Ocean and Climate

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

Further scientific information can be found on the pages of the Research Division 1: Ocean Circulation and Climate Dynamics.

News for research topic: "Ocean and Climate"

RV PLOARSTERN and iced sea

Variability in the Arctic Carbon Cycle

GEOMAR scientists study seasonal changes in the Arctic Ocean

Waves in the North Atlantic. Photo: Arne Körtzinger/GEOMAR

Climate predictions several years into the future?

A study from Kiel reveals potential and mechanisms

Schematic Diagram of the FOCI Model System. Graphics: C. Kersten, GEOMAR.

New opportunities for ocean and climate modelling

GEOMAR introduces flexible and modular system FOCI

Next to a mescocosmo a diver sinks in clear blue water into the depths. Photo: Michael Sswat/GEOMAR

Mobilizing the ocean for climate protection

GEOMAR coordinates research project on ocean-based negative emissions technologies

Map of the North Sea with the two dam projects. From Groeskamp / Kjellsson, 2020).

Gigantic dam to protect North Sea countries

Scientists propose damming of the North Sea

[Translate to English:] Im Miozän war die Landbrücke beim heutigen Panama noch nicht geschlossen. Relativ salzarmes Wasser aus dem Pazifik erreichte die Karibik. Das belegen zum Beispiel Untersuchungen in der Zentral-Karibik (ODP1000).  Sedimentproben, die an ODP1006 genommen wurden, zeigen jetzt aber, dass zwischen 11,5 und 9,5 Millionen Jahren vor heute dieses relativ salzarme Wasser die Karibik nicht  verließ und damit die Nordatlantische Zirkulation nicht beeinflussen konnte. Grafik: Anne Osborne/GEOMAR

Strong Gulfstream System in the Miocene does not contradict Models

Study shows separation between Caribbean and North Atlantic 10 million years ago

[Translate to English:] Korallenriffe vor der Küste der mexikanischen Halbinsel Yucatan in der Nähe von Grundwasserquellen (Ojos). Foto: Elizabeth D. Crook

Stony corals: Limits of adaption

New study on coral growth in times of climate change

[Translate to English:] Planktonische Lebensgemeinschaft. Foto: A. Stuhr, GEOMAR (CC BY 4.0)

Plankton as a climate driver instead of the sun?

A new view on past climate change

[Translate to English:] Messboje im tropischen Pazifik. Foto: NOAA/PMEL.

Tropical Pacific variability key for successful climate forecasts

Sparse data as bottleneck identified