WP 5: Sea ice and carbon exchange dynamics.
Understanding the CO2 exchange between atmosphere, ocean and land is crucial since global marine and terrestrial systems currently absorb about half of the CO2 emitted by fossil-fuel combustion . The role of ice-covered oceans in the CO2 balance has been largely ignored because continuous sea-ice cover is assumed to impede gaseous exchange with the atmosphere so efficiently that no global models include CO2 exchange over sea ice. Our work package deals with measurements and modelling of the CO2 transfer between the air - sea ice - ocean interfaces. This includes the study of biogeochemical processes in sea ice brines, ikaite dynamics, and the rejection of CO2 to the underlying water.
Creating experimental conditions for the study of CO2 fluxes in new sea ice.