Surface ocean temperature, salinity, dissolved macronutrients, oxygen isotopes, and silicon isotopes of seawater around giant icebergs A-76A and A-23A in 2023

Samples of surface seawater were collected around giant icebergs A-76A (on cruise DY158) and A-23A (on cruise SD033) via the underway uncontaminated seawater systems on the RRS Discovery and RRS Sir David Attenborough respectively. Samples were collected with the motivation of identifying the biogeochemical impact of giant iceberg passage on the surrounding surface ocean. Data was collected via sensors of the uncontaminated seawater system for temperature, salinity, and chlorophyll-a concentration. Samples were taken for lab analysis upon return to the UK for dissolved macronutrients (nitrate, nitrite, phosphate, silicic acid), oxygen isotopes, and dissolved silicon isotopes. Funding has been provided by National Environment Research Council via:- C-CLEAR Doctoral Training Partnership (NE/S007164/1)- BIOPOLE (NE/W004933)- SiCLING (NE/X014819)