Investigating vertical distributions and photochemical indications of formaldehyde, glyoxal, and NO2 from MAX-DOAS observations in four typical cities of China
文献类型：期刊论文
| 作者 | Hong, Qianqian2; Xing, Jingchen1; Xing, Chengzhi6; Yang, Baixue1; Su, Wenjing7; Chen, Yujia3,8; Zhang, Chengxin4; Zhu, Yizhi5; Liu, Cheng4,6 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 954 |
| 关键词 | Formaldehyde Glyoxal VOCs sources Ozone formation sensitivity MAX-DOAS |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2024.176447 |
| 通讯作者 | Xing, Chengzhi(xingcz@aiofm.ac.cn) ; Liu, Cheng(chliu81@ustc.edu.cn) |
| 英文摘要 | Formaldehyde (HCHO), glyoxal (CHOCHO), and nitrogen dioxide (NO2) are crucial in atmospheric photochemical processes at both surface and elevated altitudes. This study presents synchronous multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements of the vertical distributions of summertime HCHO, CHOCHO and NO2 in four representative megacities within the Beijing-Tianjin-Hebei (BTH), Yangtze River Delta (YRD), Sichuan Basin (SB), and Pearl River Delta (PRD) regions of China. The vertical distributions of HCHO and CHOCHO tended to occur at higher altitudes compared to NO2, influenced by both primary emissions near the ground and photochemical oxidation processes at elevated altitudes. Source separation regression analysis using the CO-CHOCHO trace pair identified secondary formation as the predominant source of ambient HCHO. In urban areas, the ratio of CHOCHO to secondary HCHO (R-GFsec) serves as a more reliable metric at ground level for diagnosing VOC precursor sources, excluding the interference of primary and background HCHO. The increase in R-GF values at higher altitudes highlights the relative contribution of VOCs favoring CHOCHO production. Moreover, four indicators (e.g. FNR, FNRsec, GNR, and MNR) were utilized to characterize O-3 formation sensitivity at different altitudes. The range of FNR, FNRsec, GNR, and MNR marking the O-3 formation sensitivity regime varies regionally, highlighting the need for localized assessments. The VOC-limited regime dominated at the ground level, whereas the contribution of the NOx-limited regime increased with altitude. Therefore, a comprehensive control strategy addressing both VOC and NOx emissions across different altitudes is essential for effectively mitigating photochemical pollution in urban areas of China. |
| WOS关键词 | ABSORPTION CROSS-SECTIONS ; PROFILE RETRIEVAL ALGORITHMS ; SLANT COLUMN MEASUREMENTS ; PEARL RIVER DELTA ; SECONDARY SOURCES ; SURFACE OZONE ; EMISSIONS ; SATELLITE ; HCHO ; METHYLGLYOXAL |
| 资助项目 | National Natural Science Foundation of China[42307135] ; Natural Science Foundation of Jiangsu Province[BK20210485] ; Wuxi University Research Start-up Fund for Introduced Talents[2024r040] ; Key Research Program of Frontier Sciences, CAS[ZDBS-LY-DQC008] ; Opening Project of Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3)[FDLAP21009] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001322161000001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province ; Wuxi University Research Start-up Fund for Introduced Talents ; Key Research Program of Frontier Sciences, CAS ; Opening Project of Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3) |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/135749]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Xing, Chengzhi; Liu, Cheng |
| 作者单位 | 1.Jiangnan Univ, Sch Environm & Ecol, Wuxi 214122, Peoples R China 2.Wuxi Univ, Key Lab Ecosyst Carbon Source & Sink, China Meteorol Adm ECSS CMA, Wuxi 214105, Peoples R China 3.Huaihe River Basin Typ Farm Ecometeorol Expt Field, Shouxian Natl Climatol Observ, Shouxian 232200, Peoples R China 4.Univ Sci & Technol China, Dept Precis Machinery & Precis Instrumentat, Hefei 230026, Peoples R China 5.Suzhou Univ Sci & Technol, Sch Environm Sci & Engn, Suzhou 215009, Peoples R China 6.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 7.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China 8.Anhui Inst Meteorol Sci, Anhui Prov Key Lab Atmospher Sci & Satellite Remot, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hong, Qianqian,Xing, Jingchen,Xing, Chengzhi,et al. Investigating vertical distributions and photochemical indications of formaldehyde, glyoxal, and NO2 from MAX-DOAS observations in four typical cities of China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,954. |
| APA | Hong, Qianqian.,Xing, Jingchen.,Xing, Chengzhi.,Yang, Baixue.,Su, Wenjing.,...&Liu, Cheng.(2024).Investigating vertical distributions and photochemical indications of formaldehyde, glyoxal, and NO2 from MAX-DOAS observations in four typical cities of China.SCIENCE OF THE TOTAL ENVIRONMENT,954. |
| MLA | Hong, Qianqian,et al."Investigating vertical distributions and photochemical indications of formaldehyde, glyoxal, and NO2 from MAX-DOAS observations in four typical cities of China".SCIENCE OF THE TOTAL ENVIRONMENT 954(2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
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