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A global database of dissolved organic matter (DOM) concentration measurements in coastal waters (CoastDOM v1)
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2024 (English)In: Earth System Science Data, ISSN 1866-3508, Vol. 16, no 2, p. 1107-1119Article in journal (Refereed) Published
Abstract [en]

Measurements of dissolved organic carbon (DOC), nitrogen (DON), and phosphorus (DOP) concentrations are used to characterize the dissolved organic matter (DOM) pool and are important components ofbiogeochemical cycling in the coastal ocean. Here, we present the first edition of a global database (CoastDOMv1; available at https://doi.org/10.1594/PANGAEA.964012, Lønborg et al., 2023) compiling previously published and unpublished measurements of DOC, DON, and DOP in coastal waters. These data are complementedby hydrographic data such as temperature and salinity and, to the extent possible, other biogeochemical variables(e.g. chlorophyll a, inorganic nutrients) and the inorganic carbon system (e.g. dissolved inorganic carbon andtotal alkalinity). Overall, CoastDOM v1 includes observations of concentrations from all continents. However,most data were collected in the Northern Hemisphere, with a clear gap in DOM measurements from the SouthernHemisphere. The data included were collected from 1978 to 2022 and consist of 62 338 data points for DOC,20 356 for DON, and 13 533 for DOP. The number of measurements decreases progressively in the sequenceDOC > DON > DOP, reflecting both differences in the maturity of the analytical methods and the greater focuson carbon cycling by the aquatic science community. The global database shows that the average DOC concentration in coastal waters (average ± standard deviation (SD): 182±314 µmolC L−1; median: 103 µmolC L−1) is13-fold higher than the average coastal DON concentration (13.6 ± 30.4 µmol N L−1; median: 8.0 µmol N L−1),which is itself 39-fold higher than the average coastal DOP concentration (0.34 ± 1.11 µmol P L−1; median:0.18 µmol P L−1). This dataset will be useful for identifying global spatial and temporal patterns in DOM and willhelp facilitate the reuse of DOC, DON, and DOP data in studies aimed at better characterizing local biogeochemical processes; closing nutrient budgets; estimating carbon, nitrogen, and phosphorous pools; and establishing abaseline for modelling future changes in coastal waters. 

Place, publisher, year, edition, pages
Copernicus Publications, 2024. Vol. 16, no 2, p. 1107-1119
National Category
Oceanography, Hydrology and Water Resources Ecology
Identifiers
URN: urn:nbn:se:umu:diva-221514DOI: 10.5194/essd-16-1107-2024OAI: oai:DiVA.org:umu-221514DiVA, id: diva2:1840875
Funder
Swedish Research Council FormasAvailable from: 2024-02-27 Created: 2024-02-27 Last updated: 2024-02-28Bibliographically approved

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Publisher's full texthttps://essd.copernicus.org/articles/16/1107/2024/

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Andersson, Agneta

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CiteExportLink to record
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