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Sci. Data"],"abstract":"<jats:p>Abstract. Biogeochemical cycling in the semi-enclosed Arctic Ocean is strongly\ninfluenced by land\u2013ocean transport of carbon and other elements and is\nvulnerable to environmental and climate changes. Sediments of the Arctic\nOcean are an important part of biogeochemical cycling in the Arctic and\nprovide the opportunity to study present and historical input and the fate of\norganic matter (e.g., through permafrost thawing). Comprehensive sedimentary records are required to compare differences\nbetween the Arctic regions and to study Arctic biogeochemical budgets. To\nthis end, the Circum-Arctic Sediment CArbon DatabasE (CASCADE) was\nestablished to curate data primarily on concentrations of organic carbon\n(OC) and OC isotopes (\u03b413C, \u039414C) yet also on\ntotal N (TN) as well as terrigenous biomarkers and other sediment\ngeochemical and physical properties. This new database builds on the\npublished literature and earlier unpublished records through an extensive\ninternational community collaboration. This paper describes the establishment, structure and current status of\nCASCADE. The first public version includes OC concentrations in surface\nsediments at 4244 oceanographic stations including 2317 with TN\nconcentrations, 1555 with \u03b413C-OC values and 268 with \u039414C-OC values and 653 records with quantified terrigenous biomarkers\n(high-molecular-weight n-alkanes, n-alkanoic acids and lignin phenols).\nCASCADE also includes data from 326 sediment cores, retrieved by shallow\nbox or multi-coring, deep gravity\/piston coring, or sea-bottom drilling.\nThe comprehensive dataset reveals large-scale features of both OC content\nand OC sources between the shelf sea recipients. This offers insight into\nrelease of pre-aged terrigenous OC to the East Siberian Arctic shelf and\nyounger terrigenous OC to the Kara Sea. Circum-Arctic sediments thereby\nreveal patterns of terrestrial OC remobilization and provide clues about thawing of permafrost. CASCADE enables synoptic analysis of OC in Arctic Ocean sediments and\nfacilitates a wide array of future empirical and modeling studies of the\nArctic carbon cycle. The database is openly and freely available online\n(https:\/\/doi.org\/10.17043\/cascade; Martens et al., 2021), is provided in various\nmachine-readable data formats (data tables, GIS shapefile, GIS raster), and\nalso provides ways for contributing data for future CASCADE versions. We\nwill continuously update CASCADE with newly published and contributed data\nover the foreseeable future as part of the database management of the Bolin\nCentre for Climate Research at Stockholm University.<\/jats:p>","DOI":"10.5194\/essd-13-2561-2021","type":"journal-article","created":{"date-parts":[[2021,6,8]],"date-time":"2021-06-08T07:52:10Z","timestamp":1623138730000},"page":"2561-2572","source":"Crossref","is-referenced-by-count":42,"title":["CASCADE \u2013 The Circum-Arctic  Sediment CArbon DatabasE"],"prefix":"10.5194","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4252-5107","authenticated-orcid":false,"given":"Jannik","family":"Martens","sequence":"first","affiliation":[]},{"given":"Evgeny","family":"Romankevich","sequence":"additional","affiliation":[]},{"given":"Igor","family":"Semiletov","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9611-0815","authenticated-orcid":false,"given":"Birgit","family":"Wild","sequence":"additional","affiliation":[]},{"given":"Bart","family":"van Dongen","sequence":"additional","affiliation":[]},{"given":"Jorien","family":"Vonk","sequence":"additional","affiliation":[]},{"given":"Tommaso","family":"Tesi","sequence":"additional","affiliation":[]},{"given":"Natalia","family":"Shakhova","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9432-8992","authenticated-orcid":false,"given":"Oleg V.","family":"Dudarev","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2276-324X","authenticated-orcid":false,"given":"Denis","family":"Kosmach","sequence":"additional","affiliation":[]},{"given":"Alexander","family":"Vetrov","sequence":"additional","affiliation":[]},{"given":"Leopold","family":"Lobkovsky","sequence":"additional","affiliation":[]},{"given":"Nikolay","family":"Belyaev","sequence":"additional","affiliation":[]},{"given":"Robie W.","family":"Macdonald","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3606-7130","authenticated-orcid":false,"given":"Anna J.","family":"Pie\u0144kowski","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5060-2155","authenticated-orcid":false,"given":"Timothy I.","family":"Eglinton","sequence":"additional","affiliation":[]},{"given":"Negar","family":"Haghipour","sequence":"additional","affiliation":[]},{"given":"Salve","family":"Dahle","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1530-6016","authenticated-orcid":false,"given":"Michael L.","family":"Carroll","sequence":"additional","affiliation":[]},{"given":"Emmelie K. L.","family":"\u00c5str\u00f6m","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7624-3568","authenticated-orcid":false,"given":"Jacqueline M.","family":"Grebmeier","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7734-8388","authenticated-orcid":false,"given":"Lee W.","family":"Cooper","sequence":"additional","affiliation":[]},{"given":"G\u00f6ran","family":"Possnert","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1922-0527","authenticated-orcid":false,"given":"\u00d6rjan","family":"Gustafsson","sequence":"additional","affiliation":[]}],"member":"3145","published-online":{"date-parts":[[2021,6,8]]},"reference":[{"key":"ref1","unstructured":"AMAP: Snow, Water, Ice and Permafrost in the Arctic (SWIPA) 2017, Arctic\nMonitoring and Assessment Programme (AMAP), Oslo, Norway, 2017."},{"key":"ref2","doi-asserted-by":"crossref","unstructured":"Belicka, L. L., Macdonald, R. W., Yunker, M. 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