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| Titel |
Retrieval of sulphur dioxide from the infrared atmospheric sounding interferometer (IASI) |
| VerfasserIn |
L. Clarisse, D. Hurtmans, C. Clerbaux, J. Hadji-Lazaro, Y. Ngadi, 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 ; 5, no. 3 ; Nr. 5, no. 3 (2012-03-13), S.581-594 |
| Datensatznummer |
250002631
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| Publikation (Nr.) |
 copernicus.org/amt-5-581-2012.pdf |
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| Zusammenfassung |
| Thermal infrared sounding of sulphur dioxide (SO2) from space has gained
appreciation as a valuable complement to ultraviolet sounding. There are
several strong absorption bands of SO2 in the infrared, and atmospheric
sounders, such as AIRS (Atmospheric Infrared Sounder), TES (Tropospheric
Emission Spectrometer) and IASI (Infrared Atmospheric Sounding
Interferometer) have the ability to globally monitor SO2 abundances. Most
of the observed SO2 is found in volcanic plumes. In this paper we outline
a novel algorithm for the sounding of SO2 above ~5 km altitude using
high resolution infrared sounders and apply it to measurements of IASI. The
main features of the algorithm are a wide applicable total column range (over
4 orders of magnitude, from 0.5 to 5000 dobson units), a low theoretical
uncertainty (3–5%) and near real time applicability. We make an error
analysis and demonstrate the algorithm on the recent eruptions of Sarychev,
Kasatochi, Grimsvötn, Puyehue-Cordón Caulle and Nabro. |
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