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Stratomesospheric C...
Stratomesospheric CO measured by a ground-based Fourier Transform Spectrometer over Poker Flat, Alaska: Comparisons with Odin/SMR and a 2-D model
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- Jones, N. (author)
- University of Wollongong
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- Kasai, Y. (author)
- Japan National Institute of Information and Communications Technology (NICT)
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- Dupuy, E. (author)
- University of Saskatchewan,Observatoire Aquitain des Sciences de l'Univers, OASU
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- Murayama, Y. (author)
- Japan National Institute of Information and Communications Technology (NICT),National Institute of Polar Research
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- Urban, Joachim, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Barret, B. (author)
- Universite Paul Sabatier Toulouse III,Paul Sabatier University
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- Sinnhuber, M. (author)
- Universität Bremen
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- Kagawa, A. (author)
- Japan National Institute of Information and Communications Technology (NICT),Fujitsu FTP Corporation
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- Koshiro, T. (author)
- Kyoto University
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- Ricaud, P. (author)
- Universite Paul Sabatier Toulouse III,Paul Sabatier University
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- Murtagh, Donal, 1959 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2007
- 2007
- English.
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In: Journal of Geophysical Research. - 0148-0227 .- 2156-2202. ; 112:D20
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http://dx.doi.org/10...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The interseasonal variability of stratomesospheric CO is reported from Poker Flat, Alaska, using spectra from a ground-based Fourier Transform Spectrometer (gb-FTS) for the time period from 2000 to 2004. The CO spectra were analyzed using an optimal estimation technique that separates the tropospheric and stratospheric/mesospheric components into partial columns. The distribution of CO in the polar winter is such that the gb-FTS retrieved partial column is weighted to the mesosphere. The gb-FTS data are compared with measurements of partial column CO from the Sub-Millimeter Radiometer on board the Odin satellite and shown to be in very good agreement despite the relatively small sample size. The mean difference of the two data sets indicates a small positive bias (7.6 +/- 6%) in favor of the Odin data, with a correlation coefficient, r(2) = 0.91. The gb-FTS data indicate that there is a strong seasonal dependence of the CO partial column that is consistent with known winter polar thermospheric descent of CO enriched air. Year-to-year variability is explained in terms of mesospheric wind dynamics, which show 2004 and components of 2002 were affected by earlier than expected breakdown (30 +/- 13 d) of the winter polar circulation compared with 2000 to 2003. Finally, the measured CO data is compared with a 2-D chemical transport model that gives support to the idea that springtime polar mesospheric CO is driven by meridional winds.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Keyword
- Fourier Transform Infrared Spectroscopy
- Carbon monoxide
- Mesosphere
- Odin Sub-Millimetre Radiometer
- Atmospheric circulation
- Stratosphere
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Jones, N.
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Kasai, Y.
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Dupuy, E.
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Murayama, Y.
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Urban, Joachim, ...
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Barret, B.
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Sinnhuber, M.
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Kagawa, A.
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Koshiro, T.
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Ricaud, P.
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Murtagh, Donal, ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Meteorology and ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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Journal of Geoph ...
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Chalmers University of Technology