The global ocean is losing oxygen with warming. Observations and Earth system model projections, however, suggest that this global ocean deoxygenation does not equate to a simple and systematic expansion of tropical oxygen minimum zones (OMZs). Ditkovsky and co-authors examined the OMZ response to warming in the Indian Ocean and extend the existing conceptual framework used to explain the Pacific OMZ changes  to interpret the response in the Indian Ocean. They find that the unique ocean circulation pathways of the Indian Ocean lead to an expansion–redistribution–contraction response similar to the Pacific Ocean (Busecke et al., AGU Advances 2022), but with far more prominent OMZ contraction and redistribution regimes than in the Pacific Ocean (see pink shading in Figure below).

*Ditkovsky, S.J., L. Resplandy, and J. Busecke. 2023. “Unique Ocean Circulation Pathways Reshape the Indian Ocean Oxygen Minimum Zone With Warming”. Biogeosciences 20: 4711–4736. doi:10.5194/bg-20-4711-2023.