Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-3823-2017 |
Nitrate transboundary heavy pollution over East Asia in winter | |
Itahashi, Syuichi1; Uno, Itsushi2; Osada, Kazuo3; Kamiguchi, Yusuke3,9; Yamamoto, Shigekazu4; Tamura, Kei5; Wang, Zhe2,6; Kurosaki, Yasunori7; Kanaya, Yugo8 | |
2017-03-20 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; Peoples R China |
英文摘要 | High PM2.5 concentrations of around 100 mu gm(3) were observed twice during an intensive observation campaign in January 2015 at Fukuoka (33.52 degrees N, 130.47 degrees E) in western Japan. These events were analyzed comprehensively with a regional chemical transport model and synergetic ground-based observations with state-of-the-art measurement systems, which can capture the behavior of secondary inorganic aerosols (SO42-, NO3-, and NH4+).The first episode of high PM2.5 concentration was dominated by NO3- (type N) and the second episode by SO42- (type S). The concentration of NH4+ (the counterion for SO42- and NO3-/was high for both types. A sensitivity simulation in the chemical transport model showed that the dominant contribution was from transboundary air pollution for both types. To investigate the differences between these types further, the chemical transport model results were examined, and a backward trajectory analysis was used to provide additional information. During both types of episodes, high concentrations of NO3- were found above China, and an air mass that originated from northeast China reached Fukuoka. The travel time from the coastline of China to Fukuoka differed between types: it was 18 h for type N and 24 h for type S. The conversion ratio of SO2 to SO42-(F-s) was less than 0.1 for type N, but reached 0.3 for type S as the air mass approached Fukuoka. The higher F-s for type S was related to the higher relative humidity and the concentration of HO2, which produces H2O2, the most effective oxidant for the aqueous-phase production of SO42-. Analyzing the gas ratio as an indicator of the sensitivity of NO3- to changes in SO42- and NH4+ showed that the air mass over China was NH3- rich for type N, but almost NH3- neutral for type S. Thus, although the high concentration of NO3- above China gradually decreased during transport from China to Fukuoka, higher NO3- concentrations were maintained during transport owing to the lower SO42- for type N. In contrast, for type S, the production of SO42- led to the decomposition of NH4NO3, and more SO42- was transported. Notably, the type N transport pattern was limited to western Japan, especially the island of Kyushu. Transboundary air pollution dominated by SO42- (type S) has been recognized as a major pattern of pollution over East Asia. However, our study confirms the importance of transboundary air pollution dominated by NO3-, which will help refine our understanding of transboundary heavy PM2.5 pollution in winter over East Asia. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397932200003 |
WOS关键词 | LONG-RANGE TRANSPORT ; AIR-QUALITY ; MICS-ASIA ; SENSITIVITY-ANALYSIS ; ATMOSPHERIC AMMONIA ; PARTICULATE NITRATE ; TROPOSPHERIC OZONE ; EMISSION INVENTORY ; NITROGEN-DIOXIDE ; SOURCE REGIONS |
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/21673 |
专题 | 地球科学 |
作者单位 | 1.Cent Res Inst Elect Power Ind, Environm Sci Res Lab, 1646 Abiko, Abiko, Chiba 2701194, Japan; 2.Kyushu Univ, Res Inst Appl Mech, 6-1 Kasuga Pk, Kasuga, Fukuoka 8168580, Japan; 3.Nagoya Univ, Grad Sch Environm Studies, Chikusa Ku, D2-1 510 Furo Cho, Nagoya, Aichi 4648601, Japan; 4.Fukuoka Inst Hlth & Environm Sci, 39 Mukaizano, Dazaifu, Fukuoka 8180135, Japan; 5.Nagasaki Prefectural Environm Affairs Dept, 2-1306-11 Ikeda, Omura, Nagasaki 8560026, Japan; 6.Chinese Acad Sci, Inst Atmospher Phys, 40 Huayanli, Beijing 100029, Peoples R China; 7.Tottori Univ, Arid Land Res Ctr, 1390 Hamasaka, Tottori 6800001, Japan; 8.Japan Agcy Marine Earth Sci & Technol, Kanazawa Ku, 3173-25 Showa Machi, Yokohama, Kanagawa 2360001, Japan; 9.JCB Co Ltd, Tokai Reg Off, Naka Ku, 2-16-26 Nishiki, Nagoya, Aichi 4600003, Japan |
推荐引用方式 GB/T 7714 | Itahashi, Syuichi,Uno, Itsushi,Osada, Kazuo,et al. Nitrate transboundary heavy pollution over East Asia in winter[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(6). |
APA | Itahashi, Syuichi.,Uno, Itsushi.,Osada, Kazuo.,Kamiguchi, Yusuke.,Yamamoto, Shigekazu.,...&Kanaya, Yugo.(2017).Nitrate transboundary heavy pollution over East Asia in winter.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(6). |
MLA | Itahashi, Syuichi,et al."Nitrate transboundary heavy pollution over East Asia in winter".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.6(2017). |
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