The role of the ocean in climate change

Ocean circulation and climate

Background

The ocean is one of the important drivers of global as well as regional climate change, on timescales ranging from months to millennia. Understanding the climate of the past and its changes or predicting the climate of the future requires a deep understanding of the physical, chemical and biological processes in the ocean. Changes in ocean currents, for example, can influence the occurrence of extreme natural events such as storms and heavy precipitation. On the other hand, anthropogenic climate warming caused by humans has a direct influence on sea levels and thus on coastal erosion. The absorption of carbon dioxide (CO2) through the ocean also causes ocean acidification. All of this stresses marine ecosystems such as tropical coral reefs.

Oceanographic climate research has made important progress in recent years. In particular, large-scale national and international projects have contributed to a better understanding of the role of the oceans in global climate processes.

The Ocean Circulation & Climate Strategy Group is a joint initiative of the German Climate Consortium and KDM. The group addresses research priorities to better understand the interaction of ocean circulation and climate change.

Surveying the Atlantic

New brochure

Climate and ocean circulation

More on the state of research

Gulf Stream circulation

Facts and backgrounds

All publications of the Strategy Group

Further information on climate and ocean circulation

Members

Prof. Dr Peter Brandt

GEOMAR | Helmholtz Centre for Ocean Research Kiel

Prof Dr Eleanor Frajka-Williams

University of Hamburg | CEN Centre for Earth System Research & Sustainability

I study ocean currents, how they react to climate change and how they drive climate change. For example, I study how the Gulf Stream and the ocean transport system distribute heat around the Atlantic. I'm also interested in how ocean currents change due to the increase in freshwater as the climate warms and the polar ice caps melt.

Dr Matthias Gröger

Institute for Baltic Sea Research Warnemünde

Research interests:

  • Marine climate and extreme conditions in the Baltic Sea
  • Effect of the Paris climate targets on regional climate change in the Baltic Sea region
  • Climate change in marginal seas
  • Quantification of uncertainties in climate ensemble simulations
Matthias Gröger completed his doctorate in 2002 on the deep water circulation in the tropical Atlantic on (sub-)orbital time scales. He then developed global and regional Earth system models in international teams in order to understand climate change in the past and project future changes.
Since 2019, he has been investigating at the IOW how climate change influences extreme conditions in Europe and the Baltic Sea region. To this end, he analyses patterns in the air pressure and wind systems over the North Atlantic and Europe in order to identify risk weather conditions for certain extremes such as marine heat waves or heavy precipitation. To find out how these weather patterns and extreme conditions could change in the future, he analyses climate scenarios from the internationally coordinated Coupled Model Intercomparison Project. He uses the results to derive potential abiotic stress factors on the marine ecosystem and estimate the resulting changes.

Prof. Dr Thomas Jung

Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven

Prof. Dr Torsten Kanzow

Alfred Wegener Institute | Helmholtz Centre for Polar and Marine Research, Bremerhaven

PD Dr Joke Lübbecke

GEOMAR | Helmholtz Centre for Ocean Research

Dr Ralf Schiebel

Max Planck Institute for Chemistry | Micropalaeontology

 

 

Prof. Dr Michael Schulz

MARUM Centre for Marine Environmental Sciences, University of Bremen

Alumni

Prof. Dr Mojib Latif

GEOMAR | Helmholtz Centre for Ocean Research Kiel

Prof. Dr Monika Rhein

Institute for Environmental Physics | University of Bremen

Prof. Dr Detlef Stammer

CEN | Centre for Earth System Research and Sustainability at the University of Hamburg

Prof. Dr Martin Visbeck

GEOMAR | Helmholtz Centre for Ocean Research Kiel

Prof. Dr Jin-Song von Storch

Max Planck Institute for Meteorology, Hamburg