The present study is focused on validation of the recent SC1AMACHY nadir level 2 data by means of comparisons with correlative ground-based measurements over Russia and Western Europe in 2004. The newly available validation dataset, based on the SC1AMACHY level 2 off-line processor version 3.00 (OL 3.00), was compared with the measurements of 14 Russian UV filter ozonometers M-124 and 3 French SAOZ UV-visible zenith-sky spectrometers. According to the results, the new SCIAMACHY dataset, OL 3.00, demonstrate better agreement with ground-based M-124 ozone measurements. In addition, our ground-based validation datasets were compared with correlative measurements of ERS-2 GOME, AURA OMI and SCIAMACHY stratospheric NO₂ column (scientific product, University of Bremen).