Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031815 |
Observation Constrained Aromatic Emissions in Shanghai, China | |
Wang, Hongli1; Yan, Rusha1,4; Xu, Tingting1,2; Wang, Yuhang3; Wang, Qian1; Zhang, Tianqi1,5; An, Jingyu1; Huang, Cheng1; Gao, Yaqin1; Gao, Yang5; Li, Xiang2; Yu, Chao6; Jing, Shengao1; Qiao, Liping1; Lou, Shengrong1; Tao, Shikang1; Li, Yingjie1 | |
2020-03-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Aromatics in the atmosphere are a large contributor to ozone and secondary organic aerosol formation and have an adverse impact on human health. Observation-based emissions are urgently needed for air quality management and decision making due to the large uncertainties in the emissions inventories. Atmospheric aromatics were continuously observed at one urban site in Shanghai of China in 2015, which were compared with the simulations of the Community Multiscale Air Quality (CMAQ) model. Large differences were found in the temporal variations between the model and measurements, corroborating with previous studies that the current bottom-up emission inventories are highly biased. We corrected the aromatic emissions biases of the emission inventories using the observations with the CMAQ simulations, with the assumption that the response relationship of the emissions input and aromatic concentrations was reasonable on a monthly basis in CMAQ simulations, suggesting that the results are dependent on the model performance. The resulting aromatic emissions exhibited clear monthly variations, increasing from 5.5 2.1 Gg month(-1) in February to 17.4 7.7 Gg month(-1) in July, being different from the flat monthly pattern in the current bottom-up emissions inventory. Toluene, xylenes, and ethylbenzene dominated aromatic emissions, accounting for similar to 74% on average but with considerable monthly variations, which was different from the nearly uniform value of 77% throughout the whole year in the emissions inventory. These highly temporally resolved and speciated in situ aromatics measurements provide observation-based constraints on aromatic emissions, which cannot be obtained from satellite measurements. This study proposes a top-down emission estimation method constrained by ambient measurements. |
英文关键词 | aromatics observation-constrained emissions Shanghai |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000529111600025 |
WOS关键词 | VOLATILE ORGANIC-COMPOUNDS ; YANGTZE-RIVER DELTA ; GAS-PHASE REACTIONS ; MISSING OH SOURCE ; OZONE FORMATION ; ANTHROPOGENIC EMISSIONS ; ATMOSPHERIC CHEMISTRY ; SOURCE APPORTIONMENT ; HO2 CONCENTRATIONS ; DRY DEPOSITION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/280137 |
专题 | 气候变化 |
作者单位 | 1.Shanghai Acad Environm Sci, State Environm Protect Key Lab Format & Prevent U, Shanghai, Peoples R China; 2.Fudan Univ, Shanghai Key Lab Atmospher Particle Pollut & Prev, Inst Atmospher Sci, Dept Environm Sci & Engn, Shanghai, Peoples R China; 3.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA; 4.Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Jiangsu Key Lab Atmospher Environm Monitoring & P, Collaborat Innovat Ctr Atmospher Environm & Equip, Nanjing, Peoples R China; 5.Ocean Univ China, Minist Educ, Key Lab Marine Environm Sci & Ecol, Qingdao, Peoples R China; 6.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Hongli,Yan, Rusha,Xu, Tingting,et al. Observation Constrained Aromatic Emissions in Shanghai, China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(6). |
APA | Wang, Hongli.,Yan, Rusha.,Xu, Tingting.,Wang, Yuhang.,Wang, Qian.,...&Li, Yingjie.(2020).Observation Constrained Aromatic Emissions in Shanghai, China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(6). |
MLA | Wang, Hongli,et al."Observation Constrained Aromatic Emissions in Shanghai, China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.6(2020). |
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