In a large-scale airplane campaign researchers will follow water molecules from take-off till landing.

While in most earlier climate models, the water flowing into the Nordic Seas was too cold, current models represent both the water temperature and the resulting heat transport better.

The oxygen level in the global ocean has declined, limiting the living space of fish. New research is aimed at improving future oxygen projections.

Researchers unveil a new relationship for climate models linking carbon and heat uptake with the water-column stability in the Southern Ocean.

With a new La Niña in the Pacific, colder conditions could be expected in the North Atlantic. However, in northern Europe and Russia, climate warming balances the cooling.

In the last decades, little sea ice in the Arctic in fall has been associated with cold winters in Europe. A new study signals little reason to prepare for frosty nights and heavy snow, despite less than normal ice in the north.

Have you ever wanted to go back in time? It is not so easy in the real world, but in the model world anything is possible.

Earth has been a snowball. In a new study, Heiko Goelzer and colleagues have used an Earth system model to study the transitions between a glaciated and a non-glaciated Earth, around 700 million years ago.

"The human footprint is everywhere, even on remote islands", John Birks writes about a new study of past ecology. All around the world, human arrival on islands rapidly affected the local biodiversity.

Limit global warming to 1.5°C and halve the land ice contribution to sea level this century

Injecting particles into the atmosphere would reduce the temperature increase. But for the world’s ecosystems there is no alternative to mitigation efforts.

The strongest cyclone ever recorded in the Southern Hemisphere reached its peak just as it struck Fiji in 2016. A new study looks at the role of the ocean directly underneath the cyclone.

Rainfall patterns in China over the past half a million years may have been more like the present than previously thought. Gaowen Dai writes about his new study.

Ocean currents have brought more heat into the northern seas after 2001. The northern extension of the Gulf Stream has warmed and probably also strengthened.

Cyclones in the Atlantic and Pacific Oceans are affected by the Gulf Stream and the Kuroshio. The temperature of the water below is only one of the factors controlling their development.

In 10,000 years the Greeland ice sheet will be gone, but what about Antarctica? Heiko Goelzer presents research for the coming millennia.

The ocean is a questionable babysitter. Kristine Flacké Haualand takes us to the cradle of midlatitude cyclones.

Margit Simon and her colleagues have detected anthropogenic CO2 from the 1950s and onwards in sediments from the Icelandic shelf. Here she writes about their new study.

It is far from the Arctic to Tibet. A new study shows how variations in sea ice may influence the transport of air pollution into the Tibetan Plateau.

From autumn 2021, Kerim Nisancioglu's climate and sustainability course enters a whole new campus: aboard the tall ship Statsraad Lehmkuhl, in the Caribbean. But before she sets sail, Meike Becker will install observation instruments to collect data from the sea surface all around the world.