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. Pieńkowski, Timothy I. Eglinton, Negar Haghipour, Salve Dahle, Michael L. Carroll, Emmelie K.L. Åström, Jacqueline M. Grebmeier, Lee W. Cooper, Göran Possnert, Örjan Gustafsson
This dataset is part of the Circum-Arctic Sediment Carbon Database (CASCADE) and contains carbon data of surface sediments across the Arctic Ocean. Surface sediments are here defined as those collected from the water-sediment interface to a depth of maximum 5 cm.
This dataset permits studies of contemporary biogeochemical cycling in the Arctic Ocean using measured organic carbon (OC) concentrations, total nitrogen (TN) concentrations, OC isotopes (δ¹³C, Δ¹⁴C), and terrigenous biomarkers in surface sediments.
The dataset includes data from the published literature and yet unpublished data.
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Citation
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. Pieńkowski, Timothy I. Eglinton, Negar Haghipour, Salve Dahle, Michael L. Carroll, Emmelie K.L. Åström, Jacqueline M. Grebmeier, Lee W. Cooper, Göran Possnert, Örjan Gustafsson (2021) The Circum-Arctic Sediment Carbon Database — Carbon, nitrogen, isotopes and biomarkers in surface sediments of the Arctic Ocean. Dataset version 2. Bolin Centre Database. https://doi.org/10.17043/cascade-surface-sediments-2
References
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, Pieńkowski AJ, Eglinton TI, Haghipour N, Dahle S, Carroll ML, Åström EKL, Grebmeier JM, Cooper LW, Possnert G, Gustafsson Ö (2021) CASCADE – The Circum-Arctic Sediment CArbon DatabasE. Earth Syst Sci Data 13:2561 – 2572. https://doi.org/10.5194/essd-13-2561-2021
Data description
The dataset of surface sediments consists of one table, available as Excel spreadsheet (.xslx), tab-separated text (.txt) file, and as zipped GIS shapefile (in WGS84 geographic coordinate system):
- CASCADEsurfsed_v2.xlsx
- CASCADEsurfsed_v2.txt
- CASCADEsurfsed_v2_GISshp.zip
Data sheet structure
Each row in the CASCADE data sheet for surface sediments represents one oceanographic station, for which one or several carbon parameters were analyzed. All data and meta data for each station and measurement have are organized as columns in the data table. More detail about all parameters is provided in the companion manuscript.
Columns for ID and georeference
- CASCADE entry ID
- Sample code (as reported by data source)
- Latitude (decimal degrees)
- Longitude (decimal degrees)
- Upper sample depth (cm)
- Lower sample depth (cm)
- Water depth (m b.s.l.)
- Water depth based on IBCAO (m b.s.l.)
- Expedition or vessel name
- Sampling year
Carbon and Nitrogen (CN) data
- OC (%)
- TN (%)
- OC/TN
Carbon isotopes
- δ¹³C (‰ VPDB)
- Δ¹⁴C (‰)
Biomarkers
- n-alkanes C21-31 (µg g-1 OC)
- n-alkanes C27,29,31 (µg g-1 OC)
- n-alkanoic acids C20-30 (µg g-1 OC)
- lignin phenols (mg g-1 OC)
References
- Citation of CN data
- Citation of δ¹³C data
- Citation of Δ¹⁴C data
- Citation of biomarker data
Quality parameter and meta information
- Sediment sampler (e.g. grab sampler, multi corer, etc)
- Sample storage (0 for unknown, 1 for frozen, 2 for refrigerated)
- CN measurement (method of analysis)
- ¹³C measurement (method of analysis)
- AMS label
Comments
Please cite the companion paper in ESSD and the database when using the CASCADE.
The CASCADE is guided and continuously curated by scientists at the Bolin Centre for Climate Change
Version history
Version 2
Minor corrections and improvements of the dataset based on reviewer comments.
Version 1
Initial release.