Climate engineering by artificial ocean upwelling - channelling the sorcerer's apprentice.

Oschlies, Andreas , Pahlow, Markus, Yool, A. and Matear, R.J. (2010) Climate engineering by artificial ocean upwelling - channelling the sorcerer's apprentice. Open Access Geophysical Research Letters, 37 . L04701. DOI 10.1029/2009GL041961.

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Recent suggestions to reduce the accumulation of anthropogenic carbon dioxide in the atmosphere have included ocean fertilization by artificial upwelling. Our coupled carbon‐climate model simulations suggest that artificial upwelling may, under most optimistic assumptions, be able to sequester atmospheric CO2 at a rate of about 0.9 PgC/yr. However, the model predicts that about 80% of the carbon sequestered is stored on land, as a result of reduced respiration at lower air temperatures brought about by upwelling of cold waters. This remote and distributed carbon sequestration would make monitoring and verification particularly challenging. A second caveat predicted by our simulations is that whenever artificial upwelling is stopped, simulated surface temperatures and atmospheric CO2 concentrations rise quickly and for decades to centuries to levels even somewhat higher than experienced in a world that never engaged in artificial upwelling.

Document Type: Article
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1029/2009GL041961
ISSN: 0094-8276
Projects: Future Ocean
Date Deposited: 25 Feb 2010 14:29
Last Modified: 22 Jan 2019 10:05

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