Articles | Volume 17, issue 2
https://doi.org/10.5194/amt-17-863-2024
https://doi.org/10.5194/amt-17-863-2024
Research article
 | 
01 Feb 2024
Research article |  | 01 Feb 2024

Offshore methane detection and quantification from space using sun glint measurements with the GHGSat constellation

Jean-Philippe W. MacLean, Marianne Girard, Dylan Jervis, David Marshall, Jason McKeever, Antoine Ramier, Mathias Strupler, Ewan Tarrant, and David Young

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Latest update: 15 Jul 2024
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Short summary
We demonstrate the capabilities of the GHGSat satellite constellation to detect and quantify offshore methane emissions using a sun glint observation mode. Using this technique, we observe offshore methane emissions from space ranging from 180 kg h−1 to 84 000 kg h−1. We further assess the instrument performance in offshore environments, both empirically and using analytical modelling, and find that the detection limit varies with latitude and season.