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. |  |
| 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. |  |
| 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. |  |
| Total Deposition | Annual average total deposition estimated with the TDep Measurement Model Fusion method that combine the dry deposition and wet deposition grids. |  |