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首页> 外文期刊>Aerosol and Air Quality Research >Diagnosis of Photochemical Ozone Production Rates and Limiting Factors in Continental Outflow Air Masses Reaching Fukue Island, Japan: Ozone-Control Implications
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Diagnosis of Photochemical Ozone Production Rates and Limiting Factors in Continental Outflow Air Masses Reaching Fukue Island, Japan: Ozone-Control Implications

机译：到达日本福江岛的大陆外流气团中光化学臭氧产生速率和限制因素的诊断：臭氧控制的含义

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Asian continental outflow air masses reach western Japan in the springtime, carrying high levels of ozone produced over the Asian continent, and facilitating in-situ production. In this study, in-situ production was highlighted; the rate and limiting factors of net ozone production were diagnosed at Fukue Island, a remote island west of Japan, on 17 days during May–June 2009, when the continental outflow air mass arrived, using an observation-based modeling approach. The average ozone production was estimated to be 6.8 ppb per day. Information on the chemical status of the arriving air mass is important, because it affects how further ozone production in the air mass occurs after precursor addition from Japanese domestic emissions. The main limiting factor of ozone production for such air masses was usually nitrogen oxides (NOx), suggesting that domestic NOx emission control is important in reducing further ozone production. Volatile organic compounds (VOCs) also increased the ozone production rate, and occasionally (14% of time) became the dominant controlling factor. This analysis implies that the VOC reduction legislation recently enacted by the Japanese government should be effective. VOC-limited conditions occurred particularly when the air mass traveled within 6?8 h, via the Korean Peninsula. The uncertainty in the radical chemistry mechanism governing ozone production had a non-negligible impact, but the main conclusion relevant to policy was not altered. When chain termination was augmented by HO2 + NO/NO2 reactions in the presence of H2O and by heterogeneous loss of HO2 on aerosol particle surfaces, as recently verified or hypothesized, the daily ozone production rate decreased by up to 24%, and the fraction of hours when the VOC-limited condition occurred varied from 14% to 13?26%.
机译：亚洲大陆的流出空气团在春季到达日本西部，携带了整个亚洲大陆产生的大量臭氧，并促进了就地生产。在这项研究中，强调了原位生产。在2009年5月至6月的17天内，日本大陆偏远岛屿的福江岛（Fukue Island）使用基于观测的建模方法，对臭氧净产生量的速率和限制因素进行了诊断，当时大陆流出的空气团到达了。每天平均臭氧产量估计为6.8 ppb。关于到达的空气团的化学状态的信息很重要，因为它会影响在日本国内排放的前体添加后，空气团中进一步产生臭氧的方式。对于这种空气质量而言，臭氧生产的主要限制因素通常是氮氧化物（NOx），这表明，控制国内NOx排放对于减少进一步的臭氧生产很重要。挥发性有机化合物（VOC）也提高了臭氧的产生率，偶尔（占时间的14％）成为主要的控制因素。该分析表明，日本政府最近颁布的减少VOC的立法应该是有效的。 VOC限制条件尤其是当空气团在6-8小时内通过朝鲜半岛传播时发生。控制臭氧生产的自由基化学机理的不确定性具有不可忽略的影响，但与政策有关的主要结论没有改变。如最近证实或假设的那样，当存在H2O时，HO2 + NO / NO2反应和气溶胶颗粒表面HO2的异质损失增加链终止作用时，每日臭氧产生率最多降低24％，而VOC限制条件发生的小时数在14％到13％至26％之间。

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