Articles | Volume 9, issue 1
Atmos. Meas. Tech., 9, 295–311, 2016

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

Atmos. Meas. Tech., 9, 295–311, 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.
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.