Quantifying the Influence of SnowmelT on RIVEr Hydrology in High Mountain Asia (STRIVE)

量化 SnowmelT 对亚洲高山河流水文的影响 (STRIVE)

• 批准号: 505340068
• 负责人: Dr. Taylor Smith
• 金额: --
• 依托单位: Institut für Geowissenschaften
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/505340068?language=en
• 关键词: Quantifying; Influence; SnowmelT; RIVEr; Hydrology

The proposed “Quantifying the Influence of SnowmelT on RIVEr Hydrology in High Mountain Asia (STRIVE)” project will better constrain how alpine rivers respond to the timing and volume of snowmelt. In many alpine catchments, a significant portion of the yearly water budget comes from snowmelt, particularly during dry summer seasons. As glaciers in many high-elevation regions continue to melt, the seasonal water buffer provided by snowmelt will only become more important. The risk of flooding will also increase as rising temperatures speed up the spring snowmelt season.Despite the importance of snow-water resources to many densely populated areas, the timing and volume of snowmelt remains poorly understood – especially in remote and difficult terrain. To better quantify when and where snowmelt reaches alpine rivers, the STRIVE project will use a combined in-situ and satellite-based approach in eastern Nepal to (1) monitor the timing and spatial distribution of snowmelt; (2) assess the influence of snowmelt on river heights; and (3) river temperatures. The novel high-density data collected during the STRIVE project will be co-located with existing hydro-meteorological stations to validate and extend existing approaches, with a particular focus on calibrating satellite-based products with high-temporal resolution in-situ data. The local-scale river-monitoring and calibration data collected during STRIVE will further be combined with regional hydrologic data to (4) develop a more complete understanding of the current state of snowmelt-driven alpine rivers and their projected response to changing climate conditions at the scale of the entire High Mountain Asia region. The results of the STRIVE project will be broadly useful to researchers, natural hazard planners, water managers, and hydropower development throughout the Himalaya and in similar snowmelt-driven alpine ecosystems.To facilitate research collaboration and exchange, the STRIVE project will also lead two workshops for local early-career scientists and water managers based around in-situ and remote sensing data collection and processing. These workshops will aid in disseminating the results of the STRIVE project and ensuring that the methods and data developed continue to inform research and water-policy decisions in the Himalaya after the end of the project.

拟议的“量化融雪对亚洲高山河流水文的影响”项目将更好地限制高山河流对融雪时间和数量的反应。在许多高山集水区，每年水预算的很大一部分来自融雪，特别是在干燥的夏季。随着许多高海拔地区的冰川继续融化，融雪提供的季节性水缓冲只会变得更加重要。随着气温上升，春季融雪期加快，洪水的风险也将增加。尽管雪水资源对许多人口密集地区很重要，但人们对融雪的时间和数量仍然知之甚少--特别是在偏远和困难的地形中。为了更好地量化融雪到达高山河流的时间和地点，该项目将在尼泊尔东部使用现场和卫星相结合的方法，以（1）监测融雪的时间和空间分布;（2）评估融雪对河高的影响;（3）河流温度。将在现有水文气象站的同一地点使用在水文气象站项目期间收集的新的高密度数据，以验证和扩展现有方法，特别侧重于用高时间分辨率的现场数据校准卫星产品。在亚洲高山生态系统研究期间收集的当地规模的河流监测和校准数据将进一步与区域水文数据相结合，以（4）更全面地了解融雪驱动的高山河流的现状及其对整个亚洲高山地区气候条件变化的预测反应。该项目的成果将广泛用于研究人员、自然灾害规划人员、水资源管理人员和整个喜马拉雅地区以及类似的融雪驱动的高山生态系统的水电开发，为促进研究合作和交流，该项目还将为当地的早期职业科学家和水资源管理人员举办两个讲习班，内容围绕现场和遥感数据收集和处理。这些讲习班将有助于传播该项目的成果，并确保在该项目结束后，所制定的方法和数据继续为喜马拉雅地区的研究和水政策决策提供信息。