| The air quality early warning and action system in Yangtze River Delta was developed to guarantee air quality during the World Expo 2010 Shanghai China. The system was composed of four subsystems including sharing, regional air quality data air quality forecast and early warning, information publication as well as emergency action. The key functions, including automatic QC check, multi model ensemble air quality forecast system, fire point decision of straw burning, research for early warning action mechanism and GIS automatic express, had been introduced. During Shanghai Expo, the system had monitored the real time air quality in Yangtze River Delta and forecasted the changes of air quality in the next several days scientifically. Five times of successful forecasting and actions on pollution days effectively reduced the pollution level during the short term within 48 hours, which provided the technical basis for air quality guarantee of Shanghai Expo. The implementation of this system also provided a useful practice to solve regional air pollution problems. |
