Alkalinity concentrations from two benthic chambers and the ambient bottom water during an in-situ incubation experiment in July 2025

Description: The dataset contains total alkalinity measurements from water samples collected during a 16-day in-situ incubation experiment in the Baltic Sea (2025-07-12 to 2025-07-29). Samples were collected using an automated glass-syringe sampler deployed within two benthic chambers of a Biogeochemical Observatory (BIGO, Sommer et al., 2009) at 54° 34.432' N, 10° 10.776' E, at 22 m water depth. In one chamber, 29 g of fine calcite powder were added to the bottom water. Seven samples per chamber and from the ambient bottom water were taken to monitor alkalinity changes resulting from calcite dissolution, providing a direct measure of the ocean alkalinity enhancement (OAE)

Global identifier:

Doi(
    "10.1594/PANGAEA.992806",
)

DataMeasurements(
    DataMeasurements {
        domain: Unspecified,
        station: None,
        measured_variables: [
            "Alkalinity, total",
            "Instrument",
            "LATITUDE",
            "LONGITUDE",
            "Sample ID",
            "Sample type",
            "Sampling date/time, experiment",
            "Treatment",
            "Type of study",
        ],
        methods: [
            "Titration device, Metrohm, 775 Dosimat",
        ],
    },
)

Tags: Geografische Koordinaten ? Bodenwasser ? Basizität ? Studie ? Wasserprobe ? Meeresgewässer ? Carbon Dioxide Removal ? Ostsee ? calcite weathering ? enhanced weathering ? incubation experiment ?

Bounding boxes: 10.179599999999995° .. 10.179599999999995° x 54.573869999999964° .. 54.573869999999964°

License: Creative Commons Namensnennung 4.0

Language: Englisch/English

Organisations

• Bundesministerium für Forschung, Technologie und Raumfahrt (Finanzielle Förderung)
• GEOMAR - Helmholtz Centre for Ocean Research Kiel (Management, Mitwirkung) [1]
• PANGAEA (Herausgeberschaft)
• Yale University (Mitwirkung)

Persons

• Andy W Dale (Beitragende*r) [1]
• Klaus Wallmann (Beitragende*r) [1] [ORCID]
• Michael Fuhr (Beitragende*r) [1] [ORCID]
• Mirjam Perner (Beitragende*r) [1] [ORCID]
• Naveen Kumar Parameswaran (Beitragende*r) [1]
• Nicole Adam-Beyer (Beitragende*r) [1]
• Stefan Sommer (Beitragende*r) [1]

Issued: 2026-03-17

Modified: 2026-03-17

Time ranges: 2025-07-12 - 2025-07-29

Resources

• https://doi.pangaea.de/10.1594/PANGAEA.992806?format=textfile (TSV)

Status

Aktiv

Quality score

• Overall: 0.94
• Findability: 0.78

  • Title: 0.80
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  • Spatial: Point (0.75)
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• Accessibility: 1.00

  • Landing page: Specific (1.00)
  • Direct access: true
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• Interoperability: 1.00

  • Open file format: true
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  • Machine-readable metadata: true
  • Machine-readable data: true
• Reusability: 1.00

  • License: ClearlySpecifiedAndFree (1.00)
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