Marine N inventory sensitivity to atmospheric N deposition.

Landolfi, Angela , Somes, Christopher J. , Zamora, Lauren, Koeve, Wolfgang and Oschlies, Andreas (2015) Marine N inventory sensitivity to atmospheric N deposition. [Poster] In: EGU General Assembly 2015. , 12.–17.04.2015 , Vienna, Austria . Geophysical Research Abstracts, 17 (EGU2015-12648).

Full text not available from this repository.

Abstract

The marine inventory of fixed nitrogen (N), an essential nutrient controlling productivity, is determined by the balance between N2 fixation by cyanobacteria and N-loss via microbially-mediated processes under low oxygen conditions. Human-driven perturbations of ocean temperature and atmospheric N deposition impact on the magnitude of N-loss and N-gain with potential effects on oceanic N2O emissions. However, the timescale and the net effect of these changes on the N inventory is not known. This is particularly so since the degree of coupling between the major source and sink of N is debated and the sign of the feedbacks among these two opposite processes is not well defined. Here we use a global biogeochemical model to investigate how projected changes in ocean warming and atmospheric N deposition may impact the marine N inventory and affect future N2O emissions.

Document Type: Conference or Workshop Item (Poster)
Research affiliation: OceanRep > SFB 754
OceanRep > SFB 754 > B1
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
OceanRep > The Future Ocean - Cluster of Excellence
Projects: SOPRAN, SFB754, Future Ocean
Date Deposited: 16 Dec 2015 08:41
Last Modified: 23 Sep 2019 23:29
URI: http://oceanrep.geomar.de/id/eprint/30609

Actions (login required)

View Item View Item