V5.NA.05/V5.NA.05.02
This version is recommended for users with a North American-only focus and includes total and compositional PM₂.₅, as well as the contribution from biomass burning to PM₂.₅, for 2000-2023
We estimate ground-level fine particulate matter (PM₂.₅) total and compositional mass concentrations over North America by combining Aerosol Optical Depth (AOD) retrievals (Dark Target, Deep Blue, and MAIAC) that use observations from multiple satellite-based NASA instruments (MODIS/Terra, MODIS/Aqua, MISR/Terra, SeaWiFS/SeaStar, VIIRS/SNPP, and VIIRS/NOAA20) with the GEOS-Chem chemical transport model (http://geos-chem.org), and subsequently calibrated to regional ground-based observations of both total and compositional mass using Geographically Weighted Regression (GWR) for 2000-2023.
Reference:
van Donkelaar, A., R. V. Martin, B. Ford, C. Li, A. J. Pappin, S. Shen, and D. Zhang, North American Fine Particulate Matter Chemical Composition for 2000–2022 from Satellites, Models, and Monitors: The Changing Contribution of Wildfires., ACS ES&T Air, doi: 10.1021/acs.est.0c01764, 2024. [Link]
Scientific Datasets:
Annual and Biweekly datasets are provided in NetCDF [.nc] or a zipped ArcGIS-compatible ASCII [.asc.zip] file. Note that the unzipped ASCII files can be cumbersome. Gridded files use the WGS84 projection. Contact our Support Team (support@satpm.org) for further information.
Note that these estimates are primarily intended to aid in large-scale studies. Annual and coarse-resolution averages correspond to a simple mean of within-grid values. Gridded datasets are provided to allow users to agglomerate data as best meets their particular needs. High resolution (0.01° × 0.01°) datasets are gridded at the finest resolution of the information sources that were incorporated, but are unlikely to fully resolve PM₂.₅ gradients at the gridded resolution due to influence by information sources at coarser resolution.
Annual, monthly, and biweekly mean total PM₂.₅ [µg/m3] at 0.01° × 0.01°:
[ASCII]
[NetCDF]
Annual, monthly, and biweekly mean component PM₂.₅ [µg/m3] at 0.01° × 0.01°:
[ASCII]
[NetCDF]
The contribution of biomass burning to annual, monthly, and biweekly mean total PM₂.₅ [µg/m3] at 0.01° × 0.01°, as described in the above publication, is additionally available from:
[ASCII]
[NetCDF]
The contribution of biomass burning to annual, monthly, and biweekly mean component PM₂.₅ [µg/m3] at 0.01° × 0.01°, as described in the above publication, is additionally available from:
[ASCII]
[NetCDF]
SatPM₂.₅ data V5.NA.05/V5.NA.05.02 are licensed under CC BY 4.0