Stratospheric ozone

scientific image of ozone over Northern HemisphereWhen the ozone hole was first discovered over Antarctica, CIRES researchers played a key role in illuminating the chemical nature of the problem. Since then, we have continued to monitor stratospheric ozone around the globe, to investigate the processes that can alter it, and to help develop safer chemical alternatives to CFCs—the main chemical culprit behind ozone depletion. A particularly active area of CIRES research concerns the connection between aerosols and the CFC-related chemical depletion of ozone. Ongoing laboratory measurements, field studies, and modeling allow us to improve the accuracy of our predictions concerning ozone layer recovery.