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Biogeochemistry

Research topics

Photo:
Jerry Tjiputra

So far, the group has worked with strong focus on marine carbon cycling (in situ observations and modelling with biogeochemical ocean general circulation models), but recently added a component on terrestrial biosphere modelling. A comprehensive marine carbon observing system was developed and is run using autonomous instruments on voluntary observing ships, time series stations (in particular at the position of weather station MIKE in the Norwegian Sea), and deep section data collected from research vessels. The group has further been deeply involved in and also led international efforts to assemble such data into quality controlled and consistent data collections with global scope. Mesocosm experiments have been carried out in order to observe the reaction of natural systems to forced environmental changes, such as the reaction of plankton to changes in ambient CO2 concentration. Biogeochemical component models were implemented and are run for the ocean and recently also for the land biosphere. These models are part of the Norwegian Earth system model NorESM. The group also carries out coupled Earth system modelling experiments with NorESM in order to quantify the biogeochemical climate feedback.

 

A selection of research topics that the Biogeochemistry group currently contributes to can be viewed via the links below. In all these fields, students that are interested in a master thesis can start on more focussed sub-topics.