Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD026803 |
The impact of air pollutants on rainwater chemistry during "urban-induced heavy rainfall" in downtown Tokyo, Japan | |
Uchiyama, Ryunosuke; Okochi, Hiroshi; Katsumi, Naoya; Ogata, Hiroko | |
2017-06-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | In order to clarify the impact of air pollution on the formation of sudden and locally distributed heavy rain in urban areas (hereafter UHR = urban-induced heavy rain), we analyzed inorganic ions in rainwater samples collected on an event basis over 5 years from October 2012 to December 2016 in Shinjuku, Tokyo. Hourly rainfall amounts and wet deposition fluxes of acidic components (the sum of H+, NH4+, NO3-, and nonsea-salt SO42-) in UHR were 13.1 and 17.8 times larger than those in normal rainfall, respectively, indicating that large amount of air pollutants were scavenged and deposited by UHR with large amounts of rainfall. The level of air pollutants, such as NO2, SO2, and potential ozone, in the ambient air increased just before the formation of UHR and decreased sharply at the end of the UHR event. These results indicate that NO2, which was formed secondarily by oxidants, was further oxidized by HO radicals and formed HNO3 just before the formation of UHR, which was subsequently scavenged by UHR. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405514000022 |
WOS关键词 | SUMMER ; PRECIPITATION ; AEROSOLS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/33257 |
专题 | 气候变化 |
作者单位 | Waseda Univ, Grad Sch Creat Sci & Engn, Shinjuku Ku, Tokyo, Japan |
推荐引用方式 GB/T 7714 | Uchiyama, Ryunosuke,Okochi, Hiroshi,Katsumi, Naoya,et al. The impact of air pollutants on rainwater chemistry during "urban-induced heavy rainfall" in downtown Tokyo, Japan[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(12). |
APA | Uchiyama, Ryunosuke,Okochi, Hiroshi,Katsumi, Naoya,&Ogata, Hiroko.(2017).The impact of air pollutants on rainwater chemistry during "urban-induced heavy rainfall" in downtown Tokyo, Japan.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(12). |
MLA | Uchiyama, Ryunosuke,et al."The impact of air pollutants on rainwater chemistry during "urban-induced heavy rainfall" in downtown Tokyo, Japan".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.12(2017). |
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