Preprints
https://doi.org/10.5194/essd-2023-158
https://doi.org/10.5194/essd-2023-158
04 May 2023
 | 04 May 2023
Status: this preprint is currently under review for the journal ESSD.

The Modern Ocean Sediment Archive and Inventory of Carbon (MOSAIC): version 2.0

Sarah Paradis, Kai Nakajima, Tessa S. Van der Voort, Hannah Gies, Aline Wildberger, Thomas Blattmann, Lisa Bröder, and Tim Eglinton

Abstract. Marine sediments play a crucial role in the global carbon cycle by acting as the ultimate sink of both terrestrial and marine organic carbon. To understand the spatiotemporal variability in the content, sources and dynamics of organic carbon in marine sediments, a curated and harmonized database of organic carbon and associated parameters is needed, which has prompted the development of the Modern Ocean Sediment Archive and Inventory of Carbon (MOSAIC) database. We present here MOSAIC version 2.0, which has expanded the spatiotemporal coverage of the original database by ~400 %, and now holds data from more than 17000 individual sediment cores from different continental margins on a global scale. Additional variables have also been incorporated into MOSAIC v.2.0 that are crucial to interpret the distribution of the quantity, origin and age of organic carbon in marine sediments globally. Sedimentological parameters (e.g., grain size fractions, mineral surface area) help understand the effect of hydrodynamic sorting and mineral protection in the distribution of organic carbon, while molecular biomarker signatures (e.g., lignins phenols, fatty acids, alkanes) can constrain the origin of organic matter with a greater level of specificity. MOSAIC v.2.0 also stores data from analyses performed on specific sediment and molecular fractions, which provide further insight of the processes that affect the degradation and ageing of organic carbon in marine sediments. While data included within MOSAIC is not exhaustive, it is continuously expanding and version control will allow users to benefit from updated versions while ensuring reproducibility of their findings.

Sarah Paradis et al.

Status: open (until 29 Jun 2023)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2023-158', Anonymous Referee #1, 21 May 2023 reply

Sarah Paradis et al.

Data sets

Dataset S1: Quality-check control for each variable Sarah Paradis, Kai Nakajima, Tessa S. Van der Voort, Hannah Gies, Aline Wildberger, Thomas Blattmann, Lisa Bröder, Tim Eglinton https://github.com/sarah-paradis/MOSAIC/blob/main/Datasets/DatasetS1.csv

Dataset S2: Analyses stored in MOSAIC Sarah Paradis, Kai Nakajima, Tessa S. Van der Voort, Hannah Gies, Aline Wildberger, Thomas Blattmann, Lisa Bröder, Tim Eglinton https://github.com/sarah-paradis/MOSAIC/blob/main/Datasets/DatasetS2.csv

MOSAIC 2.0 Sarah Paradis, Kai Nakajima, Tessa S. Van der Voort, Hannah Gies, Aline Wildberger, Thomas Blattmann, Lisa Bröder, Tim Eglinton http://mosaic.ethz.ch/

Sarah Paradis et al.

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Short summary
MOSAIC is a database of global organic carbon in marine sediments. This new version holds more than 17000 sediment cores and includes new variables to interpret organic carbon distribution, such as sedimentological parameters and biomarker signatures. MOSAIC also stores data from specific sediment and molecular fractions to better understand organic carbon degradation and ageing. This database is continuously expanding, and version control will allow reproducible research outputs.