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Stratospheric Aerosol and Gas Experiment

From Wikipedia, the free encyclopedia

The Stratospheric Aerosol and Gas Experiment (SAGE) is a series of remote sensing satellite instruments used to study the chemical composition of earth's atmosphere. Specifically, SAGE has been used to study the Earth's ozone layer and aerosols at the troposphere through the stratosphere. The SAGE instruments use solar occultation measurement technique to determine chemical concentrations in the atmosphere. Solar occultation measurement technique measures sunlight through the atmosphere and ratios that measurement with a sunlight measurement without atmospheric attenuation. This is achieved by observing sunrises and sunsets during a satellite orbit. Physically, the SAGE instruments measure ultraviolet/visible energy and this is converted via algorithms to determine chemical concentrations. SAGE data has been used to study the atmospheres aerosols, ozone, water vapor, and other trace gases.

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There has been 3 series of SAGE instruments.


  1. ^ "SAGE I". NASA. April 1996. Archived from the original on 14 February 2013. Retrieved 4 March 2013.
  2. ^ "SAGE II: Understanding the Earth's Stratosphere". NASA. April 1996. Retrieved 12 March 2011.
  3. ^ "Meteor-3M Mission". NASA. 20 September 2007. Archived from the original on 18 December 2010. Retrieved 12 March 2011.
  4. ^ "About SAGE III on ISS". NASA. Retrieved 21 November 2015.

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This page was last edited on 29 March 2021, at 18:00
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