Nagwekar et al. (2024): Ocean Alkalinity Enhancement in Deep Water Formation Regions Under Low and High Emission Pathways
Tanvi Nagwekar, Cara Nissen, Judith Hauck IN: Earth’s Future, https://doi.org/10.1029/2023EF004213
As subduction regions play a pivotal role for anthropogenic carbon uptake and centennial storage, the authors here evaluate OAE efficiencies in the subduction regions of the Southern Ocean, the Northwest Atlantic, and the Norwegian-Barents Sea region. Using the ocean biogeochemistry model FESOM2.1-REcoM3, they simulate continuous OAE globally and in the subduction regions under high (SSP3-7.0) and low (SSP1-2.6) emission scenarios. The OAE efficiency calculated by two different metrics is higher (by 8%–30%) for SSP3-7.0 than for SSP1-2.6 due to a lower buffer factor in a high-CO2 world.