Ho Chi Minh City Environmental Improvement Project. Air Quality Monitoring Component. The air quality monitoring and management system for HCMC, Vietnam.

Abstract

The GIS based database and planning tool AirQUIS has been installed at hEPA/DONRE in HoChiMinhCity and is being used for air quality monitoring and management. The data collected through the automatic monitoring and telemetric network is being quality controlled and transferred for storage in the AirQUIS databases. Statistical programmes for quality control and data presentations are being used, and an automatic air quality index (AQI) generator provides AQI values for traffic and for urban background microenvironments to be displayed on the information web site. Air pollution dispersion models have also been installed as part of AirQUIS for HCMC. Templates and routines for emission inventories are presently being applied to collect emission data, and the first model estimated have been presented. The main air pollution problem in HCMC is suspended particles, and PM10 concentrations are frequently exceeding limit values. Also high ozone concentrations have been observed on dry hot days exceeding international standards and limit values.