CLICCS : Climate, Climatic Change, and Society : University of Hamburg

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Photo: : Christian Schwier/Adobe Stock

14 April 2025|Research

How much will the coal phase-out actually help the climate?

Germany is committed to phase out coal-fired power plants by 2038, but the actual climate effect of this policy is debated. A new study from the University of Hamburg’s Cluster of Excellence CLICCS offers surprising insights into such unilateral national approaches. The experts investigated how overlapping climate policies...

The skyline of a harbor in the evening light, the sky is red-orange. A single chimney emits smoke, the clouds of smoke drift across the sky.

Photo: M. Piwnicki / unsplash

4 March 2025|Research

Climate expertise can make a difference – in varying doses

Federal climate protection measures aren’t currently sufficient to achieve our climate targets. Voluntary climate protection can help reduce CO2 emissions. But which options are really the most effective? A study involving experts from the University of Hamburg’s Cluster of Excellence for climate research CLICCS shows that...

Photo: Michael Waibel

27 February 2025|Research

Doing nothing now will cost us more later

The Hamburg Climate Futures Outlook 2024 shows how climate change adaptation can ultimately succeed: through meticulously thought-through measures that are simultaneously climate-friendly and socially just, and which are jointly developed with the public. Beate Ratter is a Professor of Geography and one of the study’s lead...

Photo: CEN Climate Visualization Laboratory

25 February 2025|Research

Weaker ocean circulation could cost trillions

A major motor for the global climate is beginning to falter: a massive system of ocean currents called the Atlantic Meridional Overturning Circulation (AMOC), which also includes the Gulf Stream. As a new study conducted by experts at the University of Hamburg’s Cluster of Excellence for climate research CLICCS and the Max...

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Zu sehen ist ein Satellitenbild eines Küstengebietes, welches von der Nasa aufgenommen wurde.

Photo: NASA/GSFC

11 February 2025|Research

Tides reduce marine CO2 uptake

The ocean absorbs massive amounts of CO₂ from the atmosphere, helping to slow climate change. Tides have a major impact on the mixing, distribution and storage of CO2 in water, as they influence water currents and stratification alike. A team led by Dr. Jan Kossack recently calculated the tides’ influence on carbon dioxide...

Giant mounts of sea ice in the Arctic region.

Photo: UniHH/CEN/T.Wasilewski

7 February 2025|Research

By 2100: An Arctic we’ll hardly recognize

The Arctic will change dramatically. If all nations meet the climate targets they’ve agreed to, the global mean temperature will rise by 2.7 degrees by the year 2100. In a study just released in the journal Science, Prof. Julienne Stroeve from the National Snow and Ice Data Center (NSIDC) in Colorado, Prof. Dirk Notz from...

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