[{"@context":"http:\/\/schema.org\/","@type":"Dataset","identifier":"https:\/\/doi.org\/10.17043\/stordalen-lakes-ch4-diff-1","@id":"https:\/\/doi.org\/10.17043\/stordalen-lakes-ch4-diff-1","name":"Methane diffusive fluxes from subarctic lakes on the Stordalen Mire, Abisko, Northern Sweden","description":"This dataset provides measurements of the diffusive flux of methane (CH\u2084), a strong climate forcing trace gas, to the atmosphere from three subarctic lakes located on the Stordalen Mire in northern Sweden.\r\n\r\nWe measured turbulence-driven diffusive fluxes of CH\u2084 with floating chambers during the ice-free seasons of 2010 to 2017, approximately every 1\u2060\u200a\u2013\u200a\u20602 weeks, from different locations in the lakes. The lakes are small (surface area 0.010\u2060\u200a\u2013\u200a\u20600.17 km\u00b2) and shallow (max. depth 1.3\u2060\u200a\u2013\u200a\u20606.7 m), and are structural features of the landscape (i.e. non-thermokarst). The chambers were deployed for 24 hours to integrate diel changes in the surface concentration and gas transfer velocity, during which the chamber headspace was sampled 2\u2060\u200a\u2013\u200a\u20604 times. Gas concentrations were measured on a gas chromatograph. A flux was computed from the rate increase of CH\u2084 in the chamber headspace. Paired measurements of key environmental variables (temperature and wind speed) are also provided. This is a unique dataset in both its spatiotemporal resolution and length.\r\n\r\nThe measurements have been used to assess the environmental drivers of CH\u2084 emissions from lakes to the atmosphere, and how emissions might change under continued Arctic warming.","url":"http:\/\/bolin.su.se\/data\/stordalen-lakes-ch4-diff-1","keywords":["Lacustrine","Arctic carbon","Lake","Methane","Flux","Diffusion","Subarctic","Earth science > Atmosphere > Atmospheric chemistry > Carbon and hydrocarbon compounds > Methane"],"creator":{"@type":"Person","name":"Joachim Jansen, Martin Wik, Jo Sn\u00f6\u00e4lv, Patrick Crill"},"citation":"Jansen J, Thornton BF, Cort\u00e9s A, Sn\u00f6\u00e4lv J, Wik M, MacIntyre S, Crill PM. (2020). Drivers of diffusive CH\u2084 emissions from shallow subarctic lakes on daily to multi-year timescales. Biogeosciences, 17, 1911\u2060\u200a\u2013\u200a\u20601932. doi:10.5194\/bg-17-1911-2020","license":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/","isAccessibleForFree":true,"includedInDataCatalog":{"@type":"DataCatalog","name":"Bolin Centre for Climate Research, Stockholm University","identifier":"https:\/\/bolin.su.se\/data\/","url":"https:\/\/bolin.su.se\/data\/"},"distribution":{"@type":"DataDownload","encodingFormat":"application\/zip","contentUrl":"https:\/\/bolin.su.se\/data\/uploads\/jansen-2020-6.zip"},"size":329589,"isBasedOn":"Jansen J, Thornton BF, Cort\u00e9s A, Sn\u00f6\u00e4lv J, Wik M, MacIntyre S, Crill PM. (2020). Drivers of diffusive CH\u2084 emissions from shallow subarctic lakes on daily to multi-year timescales. Biogeosciences, 17, 1911\u2060\u200a\u2013\u200a\u20601932. doi:10.5194\/bg-17-1911-2020","temporalCoverage":"2010-06-30\/2010-06-30"}]