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.

该职业奖是支持研究，以解决有关N2O（一氧化二氮）排放到气氛的关键问题。 观测和建模都将用于帮助提高对农业土壤和周围水道如何助长N2O水平上升的问题的理解。该项目包括为K-12学生（尤其是在科学中代表不足的学生）带来对科学研究的兴趣的活动和合作。激励和指导拟议的调查的两个问题是：1。为什么最先进的模型和库存无法准确地再现区域规模N2O排放？2。北美当前和未来的N2O排放的区域尺度控制是什么？作为该项目的一部分，塔和飞机测量的土壤和水道的测量，包括玉米带中的自然和受精土地，沿着密西西比河下游河流将与区域性lagrangian运输模型相结合，以确定N2O的现代排放量。地统计建模将用于在温度，降水，淹没状态以及土壤水分和区域排放等变量之间建立统计关系。

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