| Title: | Spatial and Temporal Distributions and Sources of Anthropogenic NMVOCs in the Atmosphere of China: A Review |
| Author(s): | Wang F; Du W; Lv S; Ding Z; Wang G; |
| Address: | "Key Lab of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai, 200241 China. GRID: grid.22069.3f. ISNI: 0000 0004 0369 6365 Institute of Eco-Chongming, Shanghai, 200062 China" |
| DOI: | 10.1007/s00376-021-0317-6 |
| ISSN/ISBN: | 0256-1530 (Print) 1861-9533 (Electronic) 0256-1530 (Linking) |
| Abstract: | "As the key precursors of O(3), anthropogenic non-methane volatile organic compounds (NMVOCs) have been studied intensively. This paper performed a meta-analysis on the spatial and temporal variations of NMVOCs, their roles in photochemical reactions, and their sources in China, based on published research. The results showed that both non-methane hydrocarbons (NMHCs) and oxygenated VOCs (OVOCs) in China have higher mixing ratios in the eastern developed cities compared to those in the central and western areas. Alkanes are the most abundant NMHCs species in all reported sites while formaldehyde is the most abundant among the OVOCs. OVOCs have the highest mixing ratios in summer and the lowest in winter, which is opposite to NMHCs. Among all NMVOCs, the top eight species account for 50%-70% of the total ozone formation potential (OFP) with different compositions and contributions in different areas. In devolved regions, OFP-NMHCs are the highest in winter while OFP-OVOCs are the highest in summer. Based on positive matrix factorization (PMF) analysis, vehicle exhaust, industrial emissions, and solvent usage in China are the main sources for NMHCs. However, the emission trend analysis showed that solvent usage and industrial emissions will exceed vehicle exhaust and become the two major sources of NMVOCs in near future. Based on the meta-analysis conducted in this work, we believe that the spatio-temporal variations and oxidation mechanisms of atmospheric OVOCs, as well as generating a higher spatial resolution of emission inventories of NMVOCs represent an area for future studies on NMVOCs in China" |
| Keywords: | NMVOCs photochemical activity source analysis spatial-temporal distribution; |
| Notes: | "PubMed-not-MEDLINEWang, Fanglin Du, Wei Lv, Shaojun Ding, Zhijian Wang, Gehui eng Review China 2021/05/06 Adv Atmos Sci. 2021; 38(7):1085-1100. doi: 10.1007/s00376-021-0317-6. Epub 2021 Apr 30" |
