Investigation of Emissions and Ozone Photochemistry over China and Their Environmental Impacts

中国排放和臭氧光化学及其环境影响调查

• 批准号: 1158867
• 负责人: Yuhang Wang
• 金额: $ 30.85万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-04-15 至 2015-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1158867&HistoricalAwards=false
• 关键词: Investigation; Emissions; Ozone; Photochemistry; over

The rapid economic growth in China has led to large increases of pollutant emissions but current understanding of their subsequent chemical evolution, large-scale atmospheric transport, and environmental implications is limited. Recent observational evidence suggests that photochemistry over China has characteristics distinct from those considered by current generation of 3-D chemical transport models. These differences may reflect limitations in chemical schemes as implemented in current models or large underestimation of emissions for fast-reacting aromatics over China. Evidence also suggests an increasing influence of the trans-Pacific transport of emissions from China on O3 over the western United States. The research effort will improve scientific understanding of atmospheric photochemistry over China and the associated larger-scale implications via analysis of satellite and in situ observations and associated model calculations. The specific research objective is to investigate the effects of volatile organic compounds, particularly aromatics, on regional O3 photochemistry over China. The research problems that will be addressed through this effort are not only relevant to current understanding of atmospheric chemistry but will also provide the scientific basis for evaluating the environmental consequences of economic development and exploring effective emission control measures. One graduate student will be supported and trained in modeling and data analysis through the project. Results will be published in journal articles, presented to the public in lectures, and employed as case studies in graduate-level atmospheric chemistry courses. The collaboration of Chinese scientists in the research effort will facilitate the transfer of knowledge and technology and thereby help improve air quality in China and, indirectly, in the United States.

中国经济的快速增长导致污染物排放量大幅增加，但目前对其随后的化学演化、大规模大气传输和环境影响的了解有限。最近的观测证据表明，中国的光化学具有与当前一代 3-D 化学输运模型所考虑的特征不同的特征。这些差异可能反映了当前模型中实施的化学方案的局限性或对中国快速反应芳烃排放量的大幅低估。有证据还表明，中国排放物的跨太平洋运输对美国西部上空的臭氧的影响越来越大。这项研究工作将通过对卫星和现场观测以及相关模型计算的分析，提高对中国大气光化学及其相关更大规模影响的科学认识。具体研究目标是研究挥发性有机化合物，特别是芳香族化合物，对中国区域 O3 光化学的影响。通过这项工作将解决的研究问题不仅与当前对大气化学的认识有关，而且还将为评估经济发展的环境后果和探索有效的排放控制措施提供科学依据。通过该项目，一名研究生将获得建模和数据分析方面的支持和培训。结果将发表在期刊文章中，在讲座中向公众展示，并用作研究生水平大气化学课程的案例研究。中国科学家在研究工作中的合作将促进知识和技术的转让，从而有助于改善中国的空气质量，并间接改善美国的空气质量。