Sea–air methane flux estimates derived from marine surface observations and instantaneous atmospheric measurements  in the northern Labrador Sea and Baffin Bay

Vogt, Judith; Risk, David; Bourlon, Evelise; Azetsu-Scott, Kumiko; Edinger, Evan N.; Sherwood, Owen A.

doi:https://doi.org/10.5194/bg-20-1773-2023

Articles | Volume 20, issue 9

https://doi.org/10.5194/bg-20-1773-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-20-1773-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 9

Research article

|

16 May 2023

Research article |

| 16 May 2023

Sea–air methane flux estimates derived from marine surface observations and instantaneous atmospheric measurements in the northern Labrador Sea and Baffin Bay

Judith Vogt, David Risk, Evelise Bourlon, Kumiko Azetsu-Scott, Evan N. Edinger, and Owen A. Sherwood

Data sets

Methane flux estimates from continuous atmospheric measurements and surface-water observations in the northern Labrador Sea and Baffin Bay Judith Vogt, David Risk, Kumiko Azetsu-Scott, Evan N. Edinger, Owen A. Sherwood https://doi.org/10.5683/SP3/6IUECA

Short summary

The release of the greenhouse gas methane from Arctic submarine sources could exacerbate climate change in a positive feedback. Continuous monitoring of atmospheric methane levels over a 5100 km voyage in the western margin of the Labrador Sea and Baffin Bay revealed above-global averages likely affected by both onshore and offshore methane sources. Instantaneous sea–air methane fluxes were near zero at all measured stations, including a persistent cold-seep location.