Transport of air pollutants in the atmosphere causes transboundary air pollution under some specific meteorological conditions. In addition to China, which is the major contributor of transboundary air pollution to the air quality in Taiwan, air pollutant emissions from other countries in East Asia would affect the air quality in Taiwan as well. Accordingly, the major tasks of this project include (1) analyzing the air quality data and the laws, regulations and strategies conducted to control air pollution in the neighboring countries including China, Japan and Republic of Korea (Korea); (2) analyzing the effect of transboundary air pollution on the air quality in Taiwan; and (3) holding a conference in the field of air quality improvement to promote the cross-Straits communication and cooperation. At the moment of finishing this final report, the air quality standards and monitoring data, and the air pollution control laws, regulations and strategies conducted in China, Japan and Korea have been collected and analyzed. Moreover, the emission data of the neighboring countries including China, Japan and Korea have been collected and analyzed. CMAQ model was applied to analyze the effects of air pollutant emissions from China and Korea on the air quality in Taiwan and the effect of COVID-19 Pandemic on the air quality in Taiwan as well. In addition, changes in desertification in China and Mongolia have been analyzed by comparing the satellite remote sensing data of 2000 and 2020. Take the COVID-19 Pandemic into consideration, the relevant works of the planned conference has been deleted with the approval of EPA.

Changing Trends of Air Quality, 14th Five Year Plan, Air Pollution Control Act, Clean Air Conservation Act, Fine Particulate Matter (PM2.5) and Ozone (O3) Control Measures, Transboundary Air Pollution, Air Quality Modelling, Desertification, Satellite Remote Sensing Data