Southern Ocean Diatom Model Output

This archive contains output from the PISCES‑QUOTA P7Z model, which includes an explicit Southern Ocean diatom ecotype parameterised using observed photophysiological traits: a larger photosynthetic antenna, proton‑pumping rhodopsin (PPR) as an alternative energy‑generating mechanism, and enhanced photosystem repair. The version of the model used in this study is available at: https://github.com/lewiswrightson/PISCES-QUOTA-P7Z. The dataset provides model output from two forcing scenarios: Contemporary simulations (contemporary_output) IPCC RCP8.5 high‑emissions scenario (histRCP) For the RCP8.5 scenario, output is supplied for two representative 10‑year periods: 1996–2005 (historical baseline) and 2091–2100 (end‑of‑century). Each period includes both annual‑resolution output and 5‑day averaged fields. Four sensitivity experiments are included: Control – No traits enabled; Southern Ocean and Temperate diatoms are identical. Antenna – Southern Ocean diatom has an enlarged photosynthetic antenna. AntPPR – Southern Ocean diatom has a larger antenna plus proton‑pumping rhodopsin. All Traits – Southern Ocean diatom has a larger antenna, PPR, and photosystem repair capability.