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Measurements of the marine carbon system from different approaches, discrete sampling and sensors during July 2023 in a Mesocosm Facility, Wilhelmshaven, Germany

The file contains data from the Marine Carbon System. It gathered parameters from the inorganic carbon and incorporate the organic alkalinity as a main contributor to the sea surface microlayer (SML) compared to the Underlaying Water (ULW). Data was collected during Mesocosm Study from 18-May to 17-July 2024 in the Sea sURface Facility (SURF), Institute for Chemistry and Biology of the Marine Environment, Wilhelmshaven, Germany. Discrete samples to measure Dissolved Inorganic Carbon (DIC), Total Alkalinity (TA) and Organic Alkalinity (OA) were collected. For SML data, DIC, TA and OA was collected every third day following the glass‑plate technique (Harvey and Burzell, 1972). The ULW data, DIC, TA and OA were collected every day using a suction system to collect the sample from 0.4 m depth. Discrete samples were transported to the laboratory for further analysis; DIC was determined coulometrically (CM5017, UIC, IL, USA), and TA concentration was directly measured by high-precision closed-cell potentiometric titration (916 Ti-Touch, Metrohm, Switzerland). OA concentration was determined directly after TA was measured, using the same sample (from which all carbonate species had been purged), denoted as back titration. The dataset includes quality flags 0-4 with flags 1 and 2 are ready for use. See metadata for more information.

FerryBox-integrated membrane-based pCO2, temperature, salinity, oxygen, chlorophyll, turbidity and pH measurements of BU-C-2205 during RV Burchana cruise

The submitted data were collected with a FerryBox-Device on RV Burchana in the transitional and coastal waters of Lower Saxony, Germany. It contains data for temperature, salinity, pH, chlorophyll, oxygen, turbidity and carbon dioxide partial pressure (pCO2) at a water depth of approximately 1.3 m. Within the Carbostore project, totally 8 measurement campaigns were carried out in the years 2021 to 2023. The data is reprocessed and related to a 60 s period. In order to obtain a complete (but rough) overview of the pCO2 situation in this area, values outside the calibration limits (200-1000 µatm) were retained. Dissolved oxygen measurements were corrected by temperature and salinity. The sensors are regularly calibrated, maintained and replaced if necessary. The files are named according to the project, the year and the month of the campaign.

Copernicus-Auswertung für die Ostsee (WMS)

Dieser Darstellungs-Dienst (WMS) der Marinen Dateninfrastruktur Deutschland (MDI-DE) stellt Copernicus-Daten für die Ostsee zur Verfügung. Die Daten wurden für den Zeitraum 2022-2024 aggregiert (gemittelt) sowie zeitvariant ausgewertet und können u.a. für das MSRL Reporting genutzt werden. Bereitgestellte Parameter sind: Cyanobakterien, Trübung, Salinität, Temperatur und Azidität. Die Daten werden über unterschiedliche Zeiträume (täglich, monatlich, saisonal, 2-wöchentlich, MSRL-abgestimmt Jul-Aug) aggregiert, repräsentiert durch statistische Kennziffern.

Copernicus-Daten für die Ostsee (2022-2025)

Die Marine Dateninfrastruktur Deutschland (MDI-DE) stellt Copernicus-Daten für die Ostsee zur Verfügung. Die Daten wurden für den Zeitraum 2022-2024 aggregiert (gemittelt) sowie zeitvariant ausgewertet und können u.a. für das MSRL Reporting genutzt werden. Bereitgestellte Parameter sind: Cyanobakterien, Trübung, Salinität, Temperatur und Azidität. Die Daten werden über unterschiedliche Zeiträume (täglich, monatlich, saisonal, 2-wöchentlich, MSRL-abgestimmt Jul-Aug) aggregiert, repräsentiert durch statistische Kennziffern.

FerryBox-integrated membrane-based pCO2, temperature, salinity, oxygen, chlorophyll, turbidity and pH measurements of BU-C-2203 during RV Burchana cruise

The submitted data were collected with a FerryBox-Device on RV Burchana in the transitional and coastal waters of Lower Saxony, Germany. It contains data for temperature, salinity, pH, chlorophyll, oxygen, turbidity and carbon dioxide partial pressure (pCO2) at a water depth of approximately 1.3 m. Within the Carbostore project, totally 8 measurement campaigns were carried out in the years 2021 to 2023. The data is reprocessed and related to a 60 s period. In order to obtain a complete (but rough) overview of the pCO2 situation in this area, values outside the calibration limits (200-1000 µatm) were retained. Dissolved oxygen measurements were corrected by temperature and salinity. The sensors are regularly calibrated, maintained and replaced if necessary. The files are named according to the project, the year and the month of the campaign.

