Institute of Meteorology and Climate Research

The Montreal protocol saves the ozone layer

 

Model calculations (grey line) and satellite observations (colored lines) agree that the ozone layer has been revovering since emission of ozone-destructing substances has been reduced by the Montreal protocol. These results have recently been published in Nature Geosciences, Vol 7, pages 442-449, DOI: 10.1038/NGEO2155, 2014, by Shepherd et al.

Further, it has been shown that tropospheric ozone changes have affected the total ozone column densities in a way that parts of the stratospheric ozone changes might have been masked in the total ozone record.

For details see http://www.nature.com/ngeo/journal/v7/n6/pdf/ngeo2155.pdf