Daily Mean Inhalable Particulate Matter (PM₁₀)

DATASET DESCRIPTION

The inhaled particulate matter (PM₁₀) over Ontario is now available at a daily resolution, with a full-coverage 0.01° x 0.01° gridded map, spanning from 2001 to 2023. This PM₁₀ dataset was generated using a combination of multi-source satellite data, reanalysis, and ground-based measurements, modeled with a Light Gradient-Boosting Machine (LightGBM) model. Given the limited number of ground-based stations in Ontario, which constrains modeling accuracy, two key improvements were made to enhance the precision of the PM₁₀ estimates. First, PM₁₀ measurements from surrounding areas were used to provide an “initial guess” for PM₁₀ levels in Ontario. Second, the data leveraged rich spatiotemporal information, incorporating data from adjacent grids and previous or following days, sourced from grid-based satellite and reanalysis data. The paper about the accuracy of the estimated PM₁₀ 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 PM₁₀ 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

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