Spatial Variability of δ13CDIC, hydrographic and biogeochemistry variables along the Bransfield Strait (Antarctica) during 2023 austral summer

The stable carbon isotopes of dissolved inorganic carbon (δ13CDIC), hydrographic, and biogeochemistry data were investigated in the study region during comprehensive sampling in 2023 along the major ocean basins. This was the first time that the δ13CDIC was investigated in the study region, and is of great importance for Antarctic science. This dataset expands oceanographic knowledge of the Bransfield Strait, an area of the Southern Ocean closely linked to global climate variations. This dataset is correlated with the paper "Controls on the spatial variability of δ13CDIC along the Bransfield Strait during austral summer" (https://doi.org/10.1007/s10533-025-01226-7).