Ozone Hole (IMAGE) American Geophysical Union Caption A map of ozone concentrations in the Southern Hemisphere shows thinning of the ozone layer over the South Pole. This region of reduced ozone, which is called the "ozone hole," causes changes in wind patterns and cloud cover. Credit NASA Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.