The Community Multi-scale Air Quality (CMAQ) modeling system is used to investigate the response of atmospheric visibility to the emission reduction from different sectors, i.e. industries, traffic and power plants. Visibility improvement from exclusive reduction of NOx or VOC emission was most inefficient. Sulfate and organic aerosol would rebound if NOx emission was exclusively reduced from any emission sector. The most efficient way to improve the atmospheric visibility was proven to be the multi-pollutant control strategies. Simultaneous emission reductions (20 - 50%) on NOx, VOC and PM from the industrial and mobile sectors could result in 0.3 - 1.0 km visibility improvement. The multi-pollutant control strategy on both NOx (85%) and SO2 (90%) emission from power plants was the most efficient among all the scenarios with visibility improvement up to 4.0 km. The seasonal visibility improvement subject to emission controls was higher in summer while lower in the other seasons.
Revised: December 17, 2013 |
Published: January 1, 2014
Citation
Huang K., J.S. Fu, Y. Gao, X. Dong, G. Zhuang, and Y. Lin. 2014.Role of Sectoral and Multi-pollutant Emission Control Strategies in Improving Atmospheric Visibility in the Yangtze River Delta, China.Environmental Pollution 184.PNNL-SA-98272.doi:10.1016/j.envpol.2013.09.029