KOSMOS 2022 Bergen mesocosm study on ocean alkalinity enhancement: carbonate chemistry , CO2 flux data and calcification estimates
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2025
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| _version_ | 1867168237403242496 |
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| author | Schneider, Julieta Riebesell, Ulf Moras, Charly Marín-Samper, Laura Kittu, Leila Ortiz Cortes, Joaquin Schulz, Kai Georg |
| author_facet | Schneider, Julieta Riebesell, Ulf Moras, Charly Marín-Samper, Laura Kittu, Leila Ortiz Cortes, Joaquin Schulz, Kai Georg |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | A Large-scale mesocosm experiment was conducted in the temperate fjord ecosystem near Bergen, Norway during late spring 2022 to investigate the effects of OAE on biogeochemical processes and organisms under close-to-natural conditions. A non-CO2-equilibrated approach was chosen, simulating OAE with calcium- and silicon-based minerals. A gradient of five OAE levels was achieved by increasing total alkalinity (TA) by 0–600 µmol kg-1. Carbonate chemistry parameters were monitored for the total length of the 53-day experiment. The added TA remained relatively stable over the experimental period and the measured CO2 gas exchange rate was comparable to what would be expected for large oceanic regions. The study and data set offer insights into impacts of non-equilibrated alkalinity enhancement on the carbonate system, air-sea gas exchange and carbon fixation. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_983061 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | KOSMOS 2022 Bergen mesocosm study on ocean alkalinity enhancement: carbonate chemistry , CO2 flux data and calcification estimates Schneider, Julieta Riebesell, Ulf Moras, Charly Marín-Samper, Laura Kittu, Leila Ortiz Cortes, Joaquin Schulz, Kai Georg Air-sea CO2 flux; Alkalinity, total; AQUACOSM-plus; Aragonite saturation state; Bicarbonate ion; calcification; Calcification, cumulative; Calcite saturation state; Calculated; Carbon, inorganic, dissolved; carbonate system; Carbon dioxide, air-sea, flux; Carbon dioxide, dissolved; Carbon dioxide, partial pressure; Coccolithophoridae, total; CTD; DATE/TIME; Day of experiment; DEPTH, water; Event label; KOSMOS; KOSMOS_2022; KOSMOS_2022_Fjord; KOSMOS_2022_Mesocosm-M1; KOSMOS_2022_Mesocosm-M10; KOSMOS_2022_Mesocosm-M2; KOSMOS_2022_Mesocosm-M3; KOSMOS_2022_Mesocosm-M4; KOSMOS_2022_Mesocosm-M5; KOSMOS_2022_Mesocosm-M6; KOSMOS_2022_Mesocosm-M7; KOSMOS_2022_Mesocosm-M8; KOSMOS_2022_Mesocosm-M9; KOSMOS Bergen; Measured; MESO; mesocosm; Mesocosm experiment; Mesocosm label; Network of Leading Ecosystem Scale Experimental AQUAtic MesoCOSM Facilities Connecting Rivers, Lakes, Estuaries and Oceans in Europe and beyond; Nitrous oxide, dissolved; ocean alkalinity enhancement; Ocean-based Negative Emission Technologies; OceanNETs; pH; Phase; Salinity; Temperature, water; Treatment; Treatment: alkalinity, total A Large-scale mesocosm experiment was conducted in the temperate fjord ecosystem near Bergen, Norway during late spring 2022 to investigate the effects of OAE on biogeochemical processes and organisms under close-to-natural conditions. A non-CO2-equilibrated approach was chosen, simulating OAE with calcium- and silicon-based minerals. A gradient of five OAE levels was achieved by increasing total alkalinity (TA) by 0–600 µmol kg-1. Carbonate chemistry parameters were monitored for the total length of the 53-day experiment. The added TA remained relatively stable over the experimental period and the measured CO2 gas exchange rate was comparable to what would be expected for large oceanic regions. The study and data set offer insights into impacts of non-equilibrated alkalinity enhancement on the carbonate system, air-sea gas exchange and carbon fixation. |
| title | KOSMOS 2022 Bergen mesocosm study on ocean alkalinity enhancement: carbonate chemistry , CO2 flux data and calcification estimates |
| topic | Air-sea CO2 flux; Alkalinity, total; AQUACOSM-plus; Aragonite saturation state; Bicarbonate ion; calcification; Calcification, cumulative; Calcite saturation state; Calculated; Carbon, inorganic, dissolved; carbonate system; Carbon dioxide, air-sea, flux; Carbon dioxide, dissolved; Carbon dioxide, partial pressure; Coccolithophoridae, total; CTD; DATE/TIME; Day of experiment; DEPTH, water; Event label; KOSMOS; KOSMOS_2022; KOSMOS_2022_Fjord; KOSMOS_2022_Mesocosm-M1; KOSMOS_2022_Mesocosm-M10; KOSMOS_2022_Mesocosm-M2; KOSMOS_2022_Mesocosm-M3; KOSMOS_2022_Mesocosm-M4; KOSMOS_2022_Mesocosm-M5; KOSMOS_2022_Mesocosm-M6; KOSMOS_2022_Mesocosm-M7; KOSMOS_2022_Mesocosm-M8; KOSMOS_2022_Mesocosm-M9; KOSMOS Bergen; Measured; MESO; mesocosm; Mesocosm experiment; Mesocosm label; Network of Leading Ecosystem Scale Experimental AQUAtic MesoCOSM Facilities Connecting Rivers, Lakes, Estuaries and Oceans in Europe and beyond; Nitrous oxide, dissolved; ocean alkalinity enhancement; Ocean-based Negative Emission Technologies; OceanNETs; pH; Phase; Salinity; Temperature, water; Treatment; Treatment: alkalinity, total |
| url | https://doi.org/10.1594/PANGAEA.983061 |