Physical, chemical and biological data generated for the project DEEPROSSS (DEEP ROSS Sea ecosystem functioning: new insights on the role of ventilation on microbial metabolism and diversity); Ross Sea, austral summer 2013-2014 ...

• Main Authors: Ingrosso , Gianmarco, GIANI, Michele, Kralj, Martina, Comici, Cinzia, Rivaro, Paola, Budillon, Giorgio, Castagno, Pasquale, Zoccarato, Luca, Celussi, Mauro
• Format: Dataset
• Language: unknown
• Published: National Institute of Oceanography and Applied Geophysics 2022
• Subjects: FOS Natural sciences; FOS Earth and related environmental sciences; Antarctic; The Antarctic; Austral; Ross Sea; Antarc*; Ocean acidification
• Online Access: https://dx.doi.org/10.13120/cfeaa3ca-2b9c-445f-be27-a74e346026ba; https://nodc.ogs.it/catalogs/doidetails?doi=10.13120/cfeaa3ca-2b9c-445f-be27-a74e346026ba

The Antarctic continental shelf is known as a critical anthropogenic CO2 (Cant) sink due to its cold waters, high primary productivity, and unique circulation which allow it to sequester large amounts of organic and inorganic carbon into the deep ocean. However, climate change is currently causing significant alteration to the Antarctic marine carbon cycle with unknown consequences on the Cant uptake capacity, making model-based estimates of future ocean acidification of polar regions highly uncertain. Here, we investigated the marine carbonate system in the Ross Sea in order to assess the current anthropogenic carbon content and how physical-biological processes can control the Cant sequestration along the shelf-slope continuum. Winter Water mass generated from convective events was characterized by high Cant level (28 µmol kg-1) as a consequence of the mixed layer break-up during colds season, whereas old and less ventilated Circumpolar Deep Water entering in the Ross Sea revealed very scarce contribution ...