[{"title":"The Circum-Arctic Sediment Carbon Database \u2014 CASCADE","summary":"The Circum-Arctic Sediment CArbon DatabasE (CASCADE) was established to curate data on concentrations of organic carbon (OC) and total nitrogen (TN), OC isotopes (\u03b4\u00b9\u00b3C, \u0394\u00b9\u2074C), as well as of terrigenous biomarkers and other sediment geochemical and physical properties of surface sediments and sediment cores in the Arctic Ocean. For surface sediments, this first public version of CASCADE includes more than 4000 oceanographic stations with OC concentrations, 2300 records with TN concentrations, 1500 stations with \u03b4\u00b9\u00b3C ratios, about 270 stations with \u0394\u00b9\u2074C values and over 650 records with quantified terrigenous biomarkers (high molecular weight n-alkanes, n-alkanoic acids and lignin phenols). Over 300 sediment cores complement the dataset of surface sediments across the Arctic Ocean by adding another 10500 observations of OC concentrations, over 4700 TN concentrations and over 2100 \u03b4\u00b9\u00b3C values to CASCADE. \r\n\r\nCASCADE enables synoptic analysis of OC biogeochemical cycling in the Arctic Ocean and facilitates a wide array of future empirical and modelling studies of the Arctic carbon cycle, which is tightly linked to the climate system and vulnerable to climate change. Among others, CASCADE permits studies of OC sources to Arctic Ocean sediments and thus provides insight in land-ocean transport of terrestrial OC from thawing Arctic soils and permafrost systems. \r\n\r\nCASCADE is drawn both from the published literature and from yet unpublished records through an extensive international community collaboration. The database is openly and freely available in this repository and will be managed and continuously updated with newly published and contributed data over the foreseeable future at the Bolin Centre for Climate Research at Stockholm University.","citations":"Martens J, Romankevich E, Semiletov I, Wild B, van Dongen B, Vonk J, Tesi T, Shakhova N, Dudarev OV, Kosmach D, Vetrov A, Lobkovsky L, Belyaev N, Macdonald RW, Pie\u0144kowski AJ, Eglinton TI, Haghipour N, Dahle S, Carroll ML, \u00c5str\u00f6m EKL, Grebmeier JM, Cooper LW, Possnert G, Gustafsson \u00d6 (2021) CASCADE \u2013 The Circum-Arctic Sediment CArbon DatabasE. Earth Syst Sci Data 13:2561\u2060\u200a\u2013\u200a\u20602572. doi:10.5194\/essd-13-2561-2021","comments":"Please cite the companion paper in ESSD and the database when using the CASCADE.\r\n\r\nThe CASCADE is guided and continuously curated by scientists at the Bolin Centre for Climate Change\r\n- [\u00d6rjan Gustafsson](https:\/\/www.aces.su.se\/staff\/orjan-gustafsson\/)\r\n- [Jannik Martens](https:\/\/www.aces.su.se\/staff\/jannik-martens\/)\r\n- [Matthias Brakebusch](https:\/\/www.aces.su.se\/staff\/matthias-brakebusch\/)\r\n\r\n#### Contributing Data\r\nIf you are interested in contributing your published or unpublished data to CASCADE, please contact [\u00d6rjan Gustafsson](https:\/\/www.aces.su.se\/staff\/orjan-gustafsson\/).\r\n\r\n#### Version history\r\n\r\n##### Version 2.0\r\nThis version includes some minor corrections and improvements of the datasets based on reviewer comments.\r\n\r\n##### Version 1.0\r\nInitial release.","category":"Marine","subcategory":"Arctic carbon","keywords":"CASCADE; Sediment; Carbon; Arctic; Biogeochemical cycles; Climate change","scientist":"Jannik Martens, Evgeny Romankevich, Igor Semiletov, Birgit Wild, Bart van Dongen, Jorien Vonk, Tommaso Tesi, Natalia Shakhova, Oleg V. Dudarev, Denis Kosmach, Alexander Vetrov, Leopold Lobkovsky, Nikolay Belyaev, Robie Macdonald, Anna J. Pie\u0144kowski, Timothy I. Eglinton, Negar Haghipour, Salve Dahle, Michael L. Carroll, Emmelie K.L. \u00c5str\u00f6m, Jacqueline M. Grebmeier, Lee W. Cooper, G\u00f6ran Possnert, \u00d6rjan Gustafsson","firstname":"\u00d6rjan","lastname":"Gustafsson","address":"Department of Environmental Science; Stockholm University","postalcode":"SE-106 91","city":"Stockholm","province":"","country":"Sweden ","parameters":"Earth science > Oceans > Ocean chemistry > Biogeochemical cycles","location":"Ocean > Arctic Ocean","progress":"Completed","language":"English","project":"The development of the CASCADE was supported by the European Research Council (ERC Advanced Grant CC-TOP 695331 to \u00d6G), the EU H2020-funded project Nunataryuk (Grant 773421); the Swedish Research Council (Grant 2017-01601); the Knut and Alice Wallenberg Foundation (KAW contract 2011.0027 to \u00d6G) as part of the SWERUS-C3 program; the Russian Science Foundation (grant 21-77-30001 to IS; grant 18-05-60214 to ER and AV); the Russian Academy of Sciences (grant 0149-2019-0006); the Russian Science Foundation (grant 18-05-60214); the Research Council of Norway (grant 228107 to MLC; grant 223259); VISTA (grant 6172 to EKL\u00c5); the Research Council of Canada (NSERC Discovery Grant RGPIN-2016-05457 to AJP); the NERC research grant (NE\/I024798\/1); and the Dutch-NWO (Veni grant # 863.12.004). ","publisher":"Bolin Centre Database","version":"2.0","constrains":"","access":"Free"}]