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Maps & Charts

Explore CASTNET’s maps of ambient air concentrations, dry, wet, and total deposition.

Ambient Air Concentrations Annual average ambient air concentrations of particles and gas measured at CASTNET sites. Ambient air concentrations example thumbnail
Dry Deposition Annual average dry deposition estimated with the TDep Measurement Model Fusion method using the measured air concentrations from CASTNET and modeled CMAQ deposition velocities and fluxes.  Dry deposition example thumbnail
Wet Deposition Annual average wet deposition estimated with the TDep Measurement Model Fusion method using the concentrations in precipitation and precipitation amounts measured by NADP/NTN and the modeled precipitation amounts estimated by the PRISM model.  Wet deposition example thumbnail
Total Deposition Annual average total deposition estimated with the TDep Measurement Model Fusion method that combine the dry deposition and wet deposition grids.  Total deposition example thumbnail

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Last updated on May 7, 2025
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