GOME-2 tropical tropospheric ozone has been added to the GOME-2 atmospheric dataset.The Tropospheric ozone is retrieved from the GOME-2 total ozone columns and cloud data using the convective cloud differential (CCD) method. The tropospheric ozone column represents the integrated ozone in the lowest 10 km. Monthly averaged data between 20° South and 20° North are available from GOME-2A and GOME-2B.