Advanced Search
SONG Yating, TANG Xiao, KONG Lei, et al. 2023. Improvement of the Summer Ozone Simulation over Key Cite-Clusters in China through Emission Inversion Method [J]. Climatic and Environmental Research (in Chinese), 28 (1): 61−73. doi: 10.3878/j.issn.1006-9585.2022.21199
Citation: SONG Yating, TANG Xiao, KONG Lei, et al. 2023. Improvement of the Summer Ozone Simulation over Key Cite-Clusters in China through Emission Inversion Method [J]. Climatic and Environmental Research (in Chinese), 28 (1): 61−73. doi: 10.3878/j.issn.1006-9585.2022.21199

Improvement of the Summer Ozone Simulation over Key Cite-Clusters in China through Emission Inversion Method

  • Based on the Nested Grid Air Quality Prediction Model System (NAQPMS), the emission source inversion method is utilized to optimize the estimation of ozone (O3) precursor in the emission a priori inventory dominated by China Multi-Scale Emission Inventory (MEIC). From June to August 2019, the effect of improving O3 simulation by employing source inversion emission inventory is mostly examined in “2+26” Cities, Yangtze River Delta, Pearl River Delta, and Chengdu−Chongqing urban agglomerations with severe O3 pollution from June to August 2019 (summer). The evaluation results show that the nitrogen oxide (NOx) emission rate obtained by source inversion is lower than the a priori inventory emission rate of about 0.6 μg m−2 s−1, but the volatile organic compounds (VOCs) emission rate of inversion is higher than the a priori inventory emission rate of about 0.5 μg m−2 s−1 in “2+26” cities. The source inversion emission inventory is used to simulate O3 in four urban agglomerations, and the simulated performance of O3 in summer could be significantly improved by inversion emission data, which reduces the root-mean-square error (RMSE) of the maximum eight-hour mean of O3 (MDA8-O3) from 40–60 μg/m³ to 20–30 μg/m³ and increases the correlation coefficient from 0.6–0.7 to more than 0.8. The discrepancy between the simulated and observed diurnal variation peaks of O3 narrowed from 2–50 μg/m³ to 2–20 μg/m³. The results of this study show that pollution source inversion based on ground observation data may effectively improve the performance of O3 simulation in the key urban agglomeration, and the difference between the emissions of O3 precursor inversion emissions and the a priori inventory may provide a reference for the effectiveness and evaluation of the a priori inventory.
  • loading

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return