Supporting files for Confer et al. (2022) "Impact of changing Arctic sea ice extent, sea ice age, and snow depth on sea salt aerosol from blowing snow and the open ocean for 1980-2017" 1. Monthly sea salt aerosols (SSA) emissions for 1980-2017 calculated with the Harmonized Emission Component (HEMCO) driven by MERRA-2 meteorological fields at 0.5 degrees latitude by 0.625 degrees longitude. Each file contains emissions for SALA (submicron SSA, rdry=0.01-0.5 micrometers) and SALC (supermicron SSA, rdry=0.5-8 micrometers). Emissions are in units of kg/m2/s. SSA.Emissions.OO.1980-2017.nc : monthly mean SSA emissions from the open ocean (OO) SSA.Emissions.MYI.1980-2017.nc: monthly mean SSA emissions from blowing snow on multi year ice (MYI), with salinity=0.035 psu SSA.Emissions.FYI.1980-2017.nc: monthly mean SSA emissions from blowing snow on first year ice (FYI), with salinity=0.1 psu SSA.Emissions.varFYI.1980-2017.nc: monthly mean SSA emissions from blowing snow on first year ice (FYI), with variable salinity as a function of snow depth. 2. Monthly mean surface mass mixing ratios of SSA for 1980-2017 simulated with the GEOS-Chem model at a resolution of 2 degrees latitude by 2.5 degrees longitude. Each file contains mixing ratios for SpeciesConc_SALA (submicron SSA) and SpeciesConc_SALC (supermicron SSA) Units are in v/v. SSA.Surface.Concentrations.OO.1980-2017.nc4 : monthly mean SSA mass concentrations due to open ocean (OO) emissions only SSA.Surface.Concentrations.MYI.1980-2017.nc4 : monthly mean SSA mass concentrations due to blowing snow emissions on MYI only SSA.Surface.Concentrations.FYI.1980-2017.nc4 : monthly mean SSA mass concentrations due to blowing snow emissions on FYI only SSA.Surface.Concentrations.varFYI.1980-2017.nc4: monthly mean SSA mass concentrations due to blowing snow on FYI only, with variable salinity as a funciton of snow depth. For more information, please see paper by Confer et al. (2022) or contact Lyatt Jaegle (jaegle@uw.edu)