Data products

UV Aerosol Index


The Aerosol Index (AI) is a well-established data product that has been calculated for several different satellite instruments spanning a period of nearly 40 years. The S5P/TROPOMI aerosol index is referred to as the Ultraviolet Aerosol Index (UVAI). The relatively simple calculation of the Aerosol Index is based on wavelength dependent changes in Rayleigh scattering in the UV spectral range where ozone absorption is very small. UVAI can also be calculated in the presence of clouds so that daily, global coverage is possible. This is ideal for tracking the evolution of episodic aerosol plumes from dust outbreaks, volcanic ash, and biomass burning. The figure below depicts several global sources of absorbing aerosols measured by the UVAI. 

Data product version summary (click current version number for latest PUM).
Version number Version Effective Date Summary of Changes
1.0.0 6 months post-launch to next update Post-Phase E1 updates
0.11.4 present to 6 months post-launch First product release 



The Algorithm Theoretical Basis Document (ATBD) can be found by clicking here and the Product User Manual (PUM) link is located on the right under Documentation. Product README (PRF) and Sample Data Files are being updated based on a new release of the processing software and will be available for download prior to launch.

After launch, preliminary product results will be provided during the Commissioning Phase and the Operational Phase.