Ground-based and Satellite Measurements of Stratospheric Nitrogen Dioxide and Ozone over the South of Portugal

Thanks to the new satellite technology, global scenes of the dynamical and chemical processes of the atmospheric compounds can be drawn. Ground-based equipments have to be used for comparison/validation of the satellite retrievals. The SPATRAM (SPectrometer for Atmospheric TRacers and Aerosol Measurement) is a UV-Vis spectrometer allowing for the measurements of spectral sky radiance along the zenith direction, in its standard configuration. Here, the results obtained with DOAS (Differential Optical Absorption Spectroscopy) methodology applied to the data of diffused zenith sky radiation obtained with the SPATRAM spectrometer, for the South of Portugal, and comparisons with data obtained from satellite borne instruments (GOME Global Ozone Monitoring Experiment, OMI – Ozone Monitoring Instrument, TOMS Total Ozone Mapping Spectrometer and SCIAMACHY Scanning Imaging Absorption Spectrometer for Atmospheric CHartographY) for Nitrogen Dioxide and Ozone total column are presented.