GSTDTAP  > 气候变化
DOI10.1002/2017JD026803
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
ISSN2169-897X
EISSN2169-8996
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
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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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