Vertical Distribution, Diurnal Evolution, and Source Region of Formaldehyde During the Warm Season Under Ozone-Polluted and Non-Polluted Conditions in Nanjing, China
文献类型：期刊论文
| 作者 | Cheng, Keqiang3; Xie, Mingjie3; Wang, Yuhang2; Lu, Yahan1 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 16期号:22页码:17 |
| 关键词 | formaldehyde vertical profile diurnal evolution potential source region MAX-DOAS |
| DOI | 10.3390/rs16224313 |
| 产权排序 | 3 |
| 英文摘要 | Formaldehyde (HCHO), a key volatile organic compound (VOC) in the atmosphere, plays a crucial role in driving photochemical processes. Satellite-based observations of column concentrations of HCHO and other gaseous pollutants (e.g., NO2) have generally been used in previous studies to elucidate the mechanisms behind secondary organic aerosol (SOA) and ozone (O-3) formation. This study aimed to investigate the characteristics of HCHO by retrieving its vertical profile over Nanjing during the warm season (May-June 2022) and analyzing the diurnal variation in vertical distribution and potential source regions on non-polluted (MDA8 O-3 < 160 mu g m(-3), NO3P) and O-3-polluted (MDA8 O-3 >= 160 mu g m(-3), O3P) days. Under both conditions, HCHO was primarily concentrated below 1.5 km altitude, with average vertical profiles displaying similar Boltzmann-like distributions. However, HCHO concentrations on O3P days were 1.2-1.6 times higher than those on non-polluted days at the same altitude below 1.5 km. Maximum HCHO concentrations occurred in the afternoon, while the peak value in the 0.1-0.4 km layers was reached around noon (similar to 11:00 a.m.). The variation rates (VR) of HCHO in the 0.3-1.2 km altitudes had a maximum on O3P days (approximately 0.33 ppbv h(-1)), and were significantly higher (p < 0.01) than the VR observed on NO3P days (0.14-0.20 ppbv h(-1)). The analysis of footprints showed that HCHO concentrations were jointly influenced by the upstream region and the surroundings of the study site. The study results improve the understanding of the vertical distribution and potential source regions of HCHO. |
| WOS关键词 | VOLATILE ORGANIC-COMPOUNDS ; ABSORPTION CROSS-SECTIONS ; YANGTZE-RIVER DELTA ; MAX-DOAS MEASUREMENTS ; SOURCE APPORTIONMENT ; SURFACE OZONE ; TEMPERATURE ; URBAN ; HCHO ; DEPENDENCE |
| 资助项目 | National Natural Science Foundation of China ; [42177211] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:001367231200001 |
| 出版者 | MDPI |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/211457]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Xie, Mingjie |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA 3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equipm, Sch Environm Sci & Engn, Jiangsu Key Lab Atmospher Environm Monitoring & Po, 219 Ningliu Rd, Nanjing 210044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Keqiang,Xie, Mingjie,Wang, Yuhang,et al. Vertical Distribution, Diurnal Evolution, and Source Region of Formaldehyde During the Warm Season Under Ozone-Polluted and Non-Polluted Conditions in Nanjing, China[J]. REMOTE SENSING,2024,16(22):17. |
| APA | Cheng, Keqiang,Xie, Mingjie,Wang, Yuhang,&Lu, Yahan.(2024).Vertical Distribution, Diurnal Evolution, and Source Region of Formaldehyde During the Warm Season Under Ozone-Polluted and Non-Polluted Conditions in Nanjing, China.REMOTE SENSING,16(22),17. |
| MLA | Cheng, Keqiang,et al."Vertical Distribution, Diurnal Evolution, and Source Region of Formaldehyde During the Warm Season Under Ozone-Polluted and Non-Polluted Conditions in Nanjing, China".REMOTE SENSING 16.22(2024):17. |
入库方式： OAI收割
来源：地理科学与资源研究所
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