研究报告
徐紫碟,顾晨,夏思佳,李荔,朱文琳,张磊,赵瑜.气象条件和排放变化对江苏省2015—2019年臭氧浓度年际变化的影响研究[J].环境科学学报,2022,42(8):1-12
气象条件和排放变化对江苏省2015—2019年臭氧浓度年际变化的影响研究
- Study on the effects of changing meteorology conditions and emissions on the interannual variation of ozone concentration in Jiangsu Province from 2015 to 2019
- 基金项目:国家自然科学基金(No.41922052);江苏省PM2.5与臭氧污染协同控制重大专项(No.2019023)
- 徐紫碟
- 南京大学环境学院,南京大学污染控制与资源化研究国家重点实验室,南京 210023
- 顾晨
- 南京大学环境学院,南京大学污染控制与资源化研究国家重点实验室,南京 210023
- 朱文琳
- 南京大学环境学院,南京大学污染控制与资源化研究国家重点实验室,南京 210023
- 张磊
- 南京大学环境学院,南京大学污染控制与资源化研究国家重点实验室,南京 210023
- 赵瑜
- 南京大学环境学院,南京大学污染控制与资源化研究国家重点实验室,南京 210023
- 摘要:使用精细化江苏省大气污染物排放清单和化学传输模式(WRF-CMAQ)模拟2015—2019年全省臭氧(O3)的时空分布和变化特征;基于不同模拟情景下O3浓度年际变化指标(MAD、APDM和增长速率等)量化气象条件和排放变化对江苏省O3浓度年际变化的贡献;采用空间相关性分析法初步确定影响O3浓度变化的具体气象参数.结果表明:2015—2019年,江苏省O3浓度逐年增高,呈春夏高、秋冬低,南部低、沿海高的时空分布特征.气象因素对江苏省O3浓度变化的贡献为58%,排放贡献为36%;其中,苏南地区受排放的影响(35%)高于气象影响(30%),而苏中、苏北地区主要受气象因素影响.江苏省在春季、夏季和秋季的O3浓度年际变化主要受气象因素影响;冬季时,排放因素的影响略高于气象因素.温度和边界层高度是影响江苏省O3浓度年际变化的重要气象参数.
- Abstract:We applied the refined provincial emission inventory of air pollutants and a chemistry transport model (WRF-CMAQ) to estimate the spatiotemporal change of surface ozone (O3) concentration for Jiangsu Province during 2015—2019. We calculated statistical indicators of interannual variation (MAD, APDM, and growth rate) for O3 concentration based on different simulation scenarios and evaluate the contributions of meteorological condition and emission variation to the changing O3. Spatial correlation analysis was further conducted to identify the meteorological parameters that are influential on O3 variation. The O3 concentration in Jiangsu has been increasing, with higher level in spring and summer and lower in autumn and winter. Relatively low concentration was found in southern Jiangsu and high in the coast areas of the Province. The contributions of meteorological and emission factors to the changing O3 concentration were estimated at 58% and 36% for Jiangsu. Southern Jiangsu was more affected by emissions (35%) than meteorology (30%), while central and northern Jiangsu were mainly affected by meteorological factors. In spring, summer and autumn, the interannual variation of O3 concentration in Jiangsu was mainly affected by meteorological factors, while the influence of emissions was higher in winter. Temperature and planet-boundary-layer height were important meteorological parameters that affected the interannual variation of O3.