NOAA’s Global Monitoring Division carries out balloon launches to measure the ozone layer and annual development of the Antarctic Ozone Hole from the Amundsen-Scott South Pole Station.  This year’s lowest total ozone column measurement of 136 Dobson Units on September 25th was relatively high when compared to the last 32 years. Ozone holes each year… Read More


After six straight months of darkness, the Sun has finally returned to the sky above the Amundsen-Scott South Pole Station.  NOAA scientists working at the station and collecting air samples at the Atmospheric Research Observatory (ARO) experience only one sunrise, and one sunset per year due to the unique location on Earth’s axis.  Along with… Read More


The Ozone Layer protects life on Earth by filtering out harmful ultraviolet (UV) radiation from the sun that is a primary cause of skin cancer and cell damage in plants and animals.  In the 1970’s scientists linked chlorofluorocarbons (CFCs) developed for use in air conditioners and aerosol spray cans to an accumulation of stratospheric chlorine, a… Read More


By Irina Petropavlovskikh, CIRES and NOAA scientist International Day for Preservation of Ozone Layer will be celebrated on September 16, 2017 under the auspices of the  United Nations Environmental Program ( UNEP), and many international organizations will join in celebration. After 197 countries ratified the multilateral environmental agreement of the Montreal Protocol 30 years ago,… Read More