Articles | Volume 9, issue 1
Atmos. Meas. Tech., 9, 295–311, 2016
https://doi.org/10.5194/amt-9-295-2016

Special issue: Limb observations of the middle atmosphere by space- and airborne...

Atmos. Meas. Tech., 9, 295–311, 2016
https://doi.org/10.5194/amt-9-295-2016

Research article 28 Jan 2016

Research article | 28 Jan 2016

Retrieval of sodium number density profiles in the mesosphere and lower thermosphere from SCIAMACHY limb emission measurements

M. P. Langowski et al.

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Cited articles

Bovensmann, H., Burrows, J. P., Buchwitz, M., Frerick, J., Noël, S., Rozanov, V. V., Chance, K. V., and Goede, A. P. H.: SCIAMACHY: mission objectives and measurement modes, J. Atmos. Sci., 56, 127–150, 1999.
Burrows, J. P., Hölzle, E., Goede, A. P. H., Visser, H., and Fricke, W.: SCIAMACHY–scanning imaging absorption spectrometer for atmospheric chartography, Acta Astronaut., 35, 445–451, 1995.
Casadio, S., Retscher, C., Lang, R., di Sarra, A., Clemesha, B., and Zehner, C.: Retrieval of mesospheric sodium densities from SCIAMACHY daytime limb spectra, in: Proc. Envisat Symposium, Montreux, Switzerland, 23–27 April 2007.
Chamberlain, J. W., Hunten, D. M., and Mack, J. E.: Resonance scattering by atmospheric sodium-IV abundance of sodium in twilight, J. Atmos. Terr. Phys., 12, 153–165, 1958.
Chance, K. and Kurucz, R. L.: An improved high-resolution solar reference spectrum for earth's atmosphere measurements in the ultraviolet, visible and near infrared, J. Quant. Spectrosc. Ra., 111, 1289–1295, 2010.
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Short summary
An algorithm has been developed for the retrieval of sodium atom (Na) number density on a latitude and altitude grid from SCIAMACHY limb measurements of the Na resonance fluorescence (multiannual means 2008–2012). The Na layer peaks at 90 to 93 km altitude and has a FWHM of 5 to 15 km. A summer minimum in peak density and width is observed at high latitudes. At low latitudes, a semiannual oscillation is found. The results are compared with other measurements and models and agree well with these.