Abstract
The aim of this research was to investigate an alternative approach to link widely used air quality tools. The thesis describes the development of a new, flexible framework, which is efficient and requires minimal system requirements. The framework was implemented through the prototype software IMPAQT (Integrated Modular Program for Air Quality Tools). The main objective of IMPAQT was to aid transport/environmental planners by increasing the efficiency of air quality assessments. IMPAQT facilitates and automates the generally time-consuming and labour intensive procedures. IMPAQT is a modular system and was developed with no knowledge of the underlying codes of the air quality tools used. This means that IMPAQT is compatible with and has the flexibility to incorporate different air quality tools and models. IMPAQT was further developed to include two new tools. First, to check for population exposure to various pollutants and second, to test the air quality impact of alternative traffic scenarios. Both tools could run independently or in combination with the rest of the interface modules within IMPAQT. IMPAQT was tested through a series of parametric studies to verify its functionality and to check the validity of the results. It was then applied to several case studies using a transport model, a dispersion model and a GIS. IMPAQT was used to compare predicted results with available monitoring data. It was also used carry out air quality assessments and to test traffic scenarios. These were completed efficiently and in a shorter time compared to the methodology currently adopted by local authorities. Finally, some ideas to further enhance IMPAQT were presented. This included the integration of other air quality tools, further analysis of the results, the addition of new traffic scenarios and dissemination of the results to the public via web-based applications. Air quality assessment is a long-term government objective. The work undertaken in this thesis has demonstrated that there is a need for a flexible framework such as IMPAQT. Furthermore, there are many applications in which IMPAQT can be used to assist with both current and future air quality assessments.