Intermediate‐Volatility Organic Compounds (IVOCs) Emissions Based on Source‐Specific Emission Ratios Relative to NonMethane Volatile Organic Compounds (NMVOCs) Give Better Representation of the Spatial Distribution of IVOCs in China
Abstract Intermediate‐volatility organic compounds (IVOCs) and their contribution to secondary organic aerosols (SOA) in China are simulated in GEOS‐Chem with seven newly constructed IVOCs emission inventories (IEIs). The IEIs based on different references and source‐specific emission ratios show a large range of emissions in China (4.8–14 Tg yr −1 ) and also significant differences in major sources and spatial distributions. Among them, the IEI relative to nonMethane volatile organic compounds (NMVOCs) with a total emission of 12 Tg yr −1 , dominated by solvent use, better captures observed spatial distributions of IVOCs and SOA. In contrast, IEIs relative to primary organic aerosols (POA) misinterpret the major sources and tend to have a negative bias in megacities even when the total emission is scaled up to 14 Tg yr −1 . The study indicates that previous studies have underestimated IVOCs emission and hence the contribution to SOA. It also demonstrates the importance of using an appropriate reference to better represent the major sources and the spatial distribution of IVOCs.
Authors
- Qi Xiong (ORCID: https://orcid.org/0000-0001-8690-565X)
- Nan Ma (ORCID: https://orcid.org/0000-0003-4494-3337)
- Qiaoqiao Wang (ORCID: https://orcid.org/0000-0001-9275-1765)
- Yele Sun (ORCID: https://orcid.org/0000-0003-2354-0221)
- Hang Su (ORCID: https://orcid.org/0000-0003-4889-1669)
- Cheng Huang (ORCID: https://orcid.org/0000-0001-9518-3628)
- Fan Li (ORCID: https://orcid.org/0000-0003-0155-9474)
- Ning Yang (ORCID: https://orcid.org/0000-0002-5442-5480)
- Yafang Cheng (ORCID: https://orcid.org/0000-0003-4912-9879)
- Hongli Wang (ORCID: https://orcid.org/0000-0003-0655-3389)
- Guangjin Liu (ORCID: https://orcid.org/0000-0001-7857-9444)
- Shaowen Zhu
- Zeman Fan
- Jiangchuan Tao (ORCID: https://orcid.org/0009-0007-7118-8070)
- Juan Hong (ORCID: https://orcid.org/0000-0003-1445-9130)
- Yaqing Zhou (ORCID: https://orcid.org/0009-0007-0252-0121)
Institutions
- Jinan University (CN)
- Chinese Academy of Sciences (CN)
- Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality (CN)
- Max Planck Institute for Chemistry (DE)
- Zhejiang Environmental Monitoring Center (CN)
- Shanghai Academy of Environmental Sciences (CN)
- Institute of Atmospheric Physics (CN)
Publication Details
- Journal
- Journal of Geophysical Research Atmospheres
- Published
- 2024-12-29
- DOI
- https://doi.org/10.1029/2024jd041464
- Primary Topic
- Atmospheric chemistry and aerosols
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Guangdong Province Introduction of Innovative R&D Team
- Basic and Applied Basic Research Foundation of Guangdong Province