3-7 September 2018
Audimax | Kiel University
Europe/Berlin timezone

Impact of anthropogenic atmospheric nutrient deposition on ocean deoxygenation and benthic nutrient fluxes

Not scheduled
Audimax | Kiel University

Audimax | Kiel University

Christian-Albrechts-Platz 2 | 24118 Kiel | GERMANY
Poster 10 Biogeochemical Cycles: Feedbacks and Interactions


Dr Christopher Somes (GEOMAR Helmholtz Centre for Ocean Research Kiel)


Most global IPCC climate-biogeochemical models underestimate global deoxygenation by a factor of ~2, but have not yet included anthropogenic impacts of atmospheric nutrient deposition. Here we use the UVic Earth System Climate Model of intermediate complexity to assess the importance of anthropogenic nutrient deposition on ocean deoxygenation. Future climate scenario simulations with and without anthropogenic nutrient deposition are tested in the model. Preliminary results suggest that anthropogenic nutrient deposition may be responsible for a significant amount of current ocean deoxygenation. Sensitivity simulations show the large uncertainty associated with assumptions for atmospheric iron solubility and feedbacks with sedimentary iron fluxes.

Affiliation GEOMAR Helmholtz Centre for Ocean Research Kiel
Email Address csomes@geomar.de
Are you a SFB 754 / Future Ocean member? Yes
Position Postdoc

Primary authors

Dr Christopher Somes (GEOMAR Helmholtz Centre for Ocean Research Kiel) Dr Angela Landolfi (GEOMAR, Biogeochemical Modelling) Wolfgang Koeve (GEOMAR, Biogeochemical Modelling) Prof. Andreas Oschlies (Helmholtz-Zentrum für Ozeanforschung Kiel (GEOMAR))

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