Effectiveness of Inter-Regional Collaborative Emission Reduction for Ozone Mitigation under Local-Dominated and Transport-Affected Synoptic Patterns
Environmental science and pollution research international（2024）
China University of Geosciences
Abstract
In recent years, the concentrations of ozone and the pollution days with ozone as the primary pollutant have been increasing year by year. The sources of regional ozone mainly depend on local photochemical formation and transboundary transport. The latter is influenced by different weather circulations. How to effectively reduce the inter-regional emission to control ozone pollution under different atmospheric circulation is rarely reported. In this study, we classify the atmospheric circulation of ozone pollution days from 2014 to 2019 over Central China based on the Lamb–Jenkinson method and the global analysis data of the fifth-generation European Centre for Medium-Range Weather Forecasts (ECMWF) Reanalysis (ERA5) operation. The effectiveness of emission control to alleviate ozone pollution under different atmospheric circulation is simulated by the WRF-Chem model. Among the 26 types of circulation patterns, 9 types of pollution days account for 79.5
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Key words
Ozone pollution,Lamb–Jenkinson circulation typing,WRF-Chem simulation,Emission reduction
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