US National Aeronautics and Space Administration (NASA) Global Modeling and Assimilation Office (GMAO) Modern-Era Retrospective analysis for Research and Applications Version 2 (MERRA-2) tavg1_2d_aer_Nx: 2-dimensional, 1-Hourly, Time-averaged, Single-Level, Assimilation, Aerosol Diagnostics (M2T1NXAER), Version 5.12.4

An hourly time-averaged 2-dimensional data collection of atmospheric aerosol parameters is provided in the Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2). Global model and data assimilations that incorporate satellite-based observations are used to predict hourly aerosol parameters that include column mass density and surface-level mass concentrations of aerosol components, and total extinction (and scattering) aerosol optical thickness, at 550 nm.