Following unusual seismic disturbances in the Baltic Sea, several leaks were discovered last week in the underwater Nord Stream 1 and 2 gas pipelines, near Denmark and Sweden. Neither pipeline was transporting gas at the time of the blasts, but they still contained pressurized methane – the main com
With the unexplained gas release posing a serious question about the incident’s environmental impact, a suite of complementary Earth observation satellites carrying optical and radar imaging instruments were called upon to characterize the gas leak bubbling in the Baltic.
On September 26, Planet satellites captured an image of the Nord Stream Gas pipeline rupture in the Baltic Sea, approximately 20 km southeast of Bornholm Island, Denmark. Credit: Planet Labs PBC This radar image was captured on September 28 by ICEYE— the first New Space company to join the Copernicus Contributing Missions fleet. Credit: ICEYE 2022
In response to the gas leak, GHGSat, a leader in methane emissions monitoring from space and also part of ESA’s Third Party Mission Program, 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 was able to target the area where the sun’s light reflected the strongest off the sea surface – known as the ‘glint spot’.
Claus Zehner, Copernicus Sentinel-5P, Altius and Flex Missions Manager, mentions: “Besides GHGSat, the Copernicus Sentinel-2 satellite provided methane concentration measurements emitted by this pipeline leak which highlights the feasibility to use both public funded and commercial satellites in a synergistic way.”
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