FerryBox-integrated membrane-based pCO2, temperature, salinity, oxygen, chlorophyll, turbidity and pH measurements of BU-C-2110 during RV Burchana cruise

The submitted data were collected with a FerryBox-Device on RV Burchana in the transitional and coastal waters of Lower Saxony, Germany. It contains data for temperature, salinity, pH, chlorophyll, oxygen, turbidity and carbon dioxide partial pressure (pCO2) at a water depth of approximately 1.3 m. Within the Carbostore project, totally 8 measurement campaigns were carried out in the years 2021 to 2023. The data is reprocessed and related to a 60 s period. In order to obtain a complete (but rough) overview of the pCO2 situation in this area, values outside the calibration limits (200-1000 µatm) were retained. Dissolved oxygen measurements were corrected by temperature and salinity. The sensors are regularly calibrated, maintained and replaced if necessary. The files are named according to the project, the year and the month of the campaign.

FerryBox-integrated membrane-based pCO2, temperature, salinity, oxygen, chlorophyll, turbidity and pH measurements of BU-C-2207 during RV Burchana cruise

The submitted data were collected with a FerryBox-Device on RV Burchana in the transitional and coastal waters of Lower Saxony, Germany. It contains data for temperature, salinity, pH, chlorophyll, oxygen, turbidity and carbon dioxide partial pressure (pCO2) at a water depth of approximately 1.3 m. Within the Carbostore project, totally 8 measurement campaigns were carried out in the years 2021 to 2023. The data is reprocessed and related to a 60 s period. In order to obtain a complete (but rough) overview of the pCO2 situation in this area, values outside the calibration limits (200-1000 µatm) were retained. Dissolved oxygen measurements were corrected by temperature and salinity. The sensors are regularly calibrated, maintained and replaced if necessary. The files are named according to the project, the year and the month of the campaign.

FerryBox-integrated membrane-based pCO2, temperature, salinity, oxygen, chlorophyll, turbidity and pH measurements of BU-C-2107 during RV Burchana cruise

The submitted data were collected with a FerryBox-Device on RV Burchana in the transitional and coastal waters of Lower Saxony, Germany. It contains data for temperature, salinity, pH, chlorophyll, oxygen, turbidity and carbon dioxide partial pressure (pCO2) at a water depth of approximately 1.3 m. Within the Carbostore project, totally 8 measurement campaigns were carried out in the years 2021 to 2023. The data is reprocessed and related to a 60 s period. In order to obtain a complete (but rough) overview of the pCO2 situation in this area, values outside the calibration limits (200-1000 µatm) were retained. Dissolved oxygen measurements were corrected by temperature and salinity. The sensors are regularly calibrated, maintained and replaced if necessary. The files are named according to the project, the year and the month of the campaign.

FerryBox-integrated membrane-based pCO2, temperature, salinity, oxygen, chlorophyll, turbidity and pH measurements of BU-C-2205 during RV Burchana cruise

The submitted data were collected with a FerryBox-Device on RV Burchana in the transitional and coastal waters of Lower Saxony, Germany. It contains data for temperature, salinity, pH, chlorophyll, oxygen, turbidity and carbon dioxide partial pressure (pCO2) at a water depth of approximately 1.3 m. Within the Carbostore project, totally 8 measurement campaigns were carried out in the years 2021 to 2023. The data is reprocessed and related to a 60 s period. In order to obtain a complete (but rough) overview of the pCO2 situation in this area, values outside the calibration limits (200-1000 µatm) were retained. Dissolved oxygen measurements were corrected by temperature and salinity. The sensors are regularly calibrated, maintained and replaced if necessary. The files are named according to the project, the year and the month of the campaign.

Modeled environmental data-layers and changes predicted under RCP2.6, 4.5 and 8.5 for the deep Atlantic Ocean

The data layers provided show current values for seawater temperature, pH, calcite and aragonite saturation (%), oxygen concentration, and particulate organic carbon (POC) flux to the seafloor at different depths (500, 1000, 2000, 3000, and 4000m) at the present day (1951-2000) and changes in these variables expected between 2041-2060 and 2081-2100 under different RCP scenarios. The data layers were generated following the methods described in Levin et al. (2020). In short, in 2019, we obtained the present day and future ocean projections for the different years which were compiled from all available data generated by Earth Systems Models as part of the Coupled Model Inter-comparison Project Phase 5 (CMIP5) to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Three Earth System Models, including GFDL‐ESM‐2G, IPSL‐CM5A‐MR, and MPI‐ESM‐MR were collected and multi-model averages of temperature, pH, O2 , export production at 100-m depth (epc100), carbonate ion concentration (co3), and carbonate ion concentration for seawater in equilibrium with aragonite (co3satarg) and calcite (co3satcalc) were calculated. The epc100 was converted to export POC flux at the seafloor using the Martin curve (Martin et al., 1987) following the equation: POC flux = export production*(depth/export depth)0.858. The export depth was set to 100 m, and the water depth using the ETOPO1 Global Relief Model (Amante and Eakins, 2008). Seafloor aragonite and calcite saturation were computed by dividing co3 by co3satarg and co3satcalc. All variableswere reported as the inter-annual mean projections between 1951-2000, 2041-2060, and 2081-2100. The data for calcite and aragonite saturation can be found in Morato et al. (2020).

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