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Stratospheric Aerosol and Gas Experiment (SAGE)

The Stratospheric Aerosol and Gas Experiment, SAGE, is a series of instruments designed by NASA to observe stratospheric ozone, aerosols, and water vapor from space. In the mid-1980s, scientists realized there was a problem with Earth’s protective coat of ozone...it was thinning. The SAGE family of instruments was pivotal in making accurate measurements of the amount of ozone loss in Earth’s atmosphere and helped leaders around the world institute an international treaty banning products containing harmful chemicals that destroy stratospheric ozone. SAGE is a key part of NASA’s mission to provide crucial, long-term measurements that will help humans better understand and care for Earth’s atmosphere.

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  • SAGE III Science Challenges Aboard the ISS

    Operating an occultation science instrument aboard a manned, frequently visited spacecraft the size of a football field poses many challenges to data collection and quality. The Stratospheric Aerosol and Gas Experiment (SAGE) III instrument, currently on board the International Space Station (ISS), is equipped with the tools necessary to mitigate and control these challenges. Dave […]

  • Langley Research Center Former Scientist Awarded Prestigious Medal

    Retired SAGE III Project Scientist, Dr. Joseph Zawodny, received the NASA Distinguished Service Medal on August 2. He was awarded for his “Sustained, distinguished contributions to an increased scientific understanding of the Earth’s upper atmosphere.” The Distinguished Service Medal is the most prestigious honor award, approved by the NASA administrator, given to a government employee […]