MOSAiC

Embark on the largest polar expedition in history: in September 2019, the German research icebreaker Polarstern set sail from Tromsø, Norway, to spend a year drifting through the Arctic Ocean - trapped in ice. The goal of the MOSAiC expedition was to take the closest look ever at the Arctic as the epicenter of global warming and to gain fundamental insights that are key to better understand global climate change. Hundreds of researchers from 20 countries were involved in this exceptional endeavour. Following in the footsteps of Fridtjof Nansen's ground-breaking expedition with his wooden sailing ship Fram in 1893-1896, the MOSAiC expedition brought a modern research icebreaker close to the north pole for a full year including for the first time in polar winter. The data gathered will be used by scientists around the globe to take climate research to a completely new level. Led by atmospheric scientist Markus Rex, and co-led by Klaus Dethloff and Matthew Shupe, MOSAiC is spearheaded by Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI).

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MOSAiC

Embark on the largest polar expedition in history: in September 2019, the German research icebreaker Polarstern will set sail from Tromsø, Norway, to spend a year drifting through the Arctic Ocean - trapped in ice.

See expedition
See science

The goal of the MOSAiC expedition is to take the closest look ever at the Arctic as the epicenter of global warming and to gain fundamental insights that are key to a better understanding of global climate change. Hundreds of researchers from 20 countries are involved in this exceptional endeavour. Following in the footsteps of Fridtjof Nansens ground-breaking expedition with his wooden sailing ship Fram in 1893-1896, the MOSAiC expedition will bring a modern research icebreaker close to the north pole for the first time in polar winter. The data gathered will be used by scientists around the globe to take climate and ecosystem research to a completely new level. Led by atmospheric scientist Markus Rex, and co-led by Klaus Dethloff and Matthew Shupe, MOSAiC is spearheaded by Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI).

May 21, 2019
Stories
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September 29, 2023
A MOSAiC publication is on the cover of Nature Geosciences

Cover reproduced with permission from Springer Nature.

October 17, 2022
Antje Boetius and Markus Rex accept Arctic Circle Prize

Alfred Wegener Institute and MOSAiC expedition receive award

October 17, 2022
New dataset reveals biological “treasure trove” of Arctic Ocean

A major new project will help benchmark biodiversity change in the Arctic Ocean and guide conservation efforts by identifying unique species and assessing their extinction risk.

April 27, 2022
MOSAiC Conference / Workshop

This week, around 200 participants in the MOSAiC project are gathering in Potsdam.

February 18, 2022
Fish and squid found in the Central Arctic Ocean

Scientists detect unexpected species under the Arctic ice

Read the MOSAiC participants' reports on the expedition

Read more about MOSAiC in international media

Expedition partners