airPollutionMelbourne

This repository was set up to contain code for preparing Melbourne data inputs required for air pollution model.

Overview

There are two scripts:

• monitoring site locations.R, which assesses the distance from air quality monitoring sites to roads, finds the nearest network links (accessible by car) to the monitoring stations, and classifies the monitoring sites based on descriptions at https://uk-air.defra.gov.uk/networks/site-types.
• emission factors.R, which calculates NO2 and particulate emission factors for Victoria using data from the COPERT Australia v1.3 tool and PIARC.

monitoring site locations.R

Input files

The code requires the following input files, which are available [to authorised users] at [insert location when known]. The code assumes that the input files are located in a data directory ("../data/") which sits beside the directory in which the script files are located .

File	Content
data/processed/annual_pm_no2_vic.xlsx	Location of air quality monitoring stations
data/processed/edgesMelbourne.gpkg	Edges and nodes making up the road network
data/processed/region.sqlite	Region: the study area for the JIBE project
data/processed/region_buffer.sqlite	Region, buffered: the region, plus a buffer to limit edge effects

Output file

The code produces the following output file, which is saved to the data/processed directory.

File	Content
monitoring site locations classified.csv	Distance from monitoring site locations to roads, nearest network links (car-accessible), and site classification.

emission factors.R

Input files

The code requires the following input files, which are available [to authorised users] at [insert location when known]. The code assumes that the input files are located in a data directory ("../data/") which sits beside the directory in which the script files are located .

File	Content
data/processed/COPERT_outputs_vic.xls	Emissions for Victoria, 2010 fleet, as calculated by the COPERT Australia v1.3 tool
data/processed/COPERT_outputs_vic_supp.xlsx	Emissions for Victoria, 2010 fleet, as calculated by the COPERT Australia v1.3 tool - supplementary information extracted from the tool but not exported in the main output file
data/original/PIARC_tables_aust.xlsx	Selected tables of Australian emissions, extracted from PIARC (World Road Association) 2012, Road Tunnels: Vehicle Emission and Air Demand for Ventilation https://www.piarc.org/en/log-in.htm?path=/ressources/publications/7/16655,WEB-2012R05-EN-revise.pdf

Output file

The code produces the following output files, which are saved to the data/processed directory.

File	Content
emission factors hot.csv	Hot emission factors
emission factors cold start.csv	Cold start emission factors

Note the acknowledgement requirement for COPERT Australia, see https://copert.emisia.com/copert-australia/download/: Any published results using the tool will properly acknowledge the tool, and must display the following copyright statement: © Generated with COPERT Australia v.1.3, created and maintained by Emisia and Transport Energy/Emission Research (TER), 2025