Re ECF Project: ECF 2015-21

Project Title: Quantifying the regional and local contributions to particulate concentrations in deep street canyons

Applicant: Dr Keith NGAN, City University of Hong Kong

Total Approved Grant: $355,656 (ECF & WWGF: 50/50)

Duration: 1/4/2016 to 31/3/2018

Project Status/Remarks: On-going

The primary purpose of this project is to obtain improved estimates of the relative importance of relative and local contributions to PM2.5 and black carbon in Hong Kong. Regional contributions to Hong Kong's air quality have been analyzed using winds from global and mesoscale atmospheric models. This project will answer key questions related to the influence of local effects on Hong Kong air quality inside deep street canyons. (1) Is the roadside concentration of particulates controlled by local or regional sources? (2) Does the behavior at the ground or near the level change qualitatively for a sufficiently strong pollutant source? (3) Given realistic sources and building geometry, at what height is there a crossover from regional to local control or vice versa.

Summary of the Findings/Outcomes:
To be available upon completion of the project