Title: Copernicus Sentinel-2 detects methane plume
Description: This image features examples of each of the three retrievals for a strong methane point source detected by Copernicus Sentinel-2A at a well pad in the Algerian Hassi Messaoud oil field, on 20 November 2019, along with band-11 and band-12 reflectance data for that day and a previous reference day when no plume was present (6 October 2019). The multi-band–multi-pass (MBMP) retrieval performs best for this scene (panel f).
Researchers focused their attention on a 4 x 4 km2 scene around the point source. Methane emissions are not detectable in the band-12 reflectances on the reference day (panel a), but band-12 extinction is evident on 20 November 2019, emanating northward from a device in the centre of the domain (panel b).
Copyright: Contains modified Copernicus Sentinel data (2019)/processed by School of Engineering and Applied Science at Harvard University