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| Titel |
FTIR retrieval of the full seasonal cycle of arctic total column CO2 and CH4 |
| VerfasserIn |
Matthias Buschmann, Nicholas Deutscher, Mathias Palm, Thorsten Warneke, Tine Weinzierl, Justus Notholt |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250096324
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| Publikation (Nr.) |
 EGU/EGU2014-11822.pdf |
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| Zusammenfassung |
| Fourier Transform InfraRed (FTIR) Spectrometry is used to measure the total column amount
of atmospheric trace gases via solar absorption spectroscopy, e.g. within the Total Carbon
Column Observing Network (TCCON). During winter in the high Arctic, the sun is
permanently below the horizon. We deployed a new near-infrared detector in our
instrument in Ny Ålesund (79°N) to increase sensitivity in low light conditions
and use the sunlight reflected by the moon as an infrared light source above the
atmosphere to perform absorption spectroscopy. At autumn equinox we are able to take
both sunlight and moonlight spectra, thus validating the new approach. Here we
present the successful retrieval of total column dry air mole fractions of CO2 and
CH4 in the 2012/2013 and 2013/2014 winters and their validation with TCCON. |
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