Infrared Absorption Cross Sections of ClOOCl - Laboratory Work and Application in MIPAS-B Measurements
Chlorine peroxide, ClOOCl, is involved in the ozone depletion cycle in polar perturbed chemistry (e.g. antarctic ozone hole). Despite the importance there has been no direct detection of this molecule in the atmosphere due to the missing spectroscopic database and rather weak atmospheric infrared sp...
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ftdlr:oai:elib.dlr.de:66169 2024-05-19T07:30:17+00:00 Infrared Absorption Cross Sections of ClOOCl - Laboratory Work and Application in MIPAS-B Measurements Birk, M. Wagner, G. Oelhaf, H. Wetzel, G. 2010-06 application/pdf https://elib.dlr.de/66169/ https://elib.dlr.de/66169/1/HITRAN_2010_v2.pdf en eng https://elib.dlr.de/66169/1/HITRAN_2010_v2.pdf Birk, M. und Wagner, G. und Oelhaf, H. und Wetzel, G. (2010) Infrared Absorption Cross Sections of ClOOCl - Laboratory Work and Application in MIPAS-B Measurements. The 11th HITRAN Database Conference, 2010-06-16 - 2010-06-18, Cambridge, MA, USA. Experimentelle Verfahren Konferenzbeitrag NonPeerReviewed 2010 ftdlr 2024-04-25T00:18:12Z Chlorine peroxide, ClOOCl, is involved in the ozone depletion cycle in polar perturbed chemistry (e.g. antarctic ozone hole). Despite the importance there has been no direct detection of this molecule in the atmosphere due to the missing spectroscopic database and rather weak atmospheric infrared spectra. The first part of the present paper will report on work on mid infrared absorption cross sections of ClOOCl already done in 2000. ClOOCl was produced in a flow reaction of Cl and Cl2O via ClO self reaction below 260 K. Number densities were derived from far infrared measurements utilizing intensities of pure rotational transitions. Measurements were carried out with a high resolution Bruker IFS120HR Fourier-transform spectrometer. A coolable 80 m absorption path multireflexion cell was applied for the subsequent FIR/MIR measurements. Although high resolution structure was partly resolved due to the high complexity (heavy molecule, four isotopologues, internal rotation) absorption cross sections at two different temperatures and total pressures were measured and supplied as spectroscopic database. The second part will show the first direct atmospheric observations of ClOOCl from MIPAS-B (Michelson Interferometer for Passive Atmospheric Sounding) balloon-based measurements from Kiruna (Sweden) on 11 January 2001 and 20/21 March 2003 with nighttime values of nearly 1.1 ppbv at 20 km. Conference Object Antarc* Antarctic Kiruna German Aerospace Center: elib - DLR electronic library |
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Experimentelle Verfahren |
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Experimentelle Verfahren Birk, M. Wagner, G. Oelhaf, H. Wetzel, G. Infrared Absorption Cross Sections of ClOOCl - Laboratory Work and Application in MIPAS-B Measurements |
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Experimentelle Verfahren |
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Chlorine peroxide, ClOOCl, is involved in the ozone depletion cycle in polar perturbed chemistry (e.g. antarctic ozone hole). Despite the importance there has been no direct detection of this molecule in the atmosphere due to the missing spectroscopic database and rather weak atmospheric infrared spectra. The first part of the present paper will report on work on mid infrared absorption cross sections of ClOOCl already done in 2000. ClOOCl was produced in a flow reaction of Cl and Cl2O via ClO self reaction below 260 K. Number densities were derived from far infrared measurements utilizing intensities of pure rotational transitions. Measurements were carried out with a high resolution Bruker IFS120HR Fourier-transform spectrometer. A coolable 80 m absorption path multireflexion cell was applied for the subsequent FIR/MIR measurements. Although high resolution structure was partly resolved due to the high complexity (heavy molecule, four isotopologues, internal rotation) absorption cross sections at two different temperatures and total pressures were measured and supplied as spectroscopic database. The second part will show the first direct atmospheric observations of ClOOCl from MIPAS-B (Michelson Interferometer for Passive Atmospheric Sounding) balloon-based measurements from Kiruna (Sweden) on 11 January 2001 and 20/21 March 2003 with nighttime values of nearly 1.1 ppbv at 20 km. |
format |
Conference Object |
author |
Birk, M. Wagner, G. Oelhaf, H. Wetzel, G. |
author_facet |
Birk, M. Wagner, G. Oelhaf, H. Wetzel, G. |
author_sort |
Birk, M. |
title |
Infrared Absorption Cross Sections of ClOOCl - Laboratory Work and Application in MIPAS-B Measurements |
title_short |
Infrared Absorption Cross Sections of ClOOCl - Laboratory Work and Application in MIPAS-B Measurements |
title_full |
Infrared Absorption Cross Sections of ClOOCl - Laboratory Work and Application in MIPAS-B Measurements |
title_fullStr |
Infrared Absorption Cross Sections of ClOOCl - Laboratory Work and Application in MIPAS-B Measurements |
title_full_unstemmed |
Infrared Absorption Cross Sections of ClOOCl - Laboratory Work and Application in MIPAS-B Measurements |
title_sort |
infrared absorption cross sections of cloocl - laboratory work and application in mipas-b measurements |
publishDate |
2010 |
url |
https://elib.dlr.de/66169/ https://elib.dlr.de/66169/1/HITRAN_2010_v2.pdf |
genre |
Antarc* Antarctic Kiruna |
genre_facet |
Antarc* Antarctic Kiruna |
op_relation |
https://elib.dlr.de/66169/1/HITRAN_2010_v2.pdf Birk, M. und Wagner, G. und Oelhaf, H. und Wetzel, G. (2010) Infrared Absorption Cross Sections of ClOOCl - Laboratory Work and Application in MIPAS-B Measurements. The 11th HITRAN Database Conference, 2010-06-16 - 2010-06-18, Cambridge, MA, USA. |
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1799485115650277376 |