文章基本信息

标题：Meteorological and Chemical Behavior of Gaseous Sulfur Compounds in and around an Urban Valley
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作者：Sang-Keun Song ; Yoo-Keun Kim ; Zang-Ho Shon 等
期刊名称：Terrestrial Atmospheric and Oceanic Sciences
印刷版ISSN：1017-0839
出版年度：2010
卷号：21
期号：6
页码：971-982
DOI：10.3319/TAO.2010.04.28.01(A)
出版社：Chinese Geoscience Union
摘要：The effects of photochemical oxidation of reduced sulfur compounds (RSCs: H 2 S, CH 3 SH, DMS, and DMDS) on SO 2 production were evaluated at high (HV) and low ventilation (LV) conditions, based on a CALPUFF dispersion model coupled with photo-chemical oxidation mechanisms for four RSCs. The RSC emission concentrations used in the modeling were measured in and around an urban valley during a field campaign held in October 2008. SO 2 production with LV (up to 156 ppb at 0900 LST) was found to be significantly higher than that with HV (up to 30 ppb). SO 2 produced by photochemical oxidation of RSCs with LV (78% of total SO2 concentrations) was much higher than that with HV (27%), while the predominant RSC species were similar: DMDS (>= 60% of the total contributions) with HV and LV when compared to three other RSCs (< 20%). The difference in SO 2 concentration between HV and LV might be caused by the combined effects of photochemical oxidation of RSCs and ventilation condition.
关键词：Photochemical oxidation; Ventilation; Urban valley; DMDS; SO2;