Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 18, issue 2
Articles | Volume 18, issue 2
https://doi.org/10.5194/amt-18-455-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-18-455-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 2
Research article
 | 
27 Jan 2025
Research article |  | 27 Jan 2025

Separating and quantifying facility-level methane emissions with overlapping plumes for spaceborne methane monitoring

Yiguo Pang, Longfei Tian, Denghui Hu, Shuang Gao, and Guohua Liu

Supplement

https://doi.org/10.5194/amt-18-455-2025-supplement

Data sets

Sources of Methane Emissions (Vista-CA), State of California, USA F. Hopkins et al. https://doi.org/10.3334/ORNLDAAC/1726

California's Methane Super-Emitters (Supplement) Riley M. Duren et al. https://doi.org/10.1038/s41586-019-1720-3

EMIT L2B Methane Enhancement Data 60 m V001 R. Green et al. https://doi.org/10.5067/EMIT/EMITL2BCH4ENH.001

EMIT L2B Estimated Methane Plume Complexes 60 m V001 R. Green et al. https://doi.org/10.5067/EMIT/EMITL2BCH4PLM.001

ERA5 hourly data on single levels from 1940 to present H. Hersbach et al. https://www.ecmwf.int/en/forecasts/dataset/ecmwf-reanalysis-v5

Model code and software

A Description of the Advanced Research WRF Model Version 4 C. Skamarock et al. https://www.mmm.ucar.edu/models/wrf

Download
Short summary
The spatial adjacency of methane point sources can result in plume overlapping, presenting challenges for quantification from space. A separation and quantification method combining the Gaussian plume model and the integrated mass enhancement method is proposed. A modern parameter estimation technique is introduced to separate the overlapping plumes from satellite observations. The proposed method is evaluated with synthesized observations and real satellite observations.
Read more