Stratospheric ozone protects life of Earth from harmful UV radiance. In addition, tropospheric ozone is a greenhouse gas which affects climate. In the lower troposphere, ozone is an air pollutant that plays an important role in tropospheric chemistry. The TROPOMI Ozone profiles data product provides the ozone concentration at 33 levels in the atmosphere, with a spatial resolution of 28x28km2 in nadir. In addition, the profile is reported as 6 sub-columns with a vertical sampling of 6km up to an altitude of 24km and a lower sampling above (24-32 km and 32 km to the top of atmosphere or TOA). The ozone profiles are derived using the optimal estimation method applied to the spectral window between 270 and 330 nm in the UV. The number of independent pieces of informaiton is in the range of 4-6. The reported 33 levels are therefore, not independent, and it is very important to use the averaging kernels with the data. The figure below is a 3d-representation of a single orbit of TROPOMI ozone profile data (orbit 10500) measured on 23 October 2019. The along-track index runs from the southern hemisphere on the lower-left to the northern hemisphere in the upper-right. The across-track index runs from west on the left to east on the right. The Antarctic ozone hole can be seen in the beginning of the orbit.
|Version number||Version Effective Orbit Number and Date||Summary of Changes|
OFFL: orbit 24655, 2022-07-17
|Current version, new L1b, DLER|
OFFL: orbit 21207, 2021-11-16
|Initial operational version|
USER DOCUMENTATION: ATBD, PUM, & README
Links to the Product Readme files (PRF), the Product User Manual (PUM), and the Algorithm Theoretical Basis Document (ATBD) are located on the right of this page under Documentation. This data product was publically released at the end of 2021 and is available in the NRTI and OFFL data streams via the Copernicus Open Data Access Hub (see link on right).