Vertical profiles of ozone, nitrogen dioxide (NO2), and water vapor (H2O) concentrations, as well as multi-wavelength aerosol extinction coefficient, are included in the solar Level 2 data product files. Three ozone profiles are available in this release of the solar products: an UV based mesospheric product (i.e., “Ozone_Mes” in the product files) and two Chappuis-based products. One Chappuis-based product uses a spectrally-focused fitting retrieval (i.e., “Ozone_MLR”) while the other uses a broad-spectrum retrieval scheme that is similar to that of SAGE II (i.e.,“Ozone_AO3”). Composite ozone and retrieved temperature/pressure products are not included in the v5.3 data set. Vertical profiles of ozone, nitrogen dioxide (NO2), and nitrogen trioxide (NO3) concentrations are included in the lunar Level 2 product files. Chlorine Dioxide (OClO) from lunar occultation is not included in this release. The channel wavelengths used in solar and lunar retrievals are available in the Data Product User’s Guide (DPUG).
When compared to v5.2, v5.3 improvements resulted in a net gain of 127 solar events through the end of 2022. There was a net loss of 11 lunar events between versions for this period.
A reader software package is available to access the products in their native format using Python or IDL. HDF5-formatted products are compatible with open-source readers. See the reader package for examples. Product formats have changed slightly from previous versions, so new readers are required for this release. Readers for previous versions of SAGE III data are not compatible with this version. The v5.3 readers do provide backward compatibility through v5.0.
Data Access Methods:
Direct Data Download
For questions regarding data usage, please ask us on the Earthdata Forum.
Related URLS: https://asdc.larc.nasa.gov/project/SAGE%20III-ISS