Today’s Video of the Day from NASA Goddard describes how computer models helped scientists pinpoint the source of an ozone-depleting gas.
In 1987, countries around the world signed the Montreal Protocol in an effort to reduce emissions of long-lived gases such as chlorofluorocarbons, which can destroy the ozone layer.
Scientists around the world are continuously monitoring the atmospheric concentration of these gases, particularly CFC-11.
A few years ago, NOAA expert Dr. Steve Montzka noticed that CFC levels have been declining slower than expected across the globe. Observations from a monitoring station in Korea revealed that CFC emissions had been increasing in China.
Monitoring the ozone is part of an long-running partnership between NASA and the National Oceanic and Atmospheric Administration (NOAA).
Video Credit: NASA Goddard