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  A Study on the Collaborative Virtual
Geographic Environment (CVGE) for Simulating Air Pollution in Pearl River Delta (PRD) Region






Air pollution problem in the Pearl River Delta (PRD) region, caused by the fast increasing industrial development, has become the top environmental issue of Hong Kong and other major cities. Air pollution is not a local problem and never stop at regional boundaries. Hence, developing cooperative measures by government officers, scientists as well as general public in the region is the only possible way to tackle the problem.

Led by Prof. Lin Hui, researchers of The Chinese University of Hong Kong and the Sun Yat-sen University jointly developed the Collaborative Virtual Geographic Environment (CVGE) platform. This platform system aims to provide an interactive collaboration environment for the scientists, officers and general public carrying out joint investigations of regional air-pollution problems.

We adopted multiple-sources air pollution data integration, satellite imagery, geographic information systems and processing models, virtual reality, Wide-Area Network etc. We also integrated the platform system with atmospheric circulation model and air pollution dispersion model. The platform provides comprehensive modeling capabilities and geographic analysis for air-pollution studies. Mostly important, this is a collaborative platform for scientists, geographers, computer simulation technologists as well as general publics. The different interest groups share their knowledge, discuss, analyse and even forecast the impacts of air pollution problems simultaneously. This platform is essential to the timely, thoughtful responses to the regional environmental problems. Moreover, the three-dimensional display system helps government officers as well as public understanding air pollution transportations and dispersions simulation.

Geo-collaboration on air pollution simulation and analysis

We have completed this two-year project in 2009. Our present objective is promoting the Collaborative Virtual Geographic Environment Platform to the industry. We can also further extend the platform system for specific applications such as emergency response and decision support, micro-scale air pollution control, sustainable urban development as well as public health assurance.

Prof. Lin Hui
Institute of Space and
Earth Information Science
The Chinese University of Hong Kong








The simulation of dynamic air pollution over the PRD region