Core Theme

 

Ocean and Climate

What is the role of the ocean in the global climate system and how can we improve predictions and scenarios?

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Core Theme

 

Marine Ecosystems and Biogeochemical Cycles

How does climate change alter marine communities and what are the consequences for humankind?

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Core Theme

 

Ocean Threats and Benefits

How can we forecast marine natural hazards and use resources from the seafloor in a responsible way?

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GEOMAR: Our World is the Ocean

GEOMAR explores the global ocean from the seafloor to the atmosphere to understand the ocean system and enable the development of sustainable solutions for pressing societal issues. Its research and its commitment to knowledge and technology transfer contribute significantly to preserving the function of the ocean and safeguarding it for future generations.

GEOMAR research covers a unique range of physical, chemical, biological and geological ocean processes. Members of the four research divisions Ocean Circulation and Climate Dynamics, Marine Biogeochemistry, Marine Ecology and Dynamics of the Ocean Floor cooperate in the three core themes Ocean and Climate, Marine Ecosystems and Biogeochemical Cycles and Ocean Threats and Benefits as well as the four Integrative Research Foci Atlantic Ocean Upwelling, Marine Carbon Sinks, Digital Twin Ocean and Metals in the Ocean. All work focuses on the open “blue” ocean.

 

GEOMAR Research News

Wave. It has white foam. On the sea.
20.01.2026

Ventilation of the North Atlantic is Weakening

Slower renewal of deep waters may signal climate change

Black-and-white photograph of an elderly man with round glasses, tousled hair and a full beard. He is wearing a checked shirt under a woollen jumper with a zipper
16.01.2026

A leading voice in interdisciplinary marine science has fallen silent

GEOMAR mourns the loss of Hans-Harald Hinrichsen (1952–2025)

A sailing boat, or rather a racing yacht, on the sea
15.01.2026

Sailboat measurements improve estimates of ocean CO2 uptake

During training cruises and regattas, sailors collect valuable data for climate research at sea

A ship is moored to the harbour wall with ropes. The sky is blue.
13.01.2026

Time series in the Mediterranean Sea

Expedition M216 investigates changes in the Mediterranean