Japan Geoscience Union Meeting 2025

Presentation information

[E] Oral

A (Atmospheric and Hydrospheric Sciences ) » A-AS Atmospheric Sciences, Meteorology & Atmospheric Environment

[A-AS05] Weather, Climate, and Environmental Science Studies using High-Performance Computing

Wed. May 28, 2025 3:30 PM - 5:00 PM Exhibition Hall Special Setting (5) (Exhibition Hall 7&8, Makuhari Messe)

convener:Hisashi Yashiro(National Institute for Environmental Studies), Masuo Nakano(Japan Agency for Marine-Earth Science and Technology), Miyakawa Tomoki(Atmosphere and Ocean Research Institute, The University of Tokyo), Takuya Kawabata(Meteorological Research Institute), Chairperson:Hisashi Yashiro(National Institute for Environmental Studies)

4:15 PM - 4:30 PM

[AAS05-10] Detection of methane emissions in satellite data at large scale using deep learning

★Invited Papers

*Bertrand Rouet-Leduc1,2, Claudia Hulbert2 (1.Kyoto University, Japan, 2.Geolabe, USA)

Keywords:Methane, AI, Satellite

We show that deep learning can overcome the trade-off in terms of spectral resolution that comes with multi-spectral satellite data, resulting in a methane detection tool with global coverage and high temporal and spatial resolution.
Comparisons with airborne methane measurement campaigns suggest that our method can detect methane point sources in Sentinel-2 data down to plumes of 200 to 300 kg CH4 h−1 source, a one order magnitude improvement over the state of the art.

Our model provides a significant step towards the automated, high resolution detection of methane emissions at a global scale, every few days, and opens the possibility to bridge the gap between area mapping of methane fluxes (TROPOMI, MethaneSAT) and targeted point source imagers (GHGSat, airborne detections, etc.).

In addition to describing our method and how we assessed it, we show the results of systematically detecting methane sources over the Permian Basin, resulting in the largest methane point sources emissions catalogue to date.