We are entering the primary ozone depletion period!

By Patrick Cullis, NOAA Global Monitoring Laboratory scientist September 18, 2024 GML staff at the South Pole Observatory collected this ozone profile on September 15–and we are entering the primary depletion period! The ozonesonde measurement looks right on track with the majority of the profile sitting on top of the median outside of a small… Read More

The International Ozone Commission, on the 37th anniversary of the Montreal Protocol, reports successes, developments, and future challenges in monitoring ozone layer recovery.

logo for the International Ozone Commission

By Irina Petropavlovskikh, President of the International Ozone Commission and a CIRES and NOAA scientist September 16th is the International Day for the Preservation of the Ozone Layer, celebrating the signing anniversary of the 1987 Montreal Protocol on Substances that Deplete the Ozone Layer. The Montreal Protocol is the treaty, ratified by every country in… Read More