Jürchott et al. (2023): Artificial Upwelling—A Refined Narrative

M. Jürchott, A. Oschlies, W. Koeve IN: Geophysical Research Letters 50 (4); https://doi.org/10.1029/2022GL101870

Artificial upwelling (AU) is a proposed marine carbon dioxide removal (CDR) method, which suggests deploying pipes in the ocean to pump deep water to the ocean’s surface. Using numerical ocean modeling and simulating almost globally applied AU between the years 2020 and 2100 under several different atmospheric CO2 emission scenarios, the authors show that AU leads under every simulated emission scenario to an additional CO2-uptake of the ocean, but the potential increases under higher emission scenarios (up to 1.01 Pg C/year (3.70 Pg CO2/year) under the high CO2-emission scenario RCP 8.5).