Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aae492 |
Evidence of heterogeneous HONO formation from aerosols and the regional photochemical impact of this HONO source | |
Lu, Xingcheng1; Wang, Yuhang2; Li, Jianfeng2; Shen, Lu3; Fung, Jimmy C. H.1,4 | |
2018-11-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Large missing daytime HONO sources have been reported by many previous studies around the world. Possible HONO sources include ground heterogeneous conversion, aerosol heterogeneous formation, soil emission, and photochemical production. In this study, a consistent 1D framework based on regional and 3D chemical transport models (CTMs) was used to analyze the unknown daytime HONO sources in 14 cases worldwide. We assume that the source of HONO from aerosols is through NO2 hydrolysis (not including its oxidation products) and that non-local mixing effect is negligible. Assuming all the missing unknown HONO source is from the ground, it would imply a NO2-to-HONO ground heterogeneous conversion exceeding 100% in daytime, which is unphysical. In contrast, a strong R-2 reaching up to 0.92 is found between the unknown HONO sources and the products of aerosol wet surface area and short-wave radiation. Because the largest unknown daytime HONO sources are found in China due to high concentrations of aerosols and NO2, we derive an optimized NO2 uptake coefficient on the basis of these measurements. The 3D CTM simulations suggest that in some regions of central, eastern, and southwestern (e.g. SiChuan province) China, the aerosol HONO source has the greatest effects on ozone (>10 ppbv) and OH (>200%) in winter. In January, the simulated particulate sulfate level over these three regions increases by 6-10 mu g m(-3) after including the aerosol-HONO source, which helps reduce the previous model underestimation of sulfate production in winter. Additional measurement studies that target the daytime HONO sources will be essential to abetter understanding of the mechanisms and resulting effects on atmospheric oxidants. |
英文关键词 | 1D framework aerosol unknown HONO regional impact heterogeneous conversion |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000448502200002 |
WOS关键词 | NITROUS-ACID ; ATMOSPHERIC REACTIVITY ; VERTICAL PROFILES ; DAYTIME SOURCE ; N2O EMISSIONS ; RURAL SITE ; SURFACE ; NO2 ; CONVERSION ; CHEMISTRY |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/15061 |
专题 | 气候变化 |
作者单位 | 1.Hong Kong Univ Sci & Technol, Div Environm & Sustainabil, Hong Kong, Peoples R China; 2.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA; 3.Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA; 4.Hong Kong Univ Sci & Technol, Dept Math, Hong Kong, Peoples R China |
推荐引用方式 GB/T 7714 | Lu, Xingcheng,Wang, Yuhang,Li, Jianfeng,et al. Evidence of heterogeneous HONO formation from aerosols and the regional photochemical impact of this HONO source[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(11). |
APA | Lu, Xingcheng,Wang, Yuhang,Li, Jianfeng,Shen, Lu,&Fung, Jimmy C. H..(2018).Evidence of heterogeneous HONO formation from aerosols and the regional photochemical impact of this HONO source.ENVIRONMENTAL RESEARCH LETTERS,13(11). |
MLA | Lu, Xingcheng,et al."Evidence of heterogeneous HONO formation from aerosols and the regional photochemical impact of this HONO source".ENVIRONMENTAL RESEARCH LETTERS 13.11(2018). |
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