Articles | Volume 16, issue 13
https://doi.org/10.5194/amt-16-3421-2023
https://doi.org/10.5194/amt-16-3421-2023
Research article
 | 
06 Jul 2023
Research article |  | 06 Jul 2023

Controlled-release testing of the static chamber methodology for direct measurements of methane emissions

James P. Williams, Khalil El Hachem, and Mary Kang

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This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
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Small emission sources in aggregate disproportionately account for a large majority of total methane emissions from the US oil and gas sector
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Cited articles

Albertson, J. D., Harvey, T., Foderaro, G., Zhu, P., Zhou, X., Ferrari, S., Amin, M. S., Modrak, M., Brantley, H., and Thoma, E. D.: A mobile sensing approach for regional surveillance of fugitive methane emissions in oil and gas production, Environ. Sci. Technol., 50, 2487–2497, https://doi.org/10.1021/acs.est.5b05059, 2016. 
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Ars, S., Broquet, G., Yver Kwok, C., Roustan, Y., Wu, L., Arzoumanian, E., and Bousquet, P.: Statistical atmospheric inversion of local gas emissions by coupling the tracer release technique and local-scale transport modelling: a test case with controlled methane emissions, Atmos. Meas. Tech., 10, 5017–5037, https://doi.org/10.5194/amt-10-5017-2017, 2017. 
Aubrey, A. D., Thorpe, A. K., Christensen, L. E., Dinardo, S. Frankenberg, C., Rahn, T. A., and Dubey, M.: Demonstration of Technologies for Remote and in Situ Sensing of Atmospheric Methane Abundances-a Controlled Release Experiment, AGU Fall Meeting Abstracts, Vol. 2013, A44E-05, https://ui.adsabs.harvard.edu/abs/2013AGUFM.A44E..05A/abstract (last access: 28 June 2023), 2013. a
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Short summary
Methane is powerful greenhouse gas; thus, to reduce methane emissions, it is important that the methods used to measure methane are tested and validated. The static chamber method is an enclosure-based technique that directly measures methane emissions; however, it has not been thoroughly tested for the new variety of methane sources that it is currently being used for. We find that the static chamber method can accurately measure methane emissions under a wide range of methane emission rates.
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