CAREER: Improving Our Understanding of Nitrous Oxide Emissions to the Atmosphere

职业：提高我们对一氧化二氮向大气排放的了解

• 批准号: 1650682
• 负责人: Eric Kort
• 金额: $ 65.18万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-03-15 至 2023-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1650682&HistoricalAwards=false
• 关键词: CAREER; Improving; Our; Understanding; Nitrous

This CAREER award is supporting research to resolve key questions about the emissions of N2O (nitrous oxide) to the atmosphere. Both observations and modeling will be used to help improve the understanding of how agricultural soils and surrounding waterways contribute to the global problem of rising N2O levels. The project includes activities and collaborations that bring interest in scientific research to K-12 students, particularly those who are under-represented in the sciences.The two questions that are motivating and guiding the proposed investigation are:1. Why are state-of-the-art models and inventories unable to accurately reproduce regional scale N2O emissions?2. What are regional-scale controls on current and future N2O emissions in North America?As part of this project, tower and aircraft measurements over soils and waterways encompassing natural and fertilized lands in the Corn Belt and along the lower Mississippi River basin will be combined with a regional Lagrangian transport model to determine contemporary emissions of N2O. Geostatistical modeling will be used to establish the statistical relationship between variables such as temperature, precipitation, inundation state, and soil moisture and regional emissions.

这个职业奖是支持研究，以解决有关N2 O（一氧化二氮）排放到大气中的关键问题。 观测和建模都将用于帮助更好地了解农业土壤和周围水道如何导致全球N2 O水平上升的问题。该项目包括活动和合作，使K-12学生对科学研究产生兴趣，特别是那些在科学领域代表性不足的学生。激励和指导拟议调查的两个问题是：1.为什么最先进的模型和清单无法准确再现区域尺度的N2 O排放？2.在北美，对当前和未来的N2 O排放有哪些区域范围的控制措施？作为该项目的一部分，塔和飞机测量土壤和水道，包括自然和肥沃的土地在玉米带和沿着较低的密西西比河流域将结合区域拉格朗日运输模型，以确定当代排放的N2 O。地质统计建模将用于建立温度、降水、洪水状态、土壤湿度和区域排放量等变量之间的统计关系。

项目成果

Fossil Versus Nonfossil CO Sources in the US: New Airborne Constraints From ACT‐America and GEM

美国化石与非化石二氧化碳来源：ACT–America 和 GEM 的新空气传播限制

• DOI: 10.1029/2021gl093361
• 发表时间: 2021
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: Gonzalez, Andres;Millet, Dylan B.;Yu, Xueying;Wells, Kelley C.;Griffis, Timothy J.;Baier, Bianca C.;Campbell, Patrick C.;Choi, Yonghoon;DiGangi, Joshua P.;Gvakharia, Alexander
• 通讯作者: Gvakharia, Alexander