Methane bubble fluxes from subarctic lakes on the Stordalen Mire, Abisko, Northern Sweden

Joachim Jansen, Martin Wik, Patrick Crill

This dataset provides measurements of the bubble flux of methane (CH₄), a strong greenhouse gas, to the atmosphere from three subarctic lakes located on the Stordalen Mire in northern Sweden.

We measured ebullition (bubbling) of CH₄ gas with bubble traps during the ice-free seasons of 2009 to 2017. The lakes are small (surface area 0.010⁠ – ⁠0.17 km²) and shallow (max. depth 1.3⁠ – ⁠6.7 m), and are structural features of the landscape (i.e. non-thermokarst). Up to 40 bubble traps were continuously deployed across depth zones and sampled (emptied of gas) every 10⁠ – ⁠3 days to capture the erratic nature of bubble gas release. CH₄ concentrations were measured on a gas chromatograph. A flux was computed from the gas volume flux and CH₄ concentration. Paired measurements of the surface sediment temperature are also provided. This is a unique dataset in both its spatiotemporal resolution and length.

The measurements have been used to assess the environmental drivers of CH₄ emissions from lakes to the atmosphere, and how emissions might change under continued Arctic warming.

Citation

Joachim Jansen, Martin Wik, Patrick Crill (2020) Methane bubble fluxes from subarctic lakes on the Stordalen Mire, Abisko, Northern Sweden. Dataset version 2. Bolin Centre Database. https://doi.org/10.17043/stordalen-lakes-ch4-ebul-2

References

Wik M, Crill PM, Varner RK, Bastviken D. (2013). Multiyear measurements of ebullitive methane flux from three subarctic lakes, Journal of Geophysical Research: Biogeosciences, 118, 1307⁠ – ⁠1321. https://doi.org/10.1002/jgrg.20103

Jansen J, Thornton BF, Wik M, MacIntyre S, Crill PM. (2020). Temperature proxies as a solution to biased sampling of lake methane emissions. Geophysical Research Letters, 47. https://doi.org/10.1029/2020GL088647

Data description

This dataset consists of one .csv file (data), one .png file (map of the sampling locations) and one .rtf file (readme).

The csv file has eight data columns:

• Lake
• Bubble trap ID
• Water depth (m)
• Day of year (DOY)
• Sampling time (UTC+2)
• Deployment period (days)
• Flux (mg CH₄/m²/day)
• Surface sediment temperature (°C)

Comments

Please, cite both the dataset itself and the publications by Wik et al. (2013) and Jansen et al. (2020) when using this dataset. The principal investigators (Joachim Jansen and [javascript protected email address]) would also welcome to receive a notification when the data are used in any publication or derivative work.

Version history

Version 2

Initial release.

Version 1

Not published. Used in the Wik et al. (2013) paper and has fewer years (2010⁠ – ⁠2014).