Center for Marine Environmental Sciences

Media Releases 2023

Showing 1-8 of 24 items.

Planktonic foraminifera are microorganisms that live in the uppermost water layers of all oceans. When they die their small calcareous shells sink to the seafloor and remain preserved in the sediments there. The fossil foraminifera document the conditions in the oceans and their study enables a view into the past. Photo: MARUM – Center for Marine Environmental Sciences, University of Bremen; M. Kucera

Dec 5, 2023

Why regional differences in global warming are critical

Tiny fossils in marine sediments verify that climate models provide accurate calculations of average ocean temperatures during the last glacial maximum ...

Analyzed sediment core from the Caribbean Sea. The inset shows a foraminifera species called Globigerinoides ruber (white), which was extracted from the sediment samples and used to reconstruct past changes in tropical temperature and salinity. Photo: A. Zhuravleva and T. Boeschen, GEOMAR

Nov 3, 2023

How salt from the Caribbean affects our climate

Past cold periods such as the Little Ice Age were associated with reduced strength of North Atlantic currents and increased surface salinity in the ...

Bronwen Konecky at Washington University in St. Louis (far right) examines a core of lake sediment from Lake Sibinacocha, Peru. Photo: Thomas Malkowicz, Washington University in St. Louis

Nov 2, 2023

Study links changes in global water cycle to higher temperatures

It’s a multi-billion dollar question: What will happen to water as temperatures continue to rise? There will be winners and losers with any change that ...

An international team of scientists studied the natural multi-centennial climate variability between 23,000 and 19,000 years ago; climate model and paleo data show that this variability was particularly pronounced in the subpolar North Atlantic. The photo shows sea ice in the Arctic Ocean. Photo: MARUM – Center for Marine Environmental Sciences, University of Bremen; V. Diekamp

Nov 2, 2023

How a climate model can illustrate and explain ice-age climate variability

During the last ice age, the last glacial maximum about 20,000 years ago, the climate in the North Atlantic underwent much greater multi-centennial ...

Close-up picture of a core sample: The oldest samples are drill core samples from the 1.6-billion-year-old McArthur Basin in Northern Australia. This is among the oldest biomarker samples known to date and contains the information about primary production by photosynthetic organisms at that time. Photo: MARUM – Center for Marine Environmental Sciences, University of Bremen, B. Nettersheim

Oct 26, 2023

Genetic methods enable the use of fossil lipids as biomarkers for oxygen-producing primordial bacteria

Cyanobacteria are a key species in Earth's history, as they introduced atmospheric oxygen for the first time. The analysis of their evolution therefore ...

Three reasons to rejoice: Bremen researchers Kai-Uwe Hinrichs, Wolfgang Bach and Gerrit Lohmann (from left) have now been awarded three prestigious Synergy Grants from the European Research Council. This means that around 8.5 million euros in funding will go to Bremen. Photo composition: MARUM, private; Aaron Röhler; AWI

Oct 26, 2023

Bremen Climate and Marine Sciences Achieve Triple Excellence Status in Europe

Historical success at the University of Bremen: For the first time, three projects were awarded the renowned Synergy Grant of the European Research ...

An acoustic current meter, built into a mooring buoy being prepared for deployment in the Atlantic. The ocean current is measured with these instruments. Photo: MARUM – Center for Marine Environmental Sciences, University of Bremen, D. Kieke

Oct 12, 2023

Long-term study on the heat pump in the North Atlantic

Researchers from the University of Bremen and the Federal Maritime and Hydrographic Agency have compared long-term data on the Atlantic Meridional ...

In the 6x11 meter flume tank, an artificial continental slope was recreated by hand. The circular photo shows first author Henriette Wilckens forming the slope from sediment. The water-filled tank can be seen in the background. Photo montage: MARUM – Center for Marine Environmental Sciences, University of Bremen, E. Miramontes

Oct 6, 2023

Deciphering the intensity of past ocean currents

Ocean currents determine the structure of the deep-sea ocean floor and the transport of sediments, organic carbon, nutrients and pollutants. In flume-tank ...