Solar radiation enters the Earth's atmosphere with a portion being scattered by clouds and aerosols.

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at the NASA Langley Research Center

SAGEIII-ISS Data Release

SAGEIII-ISS Data Release

Friday, October 27, 2017

Launched on February 19, 2017 on a SpaceX Falcon 9 from Kennedy Space Center, the Stratospheric Aerosol and Gas Experiment III on the International Space Station (SAGE III-ISS) is the second instrument from the SAGE III project, externally mounted on the International Space Station (ISS). This ISS-based instrument uses a technique known as occultation, which involves looking at the light from the Sun or Moon as it passes through Earth’s atmosphere at the edge, or limb, of the planet to provide long-term monitoring of ozone vertical profiles of the stratosphere and mesosphere. The data provided by SAGE III-ISS includes key components of atmospheric composition and their long-term variability, focusing on the study of aerosols, chlorine dioxide, clouds, nitrogen dioxide, nitrogen trioxide, pressure and temperature, and water vapor. SAGE data has historically been used by the World Meteorological Organization to inform their periodic assessments of ozone depletion. These new observations from the International Space Station will continue the SAGE team's contributions to ongoing scientific understanding of the Earth's atmosphere.


The initial release of SAGE III-ISS products focuses on solar occultation. While not included initially, later releases will include lunar occultation and water vapor data. Subsequent data releases will follow a monthly release schedule.


SAGE III-ISS information is provided in the V5 Release Notes, Data Products User's Guide, and ReadSoftware Package:


SAGE III-ISS data may be accessed via Earthdata Search and the ASDC Data Pool for products:
SAGE III/ISS L2 Solar Event Species Profiles (HDF-EOS) V5 (g3bssp)
SAGE III/ISS L2 Solar Event Species Profiles (Native) V5 (g3bsspb)
SAGE III/ISS L1B Solar Event Transmission Data (HDF-EOS) V5 (g3bt)
SAGE III/ISS L1B Solar Event Transmission Data (Native) V5 (g3btb)


Stay tuned for additional SAGEIII-ISS data products, documentation and data ordering options.