The group Marine Interfaces aims for a better understanding of biogeochemical processes in the sea surface and upper ocean, e.g. the upper 1-2 meters. The sea surfaces is in direct contact with the atmosphere, and knowledge of the chemical, biological and physical nature of the sea surface is essential

1. for a better understanding of climate-relevant air-sea interactions such as the exchange of gases, heat and particles (aerosols).
2. as an unique habitat of photochemical and microbial driven biogeochemical processes.
3. for proper interpretation of data from remote sensing systems.

The group is particularly focussed on the sea-surface microlayer (SML), natural organic films covering the ocean`s surface to a wide extent. With a typical thickness of 40-100 µm, the SML has physicochemical and biological properties that are measurably distinct from underlying waters. Because of its unique position at the air-sea interface, the SML is central to a range of global biogeochemical and climate-related processes.