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Lookup NU author(s): Dr Guenther Uher
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
Measurements of dissolved organic carbon (DOC), nitrogen (DON), and phosphorus (DOP) con-centrations 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available at https://doi.org/10.1594/PANGAEA.964012, Lønborg et al., 2023) compiling previously pub-lished and unpublished measurements of DOC, DON, and DOP in coastal waters.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 concen-tration in coastal waters (average ± standard deviation (SD): 182 ± 314 μmol C L−1; median: 103 μmol C 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 biogeochem-ical processes; closing nutrient budgets; estimating carbon, nitrogen, and phosphorous pools; and establishing abaseline for modelling future changes in coastal waters.
Author(s): Lønborg C, Carreira C, Abril G, Agusti S, Amaral V, Andersson A, Aristegui J, Bhadury P, Bif MB, Borges AV, Bouillon S, Calleja ML, Cotovicz Jr LC, Cozzi S, Doval M, Duarte CM, Eyre B, Fichot CG, Garcia-Martin E, Garzon-Garcia A, Giani M, Goncalves-Araujo R, Gruber R, Hansell DA, Hashihama F, He D, Holding JM, Hunter WR, Ibanhez JSP, Ibello V, Jiang S, Kim G, Klun K, Kowalczuk P, Kubo A, Lee CW, Lopes CB, Maggioni F, Magni P, Marrase C, Martin P, McCallister SL, McCallum R, Medeiros PM, Moran XAG, Muller-Karger FE, Myers-Pigg A, Norli M, Oakes JM, Osterholz H, Park H, Paulsen ML, Rosentreter JA, Ross JD, Rueda-Roa D, Santinelli C, Shen Y, Teira E, Tinta T, Uher G, Wakita M, Ward N, Watanbe K, Xin Y, Yamashita Y, Yang L, Yeo J, Yuan H, Zheng Q, Álvarez-Salgado XA
Publication type: Article
Publication status: Published
Journal: Earth System Science Data
Year: 2024
Volume: 16
Issue: 2
Pages: 1107–1119
Online publication date: 27/02/2024
Acceptance date: 15/01/2024
Date deposited: 03/04/2024
ISSN (print): 1866-3508
ISSN (electronic): 1866-3516
Publisher: Copernicus Publications
URL: https://doi.org/10.5194/essd-16-1107-2024
DOI: 10.5194/essd-16-1107-2024
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