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Stratomesospheric C...
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Jones, N.University of Wollongong
(författare)
Stratomesospheric CO measured by a ground-based Fourier Transform Spectrometer over Poker Flat, Alaska: Comparisons with Odin/SMR and a 2-D model
- Artikel/kapitelEngelska2007
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LIBRIS-ID:oai:research.chalmers.se:2aa3c3ed-4b4c-439f-bfd7-f30d24cb10f0
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https://research.chalmers.se/publication/56287URI
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https://doi.org/10.1029/2006JD007916DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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Ämneskategori:ref swepub-contenttype
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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.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Kasai, Y.Japan National Institute of Information and Communications Technology (NICT)
(författare)
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Dupuy, E.University of Saskatchewan,Observatoire Aquitain des Sciences de l'Univers, OASU
(författare)
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Murayama, Y.Japan National Institute of Information and Communications Technology (NICT),National Institute of Polar Research
(författare)
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Urban, Joachim,1964Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)joaurb
(författare)
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Barret, B.Universite Paul Sabatier Toulouse III,Paul Sabatier University
(författare)
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Sinnhuber, M.Universität Bremen
(författare)
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Kagawa, A.Japan National Institute of Information and Communications Technology (NICT),Fujitsu FTP Corporation
(författare)
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Koshiro, T.Kyoto University
(författare)
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Ricaud, P.Universite Paul Sabatier Toulouse III,Paul Sabatier University
(författare)
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Murtagh, Donal,1959Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)donal
(författare)
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University of WollongongJapan National Institute of Information and Communications Technology (NICT)
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Journal of Geophysical Research112:D200148-02272156-2202
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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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visa fler...
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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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