MERRA-2 instU_2d_gas_Nx: 2d,diurnal,Instantaneous,Single-Level,Assimilation,Aerosol Optical Depth Analysis 0.625 x 0.5 degree V5.12.4 (M2IUNXGAS) at GES DISC
M2IUNXGAS (or  instU_3d_gas_Nx) is an instantaneous 2-dimensional monthly diurnal means data collection in Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2).  This collection consists of assimilation of aerosol optical depth analysis and aerosol optical depth analysis increment.  It …