| 七大区域不同温湿条件下臭氧浓度变化 |
| 摘要点击 4149 全文点击 929 投稿时间：2022-09-27 修订日期：2022-12-27 |
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| 中文关键词 臭氧(O3) 温度惩罚因子 湿度惩罚因子 温湿协同影响 气象条件 |
| 英文关键词 ozone (O3) temperature penalty factor relative humidity penalty factor the co-effect of temperature and humidity meteorological condition |
| 作者 | 单位 | E-mail | | 刘静达 | 南京科略环境科技有限责任公司, 南京 211800
无锡中科光电技术有限公司, 无锡 214135 | jingda_liu@cas-pe.com | | 何超 | 江苏省生态环境监测监控有限公司, 南京 210019 | | | 赵舒曼 | 德州学院化学化工学院, 德州市臭氧污染防治工程实验室, 德州 253023 | | | 朱俊 | 南京科略环境科技有限责任公司, 南京 211800
无锡中科光电技术有限公司, 无锡 214135 | | | 汪巍 | 中国环境监测总站, 北京 100012 | wangwei@cnemc.cn | | 王莉莉 | 中国科学院大气物理研究所大气边界层物理与大气化学国家重点实验室, 北京 100029 | | | 王跃思 | 中国科学院大气物理研究所大气边界层物理与大气化学国家重点实验室, 北京 100029 | |
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| 中文摘要 |
| 近年来，我国臭氧（O3）污染形势日趋严峻，在多地已超越PM2.5成为大气环境的首要污染物.气象条件，尤其是温度和湿度对O3生成的影响极大.因此，厘清并量化不同区域温度和湿度变化对O3浓度的影响可为政府防治臭氧污染提供理论依据.通过分析2015年1月1日至2022年7月31日实测日最大温度（Tmax）和相对湿度（RH）与臭氧日最大8 h滑动平均值（O3-8h）的关系，发现臭氧污染严重的七大区域的O3-8h与Tmax呈线性正相关关系，温度惩罚因子范围为2.1~6.0 μg ·（m3 ·℃）-1；O3-8h与RH呈非线性关系，RH为55%时O3-8h最高；不同区域对Tmax和RH的敏感度稍有不同，总体上最适合O3生成的气象条件为29℃≤Tmax<38℃且40%≤RH<70%.长三角、苏皖鲁豫和长江中游地区在Tmax≥35℃的极端高温条件下，O3-8h停止随温度的上升而增长，反而出现下降现象，且往往伴随颗粒物浓度的小幅上升.这可能与部分前体物在水汽含量变高的情况下发生非均相反应及臭氧的非均相汇增加有关. |
| 英文摘要 |
| In recent years, the situation of ozone pollution in China has become increasingly severe, with PM2.5 being the main pollutant in the atmospheric environment of several cities. Meteorological conditions, particularly temperature and humidity, have a great influence on ozone formation. Therefore, understanding and quantifying the impact of the variation in temperature and humidity on ozone level can effectively provide the theoretical basis for the government to prevent and control ozone pollution. By analyzing the relationship among the daily maximum temperature (Tmax), relative humidity (RH), and the maximum 8-h running average ozone (O3-8h) measured from January 1, 2015 to July 31, 2022, a linear positive correlation between O3-8h and Tmax was observed in the seven regions with serious ozone pollution, and the temperature penalty factor ranged from 2.1-6.0 μg·(m3·℃)-1; a nonlinear correlation between O3-8h and RH was also observed, and O3-8h was the highest when RH was 55%. The sensitivity of different regions to Tmax and RH was slightly different; generally, the most suitable meteorological conditions for ozone formation were 29℃ ≤ Tmax< 38℃ and 40% ≤ RH<70%. In the Yangtze River Delta, Jiangsu-Anhui-Shandong-Henan, and the middle reaches of the Yangtze River, under extreme high temperature conditions (Tmax ≥ 35℃), O3-8h stopped increasing with the increase in temperature and even dropped; simultaneously, it was often accompanied with a small increase in particulate matter. It may be related to the heterogeneous reaction of some precursors with higher water vapor content and the increase in ozone heterogeneous sink. |
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