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| Titel |
GOME-2 satellite observations of NOx emissions from ships |
| VerfasserIn |
Andreas Richter, Andreas Hilboll, Achim Zien, John P. Burrows |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250043085
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| Zusammenfassung |
| 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 the 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.
As result of the lack of legislation on shipping emissions, in particular in international
waters, in combination with substantial emission reductions for many land based sources, the
relative importance of pollution from ships is increasing. 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 interesting 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. |
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