storages, and quantify risks of storage depletion associated with intensified future droughts, and (3) co-develop potential sustainability pathways with regional stakeholders by considering tradeoffs between competing inter-sectoral water use and environmental flow requirements, and evaluate these pathways under a range of climate change and socio-economic growth scenarios. By considering various climate change and water use scenarios, combined with stakeholder-informed management options, the project holistically examines various possible pathways for water resource sustainability in the southwestern US. The integrated modeling framework developed in this project will provide major advances in the ability to simulate coupled natural-human systems in highly water-scarce regions. Project outcomes will be used in informing water resource management and educating K-12 and college students on growing water scarcity issues under climate change.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

由于供应量减少和需求的增加，我们对西南部的水安全越来越担心。该地区的水文学正在以严重破坏供水，农业生产，发电和依赖河流依赖的生态系统的方式发生变化。特别关注的是科罗拉多河的流量下降，这是七个西南州的4000万人命中率。频繁和长时间的干旱使科罗拉多河的研究者水位记录了低点，如果目前的趋势继续下去，就会引起人们对水危机的担忧。该项目考试是否可以在预计的气候和当前水管理实践下在维持环境流量需求的同时满足美国西南部的未来水需求，如果没有，是否有其他方法可以实现可持续性。该项目直接吸引了区域利益相关者参与研究的关键方面，并确保可交付成果对改善水资源管理具有最大价值。它还提供有关美国最紧迫的水资源可持续性问题之一的K-12和本科生的接触。该项目使用从最先进的液压建模系统那里使用高分辨率的长期水文模拟，以系统地检查在气候变化下的水供应下降，未来需求以及水管理的作用（例如，储层运营，地下水使用，地下水使用以及盆地水转移的盆地流量）之间的复杂相互作用）。特定的项目目标是（1）量化水供应和需求的未来变化，并检查其时空趋势和变异性，（2）检查地面储层和地下水储藏的变化，以及量化与潜在的竞争者相关的持续性销售量相关的储存风险，以及（3）与范围内的贸易群体相关的流程，以及（3）（3）（3）（3）（3）（3）（3）3）要求，并在一系列气候变化和社会经济增长情景下评估这些途径。通过考虑各种气候变化和用水场景，再加上利益相关者知名的管理选项，该项目可以整体研究美国西南部水资源可持续性的各种可能的途径。该项目中开发的集成建模框架将在模拟高度水域区域模拟耦合的天然人类系统的能力方面取得重大进步。项目成果将用于向水资源管理和教育K-12和大学生在气候变化下的水短缺问题上进行教育。该奖项反映了NSF的法定任务，并通过使用基金会的知识分子优点和更广泛的影响审查标准来评估NSF的法定任务。