Source : WAM
Chinese scientists have created a new air quality model that offers more precise simulations of two key pollutants: fine particulate matter and ground-level ozone.
Called the Emission and Atmospheric Processes Integrated and Coupled Community Model (EPICC), the tool enhances the ability to analyse and manage complex air pollution issues, particularly in rapidly developing regions.
The EPICC model brings together the latest scientific understanding of major atmospheric processes. Built with a modular design, it allows for easy updates or replacement of individual components. It also features advanced chemical mechanisms, including manganese-catalysed sulfate formation and interactions between aerosols and sunlight.
Researchers involved in the project said performance evaluations show that EPICC version 1.0 markedly improves the accuracy of simulations for particulate matter smaller than 2.5 micrometres (PM2.5) and ozone. The model overcomes limitations seen in earlier systems, which often underestimated sulfate pollution and overstated ozone levels during summer.
The team noted that while many leading air quality models were developed in the United States, they are not always well adapted to China’s distinctive pollution conditions, such as coal-related emissions, photochemical smog, and heavy haze.
