In response to the gas leak, GHGSat, a leader in methane emissions monitoring from space and also part of ESA's Third Party Mission Programme, tasked its satellites to measure the pipeline leak with its constellation of high-resolution satellites. By tasking its satellites to obtain measurements at larger viewing angles, GHGSat were able to target the area where the sun’s light reflected the strongest off the sea surface – known as the ‘glint spot’.
On 30 September, the estimated emission rate derived from its first methane concentration measurement was 79 000 kg per hour – making it the largest methane leak ever detected by GHGSat from a single point-source. This rate is extremely high, especially considering its four days following the initial breach, and this is only one of four rupture points in the pipeline.
Read full story: Satellites detect methane plume in Nord Stream leak