Articles | Volume 20, issue 23
https://doi.org/10.5194/bg-20-4711-2023
https://doi.org/10.5194/bg-20-4711-2023
Research article
 | 
29 Nov 2023
Research article |  | 29 Nov 2023

Unique ocean circulation pathways reshape the Indian Ocean oxygen minimum zone with warming

Sam Ditkovsky, Laure Resplandy, and Julius Busecke

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Cited articles

Abernathey, R. P., Busecke, J. J. M., Smith, T. A., Deauna, J. D., Banihirwe, A., Nicholas, T., Fernandes, F., James, B., Dussin, R., Cherian, D. A., Caneill, R., Sinha, A., Uieda, L., Rath, W., Balwada, D., Constantinou, N. C., Ponte, A., Zhou, Y., Uchida, T., and Thielen, J.: xgcm, Zenodo [code], https://doi.org/10.5281/zenodo.7348619, 2022. a
Al Azhar, M., Lachkar, Z., Lévy, M., and Smith, S.: Oxygen minimum zone contrasts between the Arabian Sea and the Bay of Bengal implied by differences in remineralization depth, Geophys. Res. Lett., 44, 11–106, 2017. a
Al-Yamani, F., Yamamoto, T., Al-Said, T., and Alghunaim, A.: Dynamic hydrographic variations in northwestern Arabian Gulf over the past three decades: Temporal shifts and trends derived from long-term monitoring data, Mar. Pollut. Bull., 122, 488–499, 2017. a
Auderset, A., Moretti, S., Taphorn, B., Ebner, P.-R., Kast, E., Wang, X. T., Schiebel, R., Sigman, D. M., Haug, G. H., and Martínez-García, A.: Enhanced ocean oxygenation during Cenozoic warm periods, Nature, 609, 77–82, 2022. a, b
Bakker, P., Schmittner, A., Lenaerts, J., Abe-Ouchi, A., Bi, D., van den Broeke, M., Chan, W.-L., Hu, A., Beadling, R., Marsland, S., and Mernild, S. H.: Fate of the Atlantic Meridional Overturning Circulation: Strong decline under continued warming and Greenland melting, Geophys. Res. Lett., 43, 12–252, 2016. a, b
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The global ocean is losing oxygen due to warming. The Indian Ocean, however, is gaining oxygen in large parts of the basin, and its naturally occurring oxygen minimum zone is not expanding. This rather unexpected response is explained by the unique ocean circulation of the Indian Ocean, which is bounded by a continent to the north but connected to the Pacific Ocean by the Indonesian Throughflow.
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