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| Titel |
Measurements of hydrogen cyanide (HCN) and acetylene (C2H2) from the Infrared Atmospheric Sounding Interferometer (IASI) |
| VerfasserIn |
V. Duflot, D. Hurtmans, L. Clarisse, Y. R'Honi, C. Vigouroux, M. Mazière, E. Mahieu, C. Servais, C. Clerbaux, P.-F. Coheur |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 6, no. 4 ; Nr. 6, no. 4 (2013-04-09), S.917-925 |
| Datensatznummer |
250017868
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| Publikation (Nr.) |
 copernicus.org/amt-6-917-2013.pdf |
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| Zusammenfassung |
| Hydrogen cyanide (HCN) and acetylene (C2H2) are ubiquitous
atmospheric trace gases with medium lifetime, which are frequently used as
indicators of combustion sources and as tracers for atmospheric transport
and chemistry. Because of their weak infrared absorption, overlapped by the
CO2 Q branch near 720 cm−1, nadir sounders have up to now failed to
measure these gases routinely. Taking into account CO2 line mixing, we
provide for the first time extensive measurements of HCN and C2H2
total columns at Reunion Island (21° S, 55° E) and
Jungfraujoch (46° N, 8° E) in 2009–2010 using
observations from the Infrared Atmospheric Sounding Interferometer (IASI). A
first order comparison with local ground-based Fourier transform infraRed
(FTIR) measurements has been carried out allowing tests of seasonal
consistency which is reasonably captured, except for HCN at Jungfraujoch.
The IASI data shows a greater tendency to high C2H2 values. We
also examine a nonspecific biomass burning plume over austral Africa and
show that the emission ratios with respect to CO agree with previously
reported values. |
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