Daily Mean Fine Particulate Matter (PM2.5) 

DATASET DESCRIPTION

The fine particulate matter (PM2.5) for Ontario is now available at a daily resolution on a full-coverage 0.01° x 0.01° gridded map, spanning from 2001 to 2023. This dataset was generated using multi-source data, including satellite observations, reanalysis data, and ground-based measures, processed through a Light Gradient-Boosting Machine (LightGBM) model. Given the limited number of ground-based stations in Ontario, two enhancements were implemented to improve the accuracy of PM2.5 estimates. First, measurement stations from surrounding regions were incorporated to provide an initial guess for PM2.5 levels in Ontario. Second, the model leveraged rich spatiotemporal information from satellite and reanalysis data, such as pixel data from the previous and following days, as well as surrounding grid cells, for further refine the estimates. The paper about the accuracy of the estimated PM2.5 data is in progress.

DATA SOURCE
Data Sources: 41.7 – 56.9N, 74.3-95.2W 
Coordinate System: GCS_WGS84 – EPSG:4326 
Spatial Resolution: 0.01° x 0.01° 
Data Preparation Date: August 2023 
Data Format: in NetCDF 
Sampling Frequency of Data: Daily 
Years Available: 2004 to 2023 
VARIABLES
  • Daily average PM2.5 concentration in micrograms per cubic meter (μg/m3)
  • Postal codes
CONTACT
  • Dataset Creator: Zang Zou 
  • Email: joey.zang@mail.utoronto.ca
  • Affiliated Organization:  Ge-iSEE Lab, University of Toronto, Ontario, Canada

Back to Data Repositories