Hannover 2010 – wissenschaftliches Programm
UP 2.19: Poster
Dienstag, 9. März 2010, 16:30–18:30, Lichthof
GOME-2 satellite observations of NOx emissions from ships — •Andreas Richter, Andreas Hilboll, Achim Zien, and John P. Burrows — Institut für Umweltphysik, Universität Bremen, Bremen
The volume of international shipping has been rapidly increasing over the last decades, and further increases are expected for the coming years. A large fraction of shipping is close to coastal areas but for intercontinental transport, shipping routes also pass through the remote oceans. As the volume of transported goods is increasing, so is the amount of shipping related pollutant emissions into the marine boundary layer.
Satellite observations of NO2 and HCHO by GOME and SCIAMACHY have been used to identify shipping emissions mainly in the Indian Ocean, where high vessel densities and low background pollution levels facilitate the detection of small signals. With the better spatial coverage of recent satellite instruments such as GOME-2 and OMI, the statistics improved and better detection limits can now be achieved.
In this study, three years of GOME-2 data of NO2 have been systematically examined for shipping signals. Compared to previous studies, additional shipping tracks could be identified in the NO2 maps. Comparison with SCIAMACHY measurements shows changes in the paths taken by the ships in the Gulf of Aden and the Indian Ocean. The observed patterns in ship emissions will be discussed with respect to reported vessel densities and GOME-2 measurement uncertainties.