Collaborative Research: Improving our Understanding of Chinese Haze Events by Quantifying the Formation Mechanisms of Sulfate and Nitrate Aerosol in Beijing

GSTDTAP

项目编号	1645062
	Collaborative Research: Improving our Understanding of Chinese Haze Events by Quantifying the Formation Mechanisms of Sulfate and Nitrate Aerosol in Beijing
	Yuxuan Wang
主持机构	University of Houston
项目开始年	2017
	2017-04-01
项目结束日期	2020-03-31
资助机构	US-NSF
项目类别	Continuing grant
项目经费	16523(USD)
国家	美国
语种	英语
英文摘要	Extreme urban haze is common in China and this pollution is transported over long range to the Pacific and the United States where it can damage human health and ecosystems. Therefore understanding the chemistry that produces this Chinese haze is important to us. Preliminary data and analysis show that current models grossly under-predict the fine particle pollution in this haze in China. This demonstrates that the chemistry in current models is incorrect and that we do not have confidence in their predictions that are used for assessments worldwide. The proposed work will measure the chemical and isotopic composition of the extreme haze in Beijing and analyze it with models to rectify this problem. The results should improve the forecasting of extreme air-pollution in China and also the exposure to the American population since this is transported over the Pacific to the United States. The researchers will collect samples of fine particle pollution in the urban haze in Beijing. The samples will be brought to US where their mass, chemical composition (sulfate and nitrogen), and the oxygen isotopic composition of the fine particle pollution will be measured. The oxygen isotope data will then be used to fingerprint the chemical mechanisms that are amplifying the particle pollution in the haze. A US developed high-resolution chemistry, transport and isotope enable model centered over Beijing that will be adjusted to match the isotope observation. This revised model should be better constrained and more realistically capture the large particle-production measured in the Chinese haze and also its long-range transport to the United States.
来源学科分类	Geosciences - Atmospheric and Geospace Sciences
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/70910
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Yuxuan Wang.Collaborative Research: Improving our Understanding of Chinese Haze Events by Quantifying the Formation Mechanisms of Sulfate and Nitrate Aerosol in Beijing.2017.