EAPSI:EAPSI: Investigation of the Reactions of Human Originated Pollutants with Gas-Phase Pine Forest Emissions in Seoul, Korea and Consequences for Atmospheric Particle Formation

EAPSI：EAPSI：韩国首尔松林气相排放的人源污染物反应及大气颗粒形成后果的调查

• 批准号: 1613473
• 负责人: Michael Link
• 金额: $ 0.54万
• 依托单位: Link Michael
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-06-15 至 2017-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1613473&HistoricalAwards=false
• 关键词: EAPSI; Investigation; Reactions; Human; Originated

Reactions of human originated pollutants with gas-phase emissions from plants have been found to enhance the production of climate-relevant atmospheric particles in environments with urban/rural interfaces in the United States. This mechanism of atmospheric particle formation is also expected to be important to the Korean peninsula which experiences local sources of pollution, but also frequent influences of pollution transported across the Yellow Sea from China. The extent of particle formation from human originated gas-phase sulfur will be assessed for an urban/rural interface in Seoul, South Korea through comparisons of results from laboratory studies of plant emission reactions and ambient measurements from Taehwa Research Forest. The Taehwa Research Forest emits an abundance of gas-phase compounds and frequently experiences local and long-range transported sources of pollution. Collaboration with Dr. Taehyoung Lee, a noted expert in measurement of atmospheric particles, at Hankuk University of Foreign Studies will provide access to a unique suite of instrumentation to perform experiments and ambient measurements which will help place the role human originated pollutants have, with respect to particle formation, into a global context. This research is expected to improve the fundamental understanding of how atmospheric particles form which is necessary to understand and predict climate-relevant processes. Additionally, understanding what processes control the formation of atmospheric particles in Seoul is necessary to mitigate air quality to standards established by the Special Act on Metropolitan Air Quality Improvement which currently sets air quality standards for the city of Seoul.Reactions of anthropogenic emissions (NOx, SO2) with biogenic volatile organic compounds have been found to enhance the production of secondary organic aerosol (SOA) through the formation of organosulfate compounds in environments with urban/rural interfaces in the United States. The extent of organosulfate formation from anthropogenic sulfur will be assessed for an urban/rural interface in Seoul, South Korea through comparisons of results from laboratory studies of monoterpene oxidation with ambient measurements from Taehwa Research Forest. The Taehwa Research Forest is a site with dominant monoterpene emissions that frequently experiences local sources of pollution, but also episodic pollution transported across the Yellow Sea from eastern China. Laboratory experiments of monoterpene oxidation in the presence of SO2 will be performed to measure and speciate organosulfates as well as quantify their enhancement of SOA. Speciated organosulfates observed in the lab will be compared to organosulfates measured at Taehwa Research Forest to determine the ambient relevance of organosulfate SOA enhancement. Collaboration with Dr. Taehyoung Lee, a noted expert in measurement of atmospheric particles, at Hankuk University of Foreign Studies will provide access to a unique suite of instrumentation to perform experiments and ambient measurements. The results of this study will describe the contribution of organosulfates to organic aerosol in an area dominated by monoterpene emissions and perturbed by anthropogenic emissions and are relevant for other areas with similar urban-rural interfaces. The results of this study are expected to help inform air quality legislation such as the ?Special Act on Metropolitan Air Quality Improvement? by accessing the extent to which biogenic emissions contribute to SOA formation in the metropolitan area of Seoul.This award under the East Asia and Pacific Summer Institutes program supports summer research by a U.S. graduate student and is jointly funded by NSF and the National Research Foundation of Korea.

在美国，人类产生的污染物与来自植物的气相排放物的反应被发现会增加城市/农村界面环境中与气候相关的大气颗粒物的产生。这种大气颗粒物形成机制对朝鲜半岛也很重要，因为朝鲜半岛有当地的污染源，但也经常受到来自中国的黄海污染的影响。将通过比较植物排放反应的实验室研究结果和泰华森林研究所的环境测量结果，对韩国首尔城乡界面的源自人类的气相硫的颗粒形成程度进行评估。泰华研究森林排放丰富的气相化合物，并经常经历本地和远程传输的污染源。与韩国外国语大学大气颗粒物测量方面的著名专家Taehydrium Lee博士合作，将提供一套独特的仪器来进行实验和环境测量，这将有助于将人类来源的污染物在颗粒物形成方面的作用置于全球范围内。这项研究有望提高对大气颗粒物如何形成的基本理解，这对于理解和预测气候相关过程是必要的。此外，了解控制首尔大气颗粒物形成的过程，对于将空气质量降低到《首都圈空气质量改善特别法》规定的标准是必要的，该法案目前为首尔市设定了空气质量标准。（NOx，SO2）与生物源挥发性有机化合物的混合物会增加二次有机气溶胶（SOA）的产生。通过在美国城市/农村界面的环境中形成有机硫酸盐化合物。将通过比较泰华森林研究所单萜氧化实验室研究结果与环境测量结果，对韩国首尔城乡界面的人为硫形成有机硫酸盐的程度进行评估。泰华研究森林是一个主要的单萜排放的网站，经常经历当地的污染源，但也从中国东部穿越黄海输送的偶发性污染。实验室实验的单萜氧化在SO2的存在下，将进行测量和物种有机硫酸盐，以及量化他们的SOA的增强。将在实验室中观察到的物种有机硫酸盐与在泰华研究森林测量的有机硫酸盐进行比较，以确定有机硫酸盐SOA增强的环境相关性。与韩国外国语大学大气颗粒物测量方面的著名专家Taehydrik Lee博士的合作将提供一套独特的仪器来进行实验和环境测量。本研究的结果将描述的贡献，有机硫酸盐的有机气溶胶在一个地区为主的单萜排放和人为排放的干扰，并与其他地区类似的城乡界面。这项研究的结果，预计将有助于通知空气质量立法，如？改善都市空气质量特别法？通过评估生物源排放对首尔大都市地区SOA形成的贡献程度。东亚和太平洋夏季研究所计划下的这一奖项支持美国研究生的夏季研究，由NSF和韩国国家研究基金会共同资助。