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Organism adaptations to extreme Antarctic waters

A copepod (about 1 mm long) with bright red photoprotective pigmentation (carotenoids). Photo: Hans Berggren The ozone hole above Antarctica has increased considerably during the last decades, allowing higher doses of ultraviolet (UV) radiation to...

Cruise report

Interrelated biogeochemical cycles of halocarbons and mercury

Katarina Abrahamsson sampling for halocarbons at an ice station. Anna Wåhlin This project aims to determine the importance of certain greenhouse gases (i.e., halocarbons) and mercury for chemical and biological exchange processes in the cryosphere...

Cruise report

Physical oceanography

Deployment of CTD instrument for long-term measurements. Photo: Anna Wåhlin The glaciers emptying into the Amundsen Sea in West Antarctica have displayed accelerated thinning in recent decades. There are clear signs that this is caused by...

Cruise report

Implications of increasing CO2

Sea-ice and snow sampling. Photo: Agneta Fransson What is the effect of sea ice and glacial meltwater on the CO2 exchange and calcium carbonate saturation state (i.e., Ω)? We set out to investigate the mechanisms driving the CO2 air−ice−sea flux...

Cruise report

Health assessment of Antarctic seals

Weddell seal basking in the sun. Photo: Karin Hårding We have investigated the health status of three endemic seal species, i.e., the Ross, Weddell, and crabeater seals. Our main interest was to search for antibodies to canine distemper virus in...

Cruise report

The frozen Garden of Eden: on the hunt for Eocene mammals

Large Cretaceous ammonite from southern Seymour Island. Photo: Jonas Hagström. How did the paleogene mammals of the southern hemisphere evolve and spread? The record of Antarctic mammals and other terrestrial vertebrates is still very poor. New...

Cruise report

MARA: Moveable Atmospheric Radar for Antarctica

Group of snow petrels attracted by tethered sonde measurements. Photo: Maria Mihalikova Do we really understand the global circulation in the upper 60–100 km of the atmosphere? Do small-scale processes cause significant mixing of air between...

Cruise report

IceCube − the world’s biggest neutrino telescope

A Digital Optical Module (dom) going down. Photo: Klas Hultqvist. What does the dark matter in the universe consist of? There is six times as much dark matter in the universe as there is normal matter, made of atoms. Where does the very...

Cruise report

Neoproterozoic mountain building in southern and central Svalbard

Sketch reconstruction of the late Mesozoic North Atlantic Caledonides showing the Grenville–Sveconorwegian basement distribution: a) theinterpretation preferred in recent reconstructions of Rodinia; b) alternative interpretation. This project...

Cruise report

IceCube − the neutrino telescope at the South Pole

The IceCube-lab (foreground) has two stories. Cables from the detector enter through the two pillars on either side to reach the computer cluster on the upper floor. Photo: Klas Hultqvist What does the dark matter in the universe consist of? There...

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