| 广东省夏秋季光化学反应活性空间分布表征 |
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| 引用本文： | 唐梦雪,黄晓锋,程勇,林晓玉,姚沛廷,胡仁志,邓涛,何凌燕.广东省夏秋季光化学反应活性空间分布表征[J].中国环境科学,2023,43(1):1-6. |
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| 作者姓名： | 唐梦雪 黄晓锋 程勇 林晓玉 姚沛廷 胡仁志 邓涛 何凌燕 |
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| 作者单位： | 1. 北京大学深圳研究生院, 环境与能源学院, 大气观测超级站点实验室, 广东 深圳 518055;2. 中国科学院合肥物质科学研究院安徽光学精密机械研究所, 中国科学院环境光学与技术重点实验室, 安徽 合肥 230031;3. 中国气象局, 广州热带海洋气象研究所, 广东 广州 510640 |
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| 基金项目： | 国家重点研发计划项目(2018YFC0213901);深圳市科技计划项目(JCYJ20200109110625819) |
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| 摘 要： | 于夏末秋初在深圳市城市和郊区开展了大气OH自由基观测,结果显示OH自由基日间峰值平均浓度分别为6.0×106cm-3和5.9×106cm-3,与国内外其他地区相比处于中等水平.基于实测数据构建了拟合效果较好的本地化OH自由基参数化公式,应用于广东省OH自由基空间分布的表征,并进一步利用日间OH和NO2浓度之积反映光化学反应活性(AP).结果发现,2018年夏秋季广东省大气光化学反应活性总体上呈现珠江三角洲较高,AP达10.1×107μg/(m3·cm3),粤东、粤西、粤北地区较低的分布态势,AP分别为5.4×107, 5.9×107和7.7×107μg/(m3·cm3);同期的PM2.5和O3高值区域也集中在珠江三角洲,说明了调控光化学反应活性对珠江三角洲协同控...
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| 关 键 词： | 光化学反应活性 OH自由基 前体物 臭氧(O3) 细颗粒物(PM2.5) |
| 收稿时间： | 2022-06-09 |
Study on characterizing the spatial distribution of activity of photochemistry in summer and autumn in Guangdong Province,China |
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| TANG Meng-xue,HUANG Xiao-feng,CHENG yong,LIN Xiao-yu,YAO Pei-ting,HU Ren-zhi,DENG Tao,HE Ling-yan.Study on characterizing the spatial distribution of activity of photochemistry in summer and autumn in Guangdong Province,China[J].China Environmental Science,2023,43(1):1-6. |
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| Authors: | TANG Meng-xue HUANG Xiao-feng CHENG yong LIN Xiao-yu YAO Pei-ting HU Ren-zhi DENG Tao HE Ling-yan |
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| Affiliation: | 1. Laboratory of Atmospheric Observation Supersite, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, China;2. Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institues of Physical Science, Chinese Academy of Sciences, Hefei 230031, China;3. Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510640, China |
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| Abstract: | OH radicals were observed at urban and rural sites in the late summer and early autumn in Shenzhen, China. The daytime peak average concentrations of OH radicals were 6.0×106cm-3 and 5.9×106cm-3, which were at a moderate level compared to other regions around the world. Based on the observed data, a parameterized formula of OH radicals, with good fitting, was constructed to characterize the spatial distribution of OH radicals in Guangdong Province. The activity of photochemistry (AP) was reflected by the product of daytime OH and NO2 concentrations. Generally, higher AP (10.1×107μg/(m3·cm3)) was found in the Pearl River Delta (PRD) and the lower AP in eastern, western and northern Guangdong (5.4×107,5.9×107 and 7.7×107μg/(m3·cm3)). Higher concentrations of PM2.5 and O3 were also found in the PRD, indicating a key role of regulating AP in the coordinated control of PM2.5 and O3 pollution in the PRD. The spatial distribution characteristics also showed that northern Guangdong and eastern Guangdong were significantly affected by the regional transport of PM2.5 from the northern inland and the regional transport of O3 from the southeast coast, respectively, reflecting the importance of regional joint control to jointly mitigate PM2.5 and O3 pollution. |
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| Keywords: | activity of photochemistry OH radical precursor ozone (O3) fine particulate matter (PM2 5) |
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