Janice Brahney janice.brahney@usu.edu https://orcid.org/0000-0001-7614-2855 NSF, UAES fundingOrganization 2020-06-12 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 atmosphere. Samples were collected using an Aerochem Metrics Wet and Dry sampler. Wet deposition refers to the material retained on a 0.45-micron filter. Dry deposition refers to the dry only deposition collected using a Dry Side Insert (DSI) (Brahney et al. 2020). Plastics are identified as either fibers or particles (includes small colored films). Wet deposition rates are recorded weekly and dry plastic deposition rates are based on monthly sampling intervals. Sites included are Grand Canyon National Park (AZ03), Joshua Tree National Park (CA67), Rocky Mountain National Park (CO98), Niwot Ridge (CO02), Ashley National Forest (UT95), East River SFA (CO10)), Craters of the Moon National Park (ID03), Great Basin National Park (NV05), Canyonlands National Park (UT09), Bryce Canyon Nationa Park (UT99), and Wind River Range (WY06). Data collection is being published in collaboration with the Department of Energy's research project, "Constraining physical understanding of aerosol loading, biogeochemistry, and snowmelt hydrology from hillslope to watershed scale in the East River Scientific Focus Areas. EARTH SCIENCE > ATMOSPHERE CATEGORICAL:NONE EARTH SCIENCE > ATMOSPHERE > AEROSOLS EARTH SCIENCE > ATMOSPHERE > AIR QUALITY EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY EARTH SCIENCE > ATMOSPHERE > PRECIPITATION EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION CATEGORICAL:GCMD EARTH SCIENCE > ATMOSPHERE VARIABLE:NONE EARTH SCIENCE > ATMOSPHERE > AEROSOLS > DUST/ASH/SMOKE EARTH SCIENCE > ATMOSPHERE > AEROSOLS > PARTICULATE MATTER VARIABLE:GCMD

Brahney, J., Hallerud, M., Heim, E., Hahnenberger, M., & Sukumaran, S. (2020). Plastic rain in protected areas of the United States. Science, 368(6496), 1257-1260. DOI: 10.1126/science.aaz5819

This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. Wind River Range, WY -109.7875 -109.7875 42.929 42.929 Grand Canyon NP, AZ -112.184 -112.184 36.0586 36.0586 Crater of the Mood NP, ID -113.5551 -113.5551 43.4605 43.4605 Rocky Mountain NP, CO -105.6628 -105.6628 40.2878 40.2878 Joshua Tree NP, Ca -116.3889 -116.3889 34.0695 34.0695 Unita NF, UT -109.4671 -109.4671 40.7543 40.7543 Canyonlands NP, UT -109.821 -109.821 38.4584 38.4584 Indian Peaks NP, CO -105.5891 -105.5891 40.0547 40.0547 East River, CO -106.986 -106.986 38.9561 38.9561 Great Basin NP, NV -114.217 -114.217 39.0054 39.0054 Bryce Canyon NP, UT -112.1728 -112.1728 37.6186 37.6186 2017-09-01 2019-12-31 Janice Brahney Utah State University Watershed Sciences janice.brahney@usu.edu https://orcid.org/0000-0001-7614-2855 CONSTRAINING PHYSICAL UNDERSTANDING OF AEROSOL LOADING, BIOGEOCHEMISTRY, AND SNOWMELT HYDROLOGY FROM HILLSLOPE TO WATERSHED SCALE IN THE EAST RIVER SCIENTIFIC FOCUS AREA Samples were collected at National Atmospheric Deposition Program sites using an Aerochem Metrics wet and dry sampler. The dry bucket contained a Dry Side Insert "Brahney Bucket" to capture dry deposited plastics. Wet deposition was filtered at the Central Analytical laboratory in Wisconsin and filters shipped to Utah State University for plastic processing. Dry samples were processed at Utah State University. Samples were collected from the glass base of the DSI using a ceramic razor blade into a pre-weighed container. Subsamples were counted and analyzed for plastic concentration and polymer composition. Data in the associated files are reported by deposition rate, calculated based on the sample area and the duration of sample acquisition. Dry and wet deposition rates are recorded as is, while the total deposition rates are corrected based on the blank determination. Note: only fibers were reported in lab, field, and process blanks. S. McKenzie Skiles University of Utah, Salt Lake City, UT m.skiles@geog.utah.edu Principal Investigator S2_DryDep2.csv application/vnd.ms-excel S1_WetDep2.csv application/vnd.ms-excel S4_WetDryCounts.xlsx application/vnd.openxmlformats-officedocument.spreadsheetml.sheet