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Enhancing Surface Methane Fluxes from an Oligotrophic Lake: Exploring the Microbubble Hypothesis

Daniel F. McGinnis, Georgiy Kirillin, Kam Tang Orcid Logo, Sabine Flury, Pascal Bodmer, Christof Engelhardt, Peter Casper, Hans-Peter Grossart

Environmental Science & Technology, Volume: 49, Issue: 2, Pages: 873 - 880

Swansea University Author: Kam Tang Orcid Logo

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DOI (Published version): 10.1021/es503385d

Published in: Environmental Science & Technology
Published: 2015
URI: https://cronfa.swan.ac.uk/Record/cronfa20015
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Item Description: Water-air exchange of carbon dioxide and methane is an important component of the global carbon cycle. We showed that methane flux across the water-air interface was 2.5 times stronger than carbon dioxide flux, and was also higher than that predicted by Fickian diffusion. Using a systematic analysis approach we showed that microbubbles originating from atmospheric bubble entrainment and/or gas supersaturation stripped the water of methane and greatly enhanced methane outflux. The results have significant implications for greenhouse gas emission from aquatic environments and climate regulation.
College: College of Science
Issue: 2
Start Page: 873
End Page: 880