Strong cooling is observed from 1974 to 1985 of the 100 mb temperature in November at Syowa (69°S, 40°E). Similar cooling is also seen in other pressure levels (70, 50, and 30mb levels) and other months. The rate of change for each month is very similar to the one of total amount of ozone at Syowa. A simple model is proposed which link ozone and temperature decrease at Antarctic