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| 苏州城市气溶胶和臭氧相互作用的观测分析 |
| Observation Analysis on Aerosol and Ozone Interaction in Suzhou |
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| DOI： |
| 中文关键词: 气溶胶 臭氧 向下短波辐射 非均相化学反应 苏州 |
| 英文关键词: Aerosol Ozone Downward shortwave radiation Heterogeneous chemical reaction Suzhou |
| 基金项目:国家自然科学基金资助项目（41575141）；国家重点研发计划基金资助项目（2017YFC0209600）；国家重点基础研究发展规划“九七三”基金资助项目（2014CB441203）；江苏省气候变化协同创新中心基金资助项目 |
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| 中文摘要: |
| 利用2014年苏州地区观测资料对城市气溶胶与O3之间的相互作用进行研究，结果表明：苏州市晴空指数（CI）与PM10、PM2.5呈显著负相关；PM10、PM2.5质量浓度每增加1 μg/m3，晴天条件下白天向下短波辐射（DSR）分别下降148 W/m2和1.52 W/m2；DSR与O3呈显著正相关；O3与PM10、PM2.5呈负相关，表明气溶胶对O3浓度存在衰减作用。2014年11月10日—12日个例研究表明，在到达地面的DSR几乎不变的情况下，气溶胶与O3之间发生非均相化学反应，造成O3浓度降低。2014年12月13日—14日个例研究表明，气溶胶通过对太阳辐射的消光作用，造成到达地面的DSR减弱，O3浓度降低。 |
| 英文摘要: |
| The observation data from Suzhou were studied on the interaction between aerosol and ozone. The results showed that PM10 and PM2.5 were negatively correlated with clearness index. On average, in the daytime of fine weather, a 1 μg/m3 increase in PM10 or PM2.5 〖JP2〗concentration was associated with 1.48 W/m2 or 1.52 W/m2 〖JP〗decrease in downward shortwave radiation （DSR）, respectively. Ozone was significantly positive correlated with DSR, and negative correlated with PM10 or PM2.5. Aerosol had the effect on O3 reduction. Case study showed that during the research period of November 10th to 12th, 2014, when the DSR reaching to the ground was almost unchanged, heterogeneous chemical reaction happened between aerosol and O3, resulting in decreasing of O3 concentration. According to case study through December 13th to 14th, 2014, the DSR on the ground and ozone decreased by aerosols extinction for solar radiation. |
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