Suggested Searches

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.

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 that has personally contributed to the agency’s advancement of United States’ interests. The awardee’s achievement or contribution to NASA’s mission success must demonstrate such a high level of excellence that other awards given by the agency would be inadequate.

During his 30-year career, Dr. Zawodny distinguished himself as a respected leader of the Stratospheric Aerosol and Gas Experiment (SAGE) Group for his innovative advances in both remote sensing techniques (hardware) and retrieval algorithms (software). He provided technical guidance, critical measurements, and visionary leadership for important Earth Science missions and the international ozone assessment community. He significantly increased the accuracy and range of SAGE II ozone measurements which led to SAGE II data being regarded as the international standard for ozone profile measurements. He is responsible for the operational approach, methods, and instrument concept for SAGE III, was selected as Project Scientist to put the SAGE III instrument on the International Space Station, and did the early groundwork on occultation imagers which led to the development of SAGE IV.

Dr. Joseph Zawodny (center) receives the Distinguished Service Medal from NASA’s Administrator Jim Bridenstine (left) and Associate Administrator Steve Jurczyk (right).
Dr. Joseph Zawodny (center) receives the Distinguished Service Medal from NASA’s Administrator Jim Bridenstine (left) and Associate Administrator Steve Jurczyk (right).