Vertical profiles of global seasonal mean ozone in five distinct layers throughout the troposphere

Two datasets (and files) are provided. Both are vertical profiles of tropospheric ozone (O3) in five distinct layers in the atmosphere: one in the boundary layer (below 800 hPa), two in the middle troposphere (800-600 hPa, 600-450 hPa), and two in the upper troposphere (450-320 hPa, 320-180 hPa). The first is derived with TROPOMI satellite observations and the second simulated with the GEOS-Chem chemical transport model (CTM).The satellite-derived data are obtained by cloud-slicing TROPOMI partial columns (stratosphere + troposphere) of O3 retrieved above optically thick clouds (optical cloud fraction > 0.7) from June 2018 to May 2022 to obtain seasonal multiyear mean global gridded (1o x 1o) O3.The second dataset is GEOS-Chem O3 at the global 2o x 2.5o (latitude x longitude) resolution sampled at 12:00-15:00 local solar time (LST) to be centred at the TROPOMI overpass time (13:30 LST). The model data are also multiyear means, but for 2015-2019, due to the time-lag in availability of emission inventories of precursors of O3. NaNs in the GEOS-Chem data are high-altitude mountainous regions in the lowest layers or above the tropopause in the highest layers.Development of a cloud-slicing algorithm for application to TROPOMI using synthetic data from GEOS-Chem, evaluation of the satellite-derived data against global and regional ozonesonde networks and application of the evaluated cloud-sliced data to assess current understanding of tropospheric O3 as simulated with the GEOS-Chem model are detailed in the accompanying paper submitted for review to Wiley's Journal of Geophysical Research (JGR).