Copernicus Sentinel-5P Mapping Portal
esa european commission

Sentinel-5P Total Column O3

This map is based on OPERATIONAL Sentinel-5P L2 products.

About Total Column O3

This online platform uses data from the Copernicus Sentinel-5P satellite and shows the daily ozone across the globe, as well as monthly, seasonal and yearly moving averages.

Ozone (O3) is of crucial importance for the equilibrium of the Earth's atmosphere. In the stratosphere, the ozone layer shields the biosphere from dangerous solar ultraviolet radiation. In the troposphere, it acts as an efficient cleansing agent, but at high concentration it also becomes harmful to the health of humans, animals, and vegetation. Ozone is also an important greenhouse-gas contributor to ongoing climate change.

The ozone map shown here is measured by the Tropomi instrument on the Sentinel 5 Precursor satellite. The Tropomi measurements are performed in the visible part of the spectrum. More information on the Tropomi ozone measurements and quality assessment can be found in the Product Readme file.

About this S5P-PAL map

The maps shown on this site have been based on collection 3 of the Sentinel-5P Ozone Level-2 products (L2__O3____), available from the Copernicus Data Space Ecosystem. The readme file of this product can be found here.

The Copernicus Sentinel-5P ozone measurements were first filtered based on the recommendation in the Product Readme file (only data with a qa_value > 0.5 was used). Then the measurements are mapped on a fixed latitude-longitude grid of 8193 x 16385 pixels. The grid is turned into an EPSG:4326 geotiff file using the appropriate color scale, which is again turned into an EPSG:3857 tile map.

The maps and underlying Level-3 gridded data files were generated by S5P-PAL. The Level-3 data can be downloaded from the S5P-PAL Data Portal, or directly via the download button below the map.

This service is provided as part of the Sentinel-5P Product Algorithm Laboratory (S5P-PAL)
and contains modified Copernicus Sentinel data processed by S[&]T.

Questions regarding this service can be send to the ESA EO Support Helpdesk.