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

Changes of dissolved oxygen in the global ocean in percent. Graphic: GEOMAR
15.02.2017

Global Ocean De-Oxygenation Quantified

The first in-depth study on the observed global ocean oxygen content was just published by Kiel scientists in Nature.

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Simplified figure of todays global ocean overturning circulation. Surface currents in red, deep water masses in blue. The Central American landbridge, the Indonesian Throughflow and the Strait of Gibraltar (yellow rectangles) have a key function for the variability of the circulation pattern. The drill cores used in this study are marked with yellow dots. Map. NOAA:
24.01.2017

How the North Atlantic became a “heat pirate”

International research team unravels how seaways affect global climate

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14.12.2016

A small change with a large impact

Mesocosm experiment reveals how community interactions amplify the response of a calcifying phytoplankton species to ocean acidification

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