气候变化领域集成服务门户(CCPortal): Mapping anthropogenic emissions in China at 1 km spatial resolution and its application in air quality modeling

CCPortal

DOI	10.1016/j.scib.2020.12.008
	Mapping anthropogenic emissions in China at 1 km spatial resolution and its application in air quality modeling
	Zheng B.; Cheng J.; Geng G.; Wang X.; Li M.; Shi Q.; Qi J.; Lei Y.; Zhang Q.; He K.
发表日期	2021
ISSN	20959273
起始页码	612
结束页码	620
卷号	66 期号:6
英文摘要	New challenges are emerging in fine-scale air quality modeling in China due to a lack of high-resolution emission maps. Currently, only a few emission sources have accurate geographic locations (point sources), while a large part of sources, including industrial plants, are estimated as provincial totals (area sources) and spatially disaggregated onto grid cells based on proxies; this approach is reasonable to some extent but is highly questionable at fine spatial resolutions. Here, we compile a new comprehensive point source database that includes nearly 100,000 industrial facilities in China. We couple it with the frame of Multi-resolution Emission Inventory for China (MEIC), estimate point source emissions, combine point and area sources, and finally map China's anthropogenic emissions of 2013 at the spatial resolution of 30″×30″ (~1 km). Consequently, the percentages of point source emissions in the total emissions increase from less than 30% in the MEIC up to a maximum of 84% for SO2 in 2013. The new point source-based emission maps show the uncoupled distribution of emissions and populations in space at fine spatial scales, however, such a pattern cannot be reproduced by any spatial proxy used in the conventional emissions mapping. This new accurate high-resolution emission mapping approach reduces the modeled biases of air pollutant concentrations in the densely populated areas compared to the raw MEIC inventory, thus improving the assessment of population exposure. © 2020 Science China Press
关键词	Air quality modeling Anthropogenic emission inventory High-resolution mapping
英文关键词	Air quality; Image resolution; Mapping; Particulate emissions; Sulfur dioxide; Air pollutant concentrations; Air quality modeling; Anthropogenic emissions; Distribution of emissions; Emission inventories; High-resolution emission; Industrial facilities; Point source emissions; Industrial emissions
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207689
作者单位	Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China; Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, 100084, China; State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China; China National Environmental Monitoring Center, Beijing, 100012, China; Center for Environmental Risk and Damage Assessment, Chinese Academy of Environmental Planning, Beijing, 100012, China; Center for Regional Air Quality Simulation and Control, Chinese Academy of Environmental Planning, Beijing, 100012, China
推荐引用方式 GB/T 7714	Zheng B.,Cheng J.,Geng G.,et al. Mapping anthropogenic emissions in China at 1 km spatial resolution and its application in air quality modeling[J],2021,66(6).
APA	Zheng B..,Cheng J..,Geng G..,Wang X..,Li M..,...&He K..(2021).Mapping anthropogenic emissions in China at 1 km spatial resolution and its application in air quality modeling.Science Bulletin,66(6).
MLA	Zheng B.,et al."Mapping anthropogenic emissions in China at 1 km spatial resolution and its application in air quality modeling".Science Bulletin 66.6(2021).