Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.10.008 |
The impacts of "urban-induced heavy rains" on the distribution of deposition fluxes of inorganic acidic substances in the Tokyo metropolitan area in summer | |
Uchiyama, Ryunosuke; Okochi, Hiroshi; Kamiya, Junichi; Asai, Daisuke; Kaneko, Chiho; Ogata, Hiroko; Katsumi, Naoya | |
2018-02-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2018 |
卷号 | 200页码:109-116 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | We analyzed the trends in rainfall amounts and the number of heavy rain events with hourly rainfall amounts over 30 mm at the inland section of the 23-ward Tokyo metropolitan area (nine wards and ten sites) in the warm season (July to September) from 1978 to 2008. Heavy rain events in the Nerima Ward occurred nine times during decade I (1978-1987; 0.90 times/yr), 13 times during decade II (1988-1997; 1.3 times/yr), and 23 times during decade III (1998-2008; 2.1 times/yr). The annual average number of heavy rain events was 1.43 times/yr in Nerima from 1978 to 2008, while it was 0.98 times/yr on average at nine locations excluding Nerima. The frequency of extremely strong heavy rain events with hourly rainfall amounts greater than 50 mm during decade III was the highest in Nerima (six times) among ten sites. These data suggest that the frequency of heavy rain events has increased at Nerima during the past 30 years. Bulk precipitation data were collected biweekly by filtration-type collectors at 14 sites around Nerima from 2008 to 2010 to determine the impacts of urban-induced heavy rains (hereafter UHR), defined as a heavy rain event other than typhoons and frontal heavy rains, on the distribution of deposition fluxes of inorganic acidic substances. The NO3- and nss-SO42- concentrations in bulk precipitation were higher during the periods including UHR than those not including UHR. The deposition fluxes of NO3- and SO42- showed clear differences at the center of UHR (NO3-: 231 mu eq/m(2)/d, SO42-: 234 mu eq/m(2)/d) and its surrounding area (NO3-: 76.4 mu eq/m(2)/d, SO42 -: 86.1 mu eq/m(2)/d). Our results suggest that large amounts of inorganic acidic substances are deposited locally by UHR in urban areas in summer. |
英文关键词 | Heavy rain Urban heat island Air pollutants Inorganic acidic substances Anthropogenic Deposition |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416394400010 |
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/38523 |
专题 | 地球科学 |
作者单位 | Waseda Univ, Grad Sch Creat Sci & Engn, Shinjuku Ku, Okubo 3-4-1, Tokyo 1698555, Japan |
推荐引用方式 GB/T 7714 | Uchiyama, Ryunosuke,Okochi, Hiroshi,Kamiya, Junichi,et al. The impacts of "urban-induced heavy rains" on the distribution of deposition fluxes of inorganic acidic substances in the Tokyo metropolitan area in summer[J]. ATMOSPHERIC RESEARCH,2018,200:109-116. |
APA | Uchiyama, Ryunosuke.,Okochi, Hiroshi.,Kamiya, Junichi.,Asai, Daisuke.,Kaneko, Chiho.,...&Katsumi, Naoya.(2018).The impacts of "urban-induced heavy rains" on the distribution of deposition fluxes of inorganic acidic substances in the Tokyo metropolitan area in summer.ATMOSPHERIC RESEARCH,200,109-116. |
MLA | Uchiyama, Ryunosuke,et al."The impacts of "urban-induced heavy rains" on the distribution of deposition fluxes of inorganic acidic substances in the Tokyo metropolitan area in summer".ATMOSPHERIC RESEARCH 200(2018):109-116. |
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