The supervisor
Ninnemann is an isotope geochemist and paleoceanographer and leader of the Quaternary geology and Paleoclimate Group at UiB. His research interests are global ranging but are currently focused on the relationship between the circulation and biogeochemical cycling of high latitude oceans and on delineating thresholds, transitions, and rapid perturbations in ocean circulation, carbon cycling, and climate. He utilizes novel analytical approaches, interpreted in collaboration with modellers and observations of the modern ocean, to quantify the (in)stability of ocean ventilation during warm(er) climates and the impact of ocean changes on ocean biogeochemistrye.g. 1,2. Ninnemann has acted as coordinator and work package leader in large international research projects and EU projects on paleoclimate and thermohaline circulation.
The research group
The position is embedded in the Research Theme “Carbon” at the Bjerknes Centre for Climate Research, the paleoclimate group at the department of Earth Science, and the isotope laboratory FARLAB. The Bjerknes Centre is the largest climate research centre in the Nordic countries with leading mullti-disciplinary expertise and infrastructures for the quantification of biogeochemical cycling in the past, modern, and future oceans.
Available infrastructure
Access to the nationally funded stable isotope infrastructure FARLAB and the extensive analytical infrastructure facilities within the geoanalytical facility are available. Collaboration with modelers and access to model (computing and data storage) infrastructures is also possible. There are frequent seagoing opportunities on UiB’s and international research vessels, including planned expeditions within the project period.
Research possibilities for the fellow - topical frame
The postdoctoral fellow position is thematically linked to the sustainability of global ocean productivity, ventilation/oxygenation, and the carbon sink efficiency during rapid global warming. Continued ocean heat uptake and related circulation and stratification changes pose potentially significant marine environmental hazards, yet large uncertainties remain about the sensitivity of ocean ventilation, oxygenation, and the sustainability of global nutrient supply to sudden and sustained warming. The candidate will constrain these uncertainties by analysing past periods of warming and stratification and by quantifying the biogeochemical response.
Possibilities for collaboration with international research environments include (but are not limited to)
University of Southampton (UK), Rutgers University (USA), UFF (Brazil), University of Conception (Chile), University of Barcelona (Spain).
Possibilities for collaboration with other sectors
This project will produce knowledge relevant for the management of marine resources, ocean health, and ocean and ecosystem governance. Particularly relevant for National and international governing bodies on ocean management, e.g., fisheries directorates.
Potential for policy impact
The project aims to provide knowledge for policy makers on the long-term sustainability of ocean primary production, the sustainable management of marine resources, and the pathways leading to potentially dangerous ecosystem stressors and thresholds.