Copernicus Sentinel-5P Mapping Portal
esa european commission

Sentinel-5P Volcanic SO₂ COBRA (7km)

This map is based on PRE-OPERATIONAL Sentinel-5P L2 products. It may get updated at any point without advance notice, and long term availability is not guaranteed.

About Volcanic SO₂ COBRA (7km)

This online platform uses data from the Copernicus Sentinel-5P satellite and shows the daily sulfur dioxide concentrations coming primarily from volcanic sources.
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The sulfur dioxide map shown here is measured by the Tropomi instrument on the Sentinel 5 Precursor satellite. More information on the Tropomi SO2 measurements and quality assessment can be found in the Product Readme file.

Note that for data shown, SO2 from potential anthropogenic sources has not been filtered out, and SO2 from such sources can therefore still show up.

About this S5P-PAL map

The maps shown on this site have been based on the latest pre-operational Sentinel-5P Sulfur Dioxide Level2- products using the COBRA algorithm (L2__SO2CBR), available from the Copernicus Data Space Ecosystem. The readme file of this product can be found here.
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The Copernicus Sentinel-5P SO2 measurements are those retrieved assuming SO2 at an altitude of 7km and explicitly filtering for pixels where a volcanic source is most likely (sulfurdioxide_detection_flag > 0) and where the solar zenith angle is within limits (SZA < 70°). The measurements are then 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.