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Detailed Reference Information |
Toon, G.C., Farmer, C.B., Schaper, P.W., Blavier, J.-F. and Lowes, L.L. (1989). Ground-based infrared measurements of tropospheric source gases over Antarctica during the 1986 austral spring. Journal of Geophysical Research 94: doi: 10.1029/89JD00795. issn: 0148-0227. |
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Simultaneous measurements of the atmospheric burdens of CH4, N2O, CO2, CF2Cl2, and CO above McMurdo Station, Antarctica, have been derived from solar absorption spectra obtained by the Jet Propulsion Laboratory high-resolution Fourier transform spectrometer. In all cases the burdens are smaller than mid-latitude values. Furthermore, retrievals of N2O and CH4, for which we have information on the vertical distribution not only from the zenith angle dependence of the strength of their absorption, but also from the shapes of their spectral lines, indicate that the tropospheric mixing ratios were normal and that the depletion of the burdens can best be accounted for by a downward shift of the volume mixing ratio profiles by some 6--8 km. This rules out the possibility of large-scale upwelling of ozone-poor tropospheric air into the stratosphere being the cause of the Antarctic springtime ozone depletion. ¿ American Geophysical Union 1989 |
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Abstract |
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Keywords
Atmospheric Composition and Structure, Troposphere—composition and chemistry, Information Related to Geographic Region, Antarctica |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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