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Spatiotemporal Distribution, Sources, and Impact on Atmospheric Oxidation of Reactive Nitrogen Oxides in the North China Plain Agricultural Regions in Summer

文献类型：期刊论文

作者Wei, Shaocong5; Hong, Qianqian1; Tan, Wei7; Chen, Jian5; Li, Tianhao5; Wang, Xiaohan5; Xue, Jingkai2; Fang, Jiale5; Liu, Chao7; Tanvir, Aimon3
刊名REMOTE SENSING
出版日期2024-09-01
卷号16
关键词HONO vertical profile source hydroxyl radicals
DOI10.3390/rs16173192
通讯作者Hong, Qianqian(hongqq@cwxu.edu.cn)
英文摘要The lack of vertical observation of reactive nitrogen oxides in agricultural areas has posed a significant challenge in fully understanding their sources and impacts on atmospheric oxidation. Ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) observations were conducted in the agricultural regions of the North China Plain (NCP) during the summer of 2019 to measure the vertical distributions of aerosols, nitrogen dioxide (NO2), and nitrous acid (HONO). This study aimed at revealing the spatiotemporal distribution, sources, and environmental effects of reactive nitrogen oxides in the NCP agricultural areas. Our findings indicated that the vertical profiles of aerosols and NO2 exhibited a near-Gaussian distribution, with distinct peak times occurring between 8:00-10:00 and 16:00-18:00. HONO reached its maximum concentration near the surface around 8:00 in the morning and decreased exponentially with altitude. After sunrise, the concentration of HONO rapidly decreased due to photolysis. Additionally, the potential source contribution function (PSCF) was used to evaluate the potential sources of air pollutants. The results indicated that the main potential pollution sources of aerosols were located in the southern part of the Hebei, Shanxi, Shandong, and Jiangsu provinces, while the potential pollution sources of NO2 were concentrated in the Beijing-Tianjin-Hebei region. At altitudes exceeding 500 m, the heterogeneous reactions of NO2 on aerosol surfaces were identified as one of the important contributors to the formation of HONO. Furthermore, we discussed the production rate of hydroxyl radicals (OH) from HONO photolysis. It was found that the production rate of OH from HONO photolysis decreased with altitude, with peaks occurring in the morning and late afternoon. This pattern was consistent with the variations in HONO concentration, indicating that HONO was the main contributor to OH production in the agricultural regions of the NCP. This study provides a new perspective on the sources of active nitrogen in agricultural regions and their contribution to atmospheric oxidation capacity from a vertical perspective.
WOS关键词ABSORPTION CROSS-SECTIONS ; MAX-DOAS MEASUREMENTS ; ACID HONO ; RURAL SITE ; VERTICAL DISTRIBUTIONS ; BOUNDARY-LAYER ; COLUMN DENSITIES ; DAYTIME HONO ; NO2 ; EMISSION
资助项目National Natural Science Foundation of China ; National Key Research and Development Program of China[2023YFC3705300] ; Natural Science Fund of Jiangsu Province[BK20210485] ; Wuxi University Research Start-up Fund for Introduced Talents[2024r040] ; [U21A2027] ; [42207113] ; [42307135]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种英语
WOS记录号WOS:001311828300001
出版者MDPI
资助机构National Natural Science Foundation of China ; National Key Research and Development Program of China ; Natural Science Fund of Jiangsu Province ; Wuxi University Research Start-up Fund for Introduced Talents
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/135242]  
专题中国科学院合肥物质科学研究院
通讯作者Hong, Qianqian
作者单位1.Wuxi Univ, Key Lab Ecosyst Carbon Source & Sink, China Meteorol Adm, Wuxi 214105, Peoples R China
2.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Peoples R China
3.Hohai Univ, Coll Oceanog, Nanjing 210024, Peoples R China
4.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
5.Univ Sci & Technol China, Dept Precis Machinery & Precis Instrumentat, Hefei 230026, Peoples R China
6.Univ Sci & Technol China, Key Lab Precis Sci Instrumentat, Anhui Higher Educ Inst, Hefei 230026, Peoples R China
7.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Wei, Shaocong,Hong, Qianqian,Tan, Wei,et al. Spatiotemporal Distribution, Sources, and Impact on Atmospheric Oxidation of Reactive Nitrogen Oxides in the North China Plain Agricultural Regions in Summer[J]. REMOTE SENSING,2024,16.
APA Wei, Shaocong.,Hong, Qianqian.,Tan, Wei.,Chen, Jian.,Li, Tianhao.,...&Liu, Cheng.(2024).Spatiotemporal Distribution, Sources, and Impact on Atmospheric Oxidation of Reactive Nitrogen Oxides in the North China Plain Agricultural Regions in Summer.REMOTE SENSING,16.
MLA Wei, Shaocong,et al."Spatiotemporal Distribution, Sources, and Impact on Atmospheric Oxidation of Reactive Nitrogen Oxides in the North China Plain Agricultural Regions in Summer".REMOTE SENSING 16(2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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