2019 CSCE Annual Conference - Laval (Greater Montreal) Conference
Dr. Chunjiang An, Concordia University
There is an increasing concern for earth temperature rise caused by anthropogenic perturbation. The rising greenhouse gas (GHG) emission results in the change of radiative pattern in the atmosphere, which would increase the average surface temperature and eventually lead to the change global climate. GHGs can be produced from a broad range of anthropogenic activities at different spatial and temporal scales. In particular, emission from an urban area is an import source of GHGs. A city is a complicated system consisting of various component and processes. Efforts have been made to reduce the urban GHG emission. However, there is a lack of available methods for effective assessment of such emissions. Many urban sources and factors which can influence the emissions are still unknown. Therefore, there is an urgent need to determine the urban GHG sources and evaluate the emission in a comprehensive manner.
In the present study, the GHG emission from municipal activities was assessed. A model for the assessment of urban GHG emission was developed. Based on the collected data, a case study was conducted to evaluate the urban GHG emission. The comprehensive assessment included the emission from transportation (i.e. public, personal and port), electricity consumption, natural gas, waste disposal, and wastewater treatment. There was a variation for GHG emission from these sectors in different years. To better understand the emission patterns, the relation among different factors was also investigated. The sensitivity analysis was conducted to determine the significant factors. In addition, many urban GHG emission reduction approaches were proposed. The emission results were compared with some results from other studies. This study provided a new approach for the comprehensive evaluation of urban GHG emissions. The results can help better understand the emission process and identify the major emission sources. The strategy for GHGs reduction can be further proposed based on the findings from this study.