Satellite observations of southern hemisphere stratospheric ozone and temperature near the stratopause during October 1970 show these fields to have undergone large longitudinal variations, negatively correlated with each other. Radiative transfer model calculations of the corresponding variations in ozone solar heating rates, show that the observed negative correlation between temperature and ozone nearly doubles the rate of radiative damping of temperature perturbations in the upper stratosphere from that due to infrared radiation alone.