Science & Technology

NASA’s SAGE III Carries on Critical Measurements of Stratospheric Aerosols and Ozone

SAGE III launched to the Worldwide House Station in February of 2017. Credit: NASA

On the fourth anniversary of its first-light measurements, we’re looking at some of the important knowledge collected by NASA’s Stratospheric Aerosol and Fuel Experiment III (SAGE III) aboard the Worldwide House Station. Launched to the station in February 2017, SAGE III is the newest in a collection of SAGE devices which have measured stratospheric gases and aerosols from area. The SAGE household of devices began in 1979 and is one of NASA’s longest-running Earth-observing packages.

Knowledge from SAGE II helped verify human-driven adjustments to the ozone layer, which contributed to the 1987 Montreal Protocol that banned some of essentially the most harmful industrially-produced ozone-depleting chemical compounds. Stratospheric ozone acts as a sunscreen for the Earth, filtering out dangerous photo voltaic radiation by absorbing some of the Solar’s ultraviolet rays, offering folks, animals and crops some safety from that dangerous radiation.

Credit score: Allison McMahon (SSAI): Producer; Haley Reed (ADNET): Producer; David Flittner (NASA/LaRC): Scientist; Marilee Roell (NASA/LaRC): Scientist; Jamie Nehrir (NASA/LaRC): Engineer; Kevin Leavor (SSAI): Scientist; NASA’s Goddard House Flight Middle Conceptual Picture Lab; and NASA’s Scientific Visualization Studio(SVS)

This newest SAGE III instrument helps scientists monitor the restoration of ozone ensuing from the discount in emissions of ozone-depleting substances referred to as for below the Montreal Protocol. SAGE III has additionally measured the intrusion of aerosols into the stratosphere from intense wildfires in and , and from volcanic eruptions. These aerosols, which may stay within the stratosphere for months and even years, can result in variability within the local weather document. Water vapor, a potent greenhouse fuel that may be lofted into the stratosphere by excessive storms, can be seen to SAGE III. Although it’s regular to have some water vapor within the stratosphere, utilizing SAGE knowledge, scientists can higher perceive how year-to-year adjustments in tropical climate have an effect on the quantity of water vapor in areas of the stratosphere influenced by the tropical climate circulation.

SAGE III makes measurements utilizing photo voltaic and lunar occultation, a method that includes taking a look at mild from the Solar or Moon because it passes via Earth’s environment on the edge, or limb, of the planet. The SAGE III payload on the area station is managed by NASA’s Langley Analysis Middle in Hampton, Virginia and was developed in partnership with the European House Company, Ball Aerospace Know-how Company, and NASA’s Johnson House Middle in Houston.

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