AGS-FIRP Track 3: Salt Lake City Summer Ozone Study (SLC-SOS)

AGS-FIRP 第 3 轨道：盐湖城夏季臭氧研究 (SLC-SOS)

• 批准号: 2315083
• 负责人: Emily Fischer
• 金额: $ 170.96万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-08-01 至 2026-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2315083&HistoricalAwards=false
• 关键词: AGS; FIRP; Track; Salt; Lake

This field campaign is focused on gaining a better understanding of the mechanisms for atmospheric ozone formation throughout the Wasatch Front near Salt Lake City Utah. During the summer of 2024, aircraft-based measurements of ozone and the precursors leading to its formation will be made in the atmosphere around Salt Lake City. This research is focused on improving the photochemical modeling that predicts the formation of high ozone concentrations. The results are expected to contribute to the development of mitigation strategies that can help reduce ozone pollution around Utah’s Wasatch Front.This project will: (1) assess how increased albedo from exposed salt flats may be enhancing photochemistry in polluted air masses that can then be transported back into the Salt Lake Valley by the lake breeze; (2) identify hypothesized large primary sources of formaldehyde and other oxygenated volatile organic compounds that influence ozone production; (3) investigate whether anthropogenic emission inventories, such as the EPA’s National Emission Inventory, miss a significant amount of reactive carbon or nitrogen oxide fluxes; and (4) diagnose how the addition of wildfire smoke changes the sensitivity of ozone production in the urban environment.This project supports a postdoctoral scholar and several graduate and undergraduate students. There will also be public events during the field campaign to describe ozone pollution and its formation and discuss the specific challenges associated reducing it 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.

该实地活动的重点是更好地了解犹他湖城附近瓦萨奇前线的大气臭氧形成机制。2024年夏季，将在湖城周围的大气中进行基于飞机的臭氧及其形成前体的测量。 这项研究的重点是改进预测高臭氧浓度形成的光化学建模。该研究结果将有助于制定缓解策略，以帮助减少犹他州瓦萨奇前线周围的臭氧污染。该项目将：（1）评估暴露的盐滩增加的二氧化硫如何增强污染空气团的光化学作用，然后污染空气团可以被湖风带回盐湖山谷;（2）确定影响臭氧产生的甲醛和其他氧化挥发性有机化合物的假设的主要来源;（3）调查人为排放清单，如EPA的国家排放清单，是否遗漏了大量的活性碳或氮氧化物通量;以及（4）诊断野火烟雾的增加如何改变城市环境中臭氧产生的敏感性。本项目资助了一名博士后学者和几名研究生和本科生。在实地活动期间，还将举办公共活动，介绍臭氧污染及其形成，并讨论在该地区减少臭氧污染的具体挑战。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。