CAREER: EAR-Climate: Impacts of Recent Wetting on Cold Region Hydrologic Change in the Northern Great Plains

职业：EAR-气候：近期湿润对北部大平原寒冷地区水文变化的影响

基本信息

批准号：
2146078
负责人：
Taufique Mahmood
金额：
$ 44.24万
依托单位：
University of North Dakota Main Campus
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2022
资助国家：
美国
起止时间：
2022-07-01 至 2027-06-30
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2146078&HistoricalAwards=false
关键词：
CAREER EAR Climate Impacts Recent

项目摘要

Recent increases in precipitation in the Northern Great Plains (NGP) have led to heavy streamflow and devastating flood events over the last three decades. However, it is not clear how the recent wetting has influenced hydrologic fluxes such as streamflow generation. In particular, the relationship between surface water storage and hydrologic processes during a complete dry-to-wet (drought-deluge) or wet-to-dry (deluge-drought) climatic cycle are not well understood. This study will fill this knowledge gap by simulating and analyzing hydrologic processes in this climate-sensitive region using a field-tested, physically-based cold region hydrologic model. This study will include a series of field-based cold region hydrology workshops and engage high school and tribal college students in summer research. These activities will aid in the development of baseline data, inspire Native American students in snow and water resources research, and raise awareness regarding the impact of changing climate on water security and quality.The objective of this study is to inform processes, behaviors, thresholds, functions, hysteresis patterns and feedbacks during the recent dry and wet climatic states through use of a field-tested physically-based model in five headwater basins draining to Devils Lake during 1990-2020 time period. Understanding the system's present and past behavior will advance understanding of the future cold region hydroclimatic response. Moreover, studying the hysteresis behavior of the cold region system is critical to predicting future change in a region expected to experience an altered wet and dry cycles throughout the 21st century. This project is jointly funded by Hydrologic Sciences and the Established Program to Stimulate Competitive Research (EPSCoR).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.

在过去的三十年中，北部大平原（NGP）的降水量最近增加导致了大量的水流和毁灭性的洪水事件。但是，尚不清楚最近的润湿如何影响水文通量，例如流量产生。尤其是，在完全干燥的（干旱拆除）或潮湿的（洪水干旱）气候周期中，地表水存储与水文过程之间的关系尚不清楚。这项研究将使用基于现场测试的，基于物理的冷区水文模型在该气候敏感区域中模拟和分析该气候敏感区域的水文过程来填补这一知识差距。这项研究将包括一系列基于现场的冷区水文学研讨会，并让高中和部落大学生参与夏季研究。 These activities will aid in the development of baseline data, inspire Native American students in snow and water resources research, and raise awareness regarding the impact of changing climate on water security and quality.The objective of this study is to inform processes, behaviors, thresholds, functions, hysteresis patterns and feedbacks during the recent dry and wet climatic states through use of a field-tested physically-based model in five headwater basins draining to Devils Lake during 1990-2020 time 时期。了解系统的当前和过去行为将提高人们对未来寒冷区域氢化气候反应的理解。此外，研究冷区域系统的磁滞行为对于预测预期在整个21世纪会发生变化的潮湿和干燥周期的地区的未来变化至关重要。该项目由水文科学和启发竞争性研究的既定计划共同资助（EPSCOR）。该奖项反映了NSF的法定任务，并使用基金会的智力优点和更广泛的影响评估审查标准，认为值得通过评估来获得支持。