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CAREER: Understanding the Fate of Reactive Organic Carbon in the Atmosphere

职业：了解大气中活性有机碳的命运

基本信息

批准号：
2046367
负责人：
Gabriel Isaacman-VanWertz
金额：
$ 50.84万
依托单位：
Virginia Polytechnic Institute and State University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-04-01 至 2026-03-31
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2046367&HistoricalAwards=false
关键词：
CAREER Understanding Fate Reactive Organic

项目摘要

This CAREER project is focused on studying the removal of organic gases from the atmosphere by wet deposition. A series of laboratory and field measurements of the solubility and scavenging of organic gases will enable estimates of the timescales for removal. The results of this research could significantly improve model estimates of atmospheric composition and aerosol mass and could more broadly lead to a better understanding of the global carbon cycle relevant to the study of air quality and climate change.The overarching goal of this research is to estimate timescales for the deposition of oxygenated gases to assist with understanding the fate of reactive organic carbon and the removal of atmospheric reactivity. The major objectives are to: (1) quantify the parameters controlling the deposition of reactive organic carbon through novel laboratory and field measurements; (2) understand the fate of atmospheric components and the potential for deposition to impact atmospheric reactivity and aerosol formation; and (3) improve understanding of atmospheric composition and aerosol formation. A novel “rain chamber” will be built that uses controlled, variable precipitation to selectively scavenge gases as a function of solubility. Henry’s Law constants will be measured in this chamber for hundreds of short-lived oxygenated gases formed from a wide range of atmospherically relevant precursors. The scavenging chamber also will be deployed in the field at the Virginia Forest Lab to connect compound solubility to wet deposition for short-lived oxygenated gases, with a focus on data collected during the growing season when terpene emission is high. The results of this research will lead to a better understanding of the competition between oxidation and deposition for the removal of reactive carbon from the atmosphere.This project includes the development of on-line educational materials and hands-on activities through a collaboration with the Science Museum of Western Virginia and the Virginia Tech Center for Educational Networks and Impacts.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.

这个CAREER项目的重点是研究通过湿沉积从大气中去除有机气体。对有机气体的溶解度和清除能力的一系列实验室和现场测量将使人们能够估计去除的时间尺度。这项研究的结果可以显著改善对大气成分和气溶胶质量的模式估计，并可以在更广泛的范围内更好地了解与空气质量和气候变化研究相关的全球碳循环。本研究的首要目标是估计含氧气体沉积的时间尺度，以帮助了解活性有机碳的命运和去除大气反应性。主要目标是：(1)通过新的实验室和现场测量，量化控制活性有机碳沉积的参数；(2)了解大气组分的命运和沉积对大气反应性和气溶胶形成的潜在影响；(3)提高对大气成分和气溶胶形成的认识。一种新型的“雨室”将被建造，它使用可控的、可变的降水来选择性地清除气体，作为溶解度的函数。亨利定律常数将在这个室内测量数百种由各种大气相关前体形成的短寿命含氧气体。清除室也将部署在弗吉尼亚森林实验室的现场，将化合物溶解度与短寿命含氧气体的湿沉积联系起来，重点是在萜烯排放量高的生长季节收集数据。这项研究的结果将导致更好地理解氧化和沉积之间的竞争，以从大气中去除活性碳。该项目包括通过与西弗吉尼亚科学博物馆和弗吉尼亚技术教育网络和影响中心的合作开发在线教育材料和实践活动。该奖项反映了美国国家科学基金会的法定使命，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。

项目成果

期刊论文数量（3）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Portable, low-cost samplers for distributed sampling of atmospheric gases

用于大气气体分布式采样的便携式低成本采样器

DOI：
10.5194/amt-16-4681-2023
发表时间：
2023
期刊：
Atmospheric Measurement Techniques
影响因子：
3.8
作者：
Hurley, James F.;Caceres, Alejandra;McGlynn, Deborah F.;Tovillo, Mary E.;Pinar, Suzanne;Schürch, Roger;Onufrieva, Ksenia;Isaacman-VanWertz, Gabriel
通讯作者：
Isaacman-VanWertz, Gabriel

An autonomous remotely operated gas chromatograph for chemically resolved monitoring of atmospheric volatile organic compounds

用于大气挥发性有机化合物化学解析监测的自主远程操作气相色谱仪

DOI：
10.1039/d2ea00079b
发表时间：
2023
期刊：
Environmental Science: Atmospheres
影响因子：
0
作者：
McGlynn, Deborah F.;Panji, Namrata Shanmukh;Frazier, Graham;Bi, Chenyang;Isaacman-VanWertz, Gabriel
通讯作者：
Isaacman-VanWertz, Gabriel

Quantitative Characterization of the Volatility Distribution of Organic Aerosols in a Polluted Urban Area: Intercomparison Between Thermodenuder and Molecular Measurements