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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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.