Extract PM2.5 Pixels and Convert Them to H3 Hexagons

A few months ago I had the opportunity to work with the PM2.5 data provided by the Washington University in St. Louis. The initiative comprises a collection of estimated global and regional annual and monthly satellite-derived ground-level fine particulate matter (PM2.5) gridded datasets (Shen et al., 2024), spanning the years 1998 to 2022. This collection combines Aerosol Optical Depth (AOD)…