Raw plastic counts and calculated plastic deposition rates for 11 National Atmospheric Deposition Program (NADP) sites in the western USA recorded from 2017-2019. Samples were collected to determine plastic deposition rates in remote locations and identify the potential sources of plastic to the atm

This data set is created and updated yearly based on scientist, researcher, and student GPS mapping throughout the year. All of the current research sites from each summer are combined as polygons in one feature layer. This dataset is for public use and does not contain any private researcher name o