The role of the ocean in climate change

Temperature and currents at 450 metres depth in the high resolution Kiel ocean model. (Instantaneous values). Source: A. Biastoch, GEOMAR.

The oceans play a central role in global change processes.Major aspects of climate change are associated with the ocean’s heat transport, heat capacity, and the global water cycle. However, oceanic storage, transformation, transport and exchange of radiatively and chemically active gases and particles also exert an influence on climate through their impact on atmospheric radiation transfer. Past climate change has had demonstrable influences on the isotopic and chemical composition of seawater, which permits these signals to be investigated as potential recorders of change. Since exchanges of heat and substances between the ocean, land and the atmosphere operate on time scales ranging from seasons to millennia, they are amongst the most important factors for shaping future global climate change.

Research topics under this headline include:

  • Understanding of Past, Present and Future Overturning Circulation Changes
  • Changes in the Tropics
  • Present and Past Arctic Oceanography and Climate
  • Future Greenhouse Warming: Assessment and Scenarios
  • Past Geochemical Change in the Oceans




News for topic: the role of the ocean in climate change

Cold-water coral Lophelia pertusa in Trondheim fjord (Norway). Photo: Solvin Zankl

Cold-Water Corals Document Environmental Changes

GEOMAR scientists develop new climate archive

Living foraminifera of the species Ammonia aomoriensis. The diameter of the foraminifera shown is about one quarter of a millimeter. Photo credit: K. Haynert, GEOMAR

Protected by the Seabed: Unicellular Organisms Tolerate Ocean Acidificationen

GEOMAR scientists simulate future climate scenarios

Coral in the Red Sea. Diameter of the coral is approximately five metres. Photo: Helmut Schuhmacher

Corals track strongest Indian Ocean Current over 334 years

Scientists from GEOMAR use corals as high-resolution temperature archive