This repository contains raw data from flow cytometry, diagnostic pigments, and particulate organic carbon and nitrogen analyses, collected during phytoplankton incubation experiments in the Southern Ocean in February 2022 (Indian section). One incubation was conducted in the Polar Frontal Zone and the other in a High-Nutrient, Low-Chlorophyll (HNLC) region. These experiments were carried out under various treatments, including the addition of Patagonian dust, warming, and acidification.