Measurements of hydrogen cyanide (HCN) and acetylene (C2H 2) from the Infrared Atmospheric Sounding Interferometer (IASI)

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Authors
Duflot, V.
Hurtmans, D.
Clarisse, L.
R'honi, Y.
Vigouroux, C.
De Maziere, M.
Mahieu, E.
Servais, C.
Clerbaux, C.
Coheur, P.-F.
Discipline
Earth and related Environmental sciences
Subject
acetylene
atmospheric chemistry
atmospheric modeling
atmospheric transport
biomass burning
carbon dioxide
combustion
cyanide
interferometer
trace gas
Africa
Bern [Switzerland]
Jungfraujoch
Mascarene Islands
Reunion
Switzerland
Audience
Scientific
Date
2013Metadata
Show full item recordDescription
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.
Citation
Duflot, V.; Hurtmans, D.; Clarisse, L.; R'honi, Y.; Vigouroux, C.; De Maziere, M.; Mahieu, E.; Servais, C.; Clerbaux, C.; Coheur, P.-F. (2013). Measurements of hydrogen cyanide (HCN) and acetylene (C2H 2) from the Infrared Atmospheric Sounding Interferometer (IASI). , Atmospheric Measurement Techniques, Vol. 6, Issue 4, 917-925, DOI: 10.5194/amt-6-917-2013.Identifiers
scopus: 2-s2.0-84882759273
Type
Article
Peer-Review
Yes
Language
eng