Leipzig 2002 – scientific programme
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UP: Umweltphysik
UP 11: Datenauswertung und Modellierung (Atmosphäre) - Poster
UP 11.6: Poster
Monday, March 18, 2002, 16:30–18:00, Galerie 1
GOME measurements of SO2 — •Andreas Richter1, Folkard Wittrock1, Annette Ladstätter-Weißenmayer1, John P. Burrows1, and D. William Arlander2 — 1Institut für Umweltphysik, Universität Bremen, Kufsteinerstr., D-28359 Bremen — 2Norwegian Institute for Air Research, PO Box 100 , N-2007, Kjeller, Norway
Sulphur Dioxide (SO2) is an important trace species in the atmosphere, both under background conditions and in polluted areas. It is released to the troposphere mainly by fossil fuel combustion, volcanic emissions and oxidation of organic material in soils as well as biogenic emissions over the oceans (DMS, H2S).
The Global Ozone Monitoring Experiment (GOME) on ERS-2 is a UV/vis spectrometer observing earth in nadir view in the spectral range of 280 - 790 nm with a spectral resolution of 0.2 – 0.4 nm. From the GOME measurements, SO2 columns can be determined on a near global scale, providing a unique opportunity to monitor both volcanic erruptions and strong pollution events from space.
In this presentation, the retrieval of SO2 from GOME measurements is described and the achievable sensitivity as well as a number of error sources are discussed. Finally, results from case studies on volcanic erruptions and smog episodes are presented.