CCl2F2 mixing ratio profiles in the 1995 late winter arctic vortex from balloon-borne spectra

Details CCl2F2 mixing ratio profiles in the 1995 late winter arctic vortex from balloon-borne spectra CCl2F2 mixing ratio profiles in the 1995 late winter arctic vortex from balloon-borne spectra

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24.2367h&link_type=abstract

Geophysical Research Letters, Volume 24, Issue 19, p. 2367-2370

Physics

9

Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Atmospheric Composition And Structure: Transmission And Scattering Of Radiation, Atmospheric Composition And Structure: Instruments And Techniques, Meteorology And Atmospheric Dynamics: Middle Atmosphere Dynamics

Scientific paper

The vertical profile of CCl2F2 has been retrieved in the altitude range 15 to 22 km from solar occultation spectra recorded with a balloon-borne. Fourier transform spectrometer (0.013cm-1 resolution) launched on 22 March 1995 from Kiruna (Sweden, 67°N, 22°E). The choices of the grid of retrieval altitudes, of the spectral range, and of the absorption cross-section data used for the retrievals are studied carefully. The vertical distribution obtained is characteristic of conditions pertaining to the late winter Arctic vortex. The measured mixing ratio profile of CCl2F2 is discussed in connection with the N2O profile also retrieved with the same instrument. These remote sensing measurements of CCl2F2 are compared with in situ results obtained from the same location and during the same period with balloon-borne grab or cryosamplers. These data are analyzed in terms of diabatic descent in the polar vortex.

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