MERRA-2 const_2d_ctm_Nx: Constant Model Parameters for Usage by CTM 0.625 x 0.5 degree V5.12.4 (M2C0NXCTM) at GES DISC
M2C0NXCTM (or const_2d_ctm_Nx) is a data collection in Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2).  This collection consists of 2-dimensional constant model parameters for usage by the chemistry transport model (CTM), such as the fraction of lake, land, ice, or ocean within a …