Ten Years of SO2 measurements from GOME and SCIAMACHY
Andreas Richter(1), Folkard Wittrock(1) and John P. Burrows(1)
(1) University of Bremen, Otto-Hahn-Allee 1, D-28359 Bremen, Germany
Sulphur dioxide (SO2) is an important atmospheric pollutant. It is emitted from volcanoes, both during degassing and through eruptions, and also from anthropogenic activities such as coal burning, from refineries of oil and gas and nonferrous smelting. In the atmosphere, high concentrations of SO2 not only adversely affect human health but also contribute to acid rain and the resulting damage to the ecosystem. In addition, SO2 is closely linked to aerosol formation via sulphuric acid (H2SO4) with links to CCN formation, cloud droplet size and feedback mechanisms in climate forcing as well as heterogeneous chemistry.
In this study, one decade of SO2 measurements from the two satellite instruments GOME (Global Ozone Monitoring Experiment) and SCIAMACHY (SCanning Imaging Absorption spectroMeter of Atmospheric CHartographY) is presented. The data is analysed for volcanic and anthropogenic emissions, and the spatial, seasonal and inter-annual variability is studied. One particular focus is on the accuracy of the products and the potential to use different retrieval windows to obtain vertically resolved information.
Keywords: ESA European
Space Agency - Agence spatiale europeenne,
observation de la terre, earth observation,
satellite remote sensing,
teledetection, geophysique, altimetrie, radar,
chimique atmospherique, geophysics, altimetry, radar,