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Titel |
Time-series of biomass burning products from ground-based FTIR measurements at Reunion Island (21°S, 55°E) and comparisons with the CTM IMAGES |
VerfasserIn |
Corinne Vigouroux, Martine De Mazière, Bart Dils, Jean-Francois Müller, Cindy Senten, Trissevgeni Stavrakou, Gauthier Vanhaelewyn, Sophie Fally, Valentin Duflot, Jean-Luc Baray |
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 |
250035711
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Zusammenfassung |
Reunion Island (21-S, 55-E) is part of the Network for the Detection of Atmospheric
Composition Change (NDACC), a network dedicated to performing high-quality long-term
ground-based observations of atmospheric trace gases at globally distributed sites. Up to now,
only a few NDACC stations are located in the Southern Hemisphere, and particularly very
few at tropical and subtropical latitudes. Furthermore, Reunion Island is situated in the Indian
Ocean, at 2000 km from southeast Africa and at only 700 km from Madagascar. It is
therefore a good location to study the transport of biomass burning products from these
regions to Reunion Island. Ground-based Fourier transform infrared (FTIR) solar
absorption observations are sensitive to a large number of biomass burning products.
At present, we have a record of such FTIR observations at Reunion Island from
three measurement campaigns, namely in October 2002, from August to October
2004, and from May to October 2007, and from continuous observations that started
in May 2009. The measurements in 2007 and 2009-2010 allow the observation
of seasonal variability. In this work, we present retrieved time-series of several
biomass burning products such as C2H2, C2H6 and HCN. These ground-based data
are compared to the CTM IMAGES. The Lagrangian particle dispersion model
FLEXPART is used to explain the day-to-day variability of these species by the transport
pathways. |
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