C3S: Obs4MIPs format GOME-type Total Ozone Essential Climate Variable (GTO-ECV), Version 9.0

This dataset contains a time series of monthly averaged total ozone column data from nadir-viewing satellite sensors in Obs4MIPs format. It has been reformated from Version 9 of the GOME-type Total Ozone Essential Climate Variable (GTO-ECV) product, that has been generated as part of the European Union Copernicus Climate Change Service (C3S) ozone project. GTO-ECV is generated by combining measurements from several nadir-viewing satellite sensors (GOME/ERS-2, SCIAMACHY/Envisat, OMI/Aura, GOME-2/MetOp-A, GOME-2/MetOp-B, TROPOMI/Sentinel-5P, and GOME-2/MetOp-C) into one single cohesive record. The merging approach was developed in the framework of the European Space Agency’s Climate Change Initiative (ESA-CCI) ozone project.