Abstract
Numerical simulations were performed in order to evaluate the impact of the direct effect of aerosol particles on meteorology and air quality over East Asia. The online coupled Weather Research and Forecasting-Community Multiscale Air Quality (WRF-CMAQ) modeling system was applied from January to March 2014 for cases with/without feedback: two-way/one-way simulations. Ground-level shortwave radiation and PM2.5 concentration in the two-way simulation were respectively smaller and higher than those in the one-way simulation over the Asian Continent, particularly in China with remarkably high PM2.5 concentration. These differences indicate that the aerosol direct effect substantially influence the atmospheric stability, and therefore the dispersion efficiency of air pollutants.
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