SAGE III-ISS Version 5.1 Announcement

Jan. 28, 2019, 7 a.m.


The NASA Langley Atmospheric Sciences Data Center (ASDC) and the Stratospheric Aerosol and Gas Experiment (SAGE) III/ International Space Station (ISS) team announce the public release of Version 5.1. This version is the first official release of SAGE III/ISS that includes provisional products suitable for use in both validation and research studies and some new beta data products. The V5.1 data products have been screened by the SAGE III/ISS team in order to remove failed events and/or specific product profiles. Version 5.1 replaces Version 5.0, which will be withdrawn from public availability. The public is invited to make comments on the new release.

Specifically, vertical profiles of ozone (O3), nitrogen dioxide (NO2), and water vapor (H2O) concentrations as well as multi-wavelength aerosol extinction coefficients are included in the solar Level 2 data product files. The vertical profiles of H2O concentration are a beta product for this release. Three O3profiles are available in this release of the solar products: a UV-based mesospheric beta product and two Chappuis-based provisional products. One Chappuis-based product uses a spectrally-focused spectral fitting retrieval, while the other uses a broad-spectrum retrieval scheme that is similar to that of SAGE II. Composite ozone and retrieved temperature/pressure products are not included in the V5.1 data set. Slant path (line of sight) quantities have been removed permanently from the product files. Vertical profiles of O3 and nitrogen trioxide (NO3) concentrations are included in the lunar Level 2 product files. Chlorine Dioxide (OClO) and NO2 from lunar occultation are not included in this release. The channel wavelengths used in solar and lunar retrievals are available in the Data Product User’s Guide.

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