Collaborative Research: P2C2--Reconstructing Southern Rocky Mountains Warm Season Temperature for the Past 2000 Years

合作研究：P2C2——重建落基山脉南部近2000年暖季温度

• 批准号: 2202400
• 负责人: Cody Routson
• 金额: $ 19.53万
• 依托单位: Northern Arizona University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2202400&HistoricalAwards=false
• 关键词: Collaborative; Research; P2C2; Reconstructing; Southern

The general goal of the research is to use bristlecone pine from the Rio Grande Headwaters region to develop a temperature reconstruction spanning 2,000 years, augmented with updated and new hydroclimate reconstructions, to evaluate long-term, regional temperature and hydroclimate relationships.Anomalously warm summer temperatures reduce runoff by increasing the rates of evapotranspiration and by decreasing soil moisture, which has a persistent effect into winter and the following summer. However, there is disagreement to the extent to which recent warming has influenced upper Rio Grande flows. This project will address changes in runoff efficiency (the proportion of precipitation that becomes runoff) over time using instrumental datasets, an updated Rio Grande streamflow reconstruction, and a local precipitation reconstruction to assess the role of temperature in modulating runoff efficiency during droughts and pluvials.The Rio Grande supplies surface water to over 2 million acres of agriculture and over 6 million people. Predominantly supporting agriculture and rural economies, the Rio Grande also serves urban centers including Albuquerque, El Paso, and Ciudad Juárez. Ongoing drought has led to severe water shortages, yet the Rio Grande has been understudied compared to the upper Colorado River basin, possibly due to the proportion of poorly-represented communities the river serves. This project moves toward placing paleoclimate information into practice by engaging with upper Rio Grande water stakeholders in order to understand their water supply and management concerns.The potential Broader Impacts include greater understanding of water resources in the southwestern United States, support for a post-doctoral researcher, and substantive interaction with water resource managers and stakeholders in the region.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.

该研究的总体目标是利用格兰德河源头地区的狐尾松进行跨越 2,000 年的温度重建，并通过更新和新的水文气候重建进行增强，以评估长期的区域温度和水文气候关系。夏季异常温暖的气温通过增加蒸散速率和降低土壤湿度来减少径流，这对冬季和随后的夏季有持续的影响，但是，对于最近的影响程度存在分歧。变暖影响了格兰德河上游的流量。该项目将利用仪器数据集、更新的格兰德河流量重建和当地降水重建来解决径流效率（降水转化为径流的比例）随时间的变化，以评估温度在河流中的作用。调节干旱和雨季径流效率。格兰德河为超过 200 万英亩的农业和超过 600 万人提供地表水，主要支持农业和农村经济，还为阿尔伯克基、埃尔等城市中心提供服务。帕索和华雷斯城持续的干旱导致了严重的水资源短缺，但与科罗拉多河流域上游相比，格兰德河的研究还不够充分，这可能是由于该河所服务的社区比例较低。该项目旨在研究古气候。通过与格兰德河上游水资源利益相关者合作，了解他们的供水和管理问题，将信息付诸实践。潜在的更广泛影响包括加深对美国西南部水资源的了解、对博士后研究员的支持，以及与该地区的水资源管理者和利益相关者进行实质性互动。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。