Antarctic ozone 1965 - 1967

Ozone Dobson measurements were obtained in Antarctica at the Belgian "Base Roi Baudouin" (70°26' S, 24°19' E) in 1965 and 1966 during the last occupation of the station, together with other meteorological parameters and especially surface ozone. The original records were retrieved from the KNMI (Royal Netherlands Meteorological Institute) archives in De Bilt and have been put in the context of the present forty years series of Antarctic ozone observations..

 

 
The last salute to the colours at the end of the second expedition  (KNMI original photograph)

Despite excellent treatment at the time by the meteorologists in charge at the KNMI1, the original observers notes were revisited. No systematic anomaly in the first analysis was found, meteorological data from the site together with Brewer-Mast ozone soundings concur that the conditions did not correspond neither in 1965 nor 1966 to the current ozone hole situation.

However, the data yields excellent correlation with stratospheric temperature and shows in 1966 a clear November maximum in opposition to an October value around 344 Dobson units.

The present site corresponds to the digitisation of this data base in the frame of the general Belgian science Policy Office digitisation of the patrimony of the federal scientific establishment. It has an importance as it ensures the perennity of this data base which is one of the elements proving that the ozone hole has its origin in a change of chemical weather related to the introduction of the chlorofluorocarbons in the earth’s atmosphere.


1Wisse, J.A. and Meerburg, A.C., Ozone observations at "Base King Baudouin" in 1965 and 1966, Arch. Met. Geoph. Biokl., Ser. A., 18, 41-54, 1969.

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