[Transport characteristics of air pollutants over the Yangtze Delta].
Meteorological field of January, April, July and October in 2004 was obtained by running MM5 with NCEP datasets. Then we used HYSPLIT 4.8 model to calculate the backward and forward trajectories of representative cities. Distributions of trajectories and the affected areas vary with seasons. Transport current affecting Yangtze River Delta is mainly from Mongolia, North China or Northeast region, via Yellow Sea area, Shandong, Jiangsu province or Shanghai. Another important transport path is current from southwest because of the Southwest monsoon. A movement of East Asia monsoon plays an important part in the mesoscale transport of pollutants in Yangtze Delta. Winter monsoon is a main mechanism which moves the air pollutants in Yangtze Delta to South China and West Pacific ocean. Another important transport system is the subtropical anticyclone over the western Pacific Ocean which controls the east coast of our country in spring and summer. This circulation system mainly affects the inland area of our country.
Wang
Yan
Y
Innovation Base of Urban & Regional Atmospheric Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. kristen213@126.com
Chai
Fa-He
FH
Wang
Yong-Hong
YH
Liu
Ming
M
D000392:Air Movements; D000393:Air Pollutants / Q000032:analysis*; D002681:China; D003198:Computer Simulation; D004784:Environmental Monitoring; D008962:Models, Theoretical; D012621:Seasons
D000393:Air Pollutants