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High-Resolution Methane Detection with the GHGSat Constellation
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Abstract
GHGSat operates a constellation of small satellites designed to detect and quantify methane emissions with high sensitivity compared with existing satellite technologies. An important feature of GHGSat measurements is the high spatial resolution (~25m), which enables attribution of emissions to specific facilities and subsequent corrective action from the operator. The GHGSat constellation currently has 9 satellites in orbit, and 3 more are planned for launch before the end of 2023 which will enable up to daily revisit times for any site in the world. This proceeding provides an overview of the GHGSat instruments, constellation, and processing algorithms. We also evaluate key instrument performance metrics, including column precision, detection threshold and quantification accuracy.
DOI
https://doi.org/10.31223/X5FF0X
Subjects
Atmospheric Sciences, Climate, Environmental Monitoring
Keywords
methane, remote sensing, satellite
Dates
Published: 2025-05-30 07:38
Last Updated: 2025-05-30 07:38
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