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) tavgM_2d_chm_Nx: 2-dimensional, Monthly mean, Time-Averaged, Single-Level, Assimilation, Carbon Monoxide and Ozone Diagnostics (M2TMNXCHM), Version 5.12.4

A monthly time-averaged 2-dimensional data collection of atmospheric carbon monoxide and ozone parameters is presented in the Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2). It provides global model and data assimilation results that incorporate satellite-based observations to predict monthly carbon monoxide and ozone parameters, such as properties of carbon monoxide (column burden, emission, chemical production, and surface concentration), and total column ozone.