Notes from the Field

The icebreaker made quick progress north owing to warm conditions and thin, fragmented sea ice.

MOSAiC expedition scientists returned to the Arctic sea-ice pack, greeted by a surprisingly distinct boundary between the open ocean and pack ice.

Leg 4 scientists and crew with the MOSAiC expedition have finally headed for the Arctic ice pack.

After 18 days in quarantine and multiple tests for coronavirus, leg 4 participants in the MOSAiC expedition head north to meet the RV Polarstern.

Sea ice geophysicist Melinda Webster was ready to fly to the RV Polarstern for the MOSAiC expedition. Then COVID-19 was declared a pandemic.

The curious bear served as a gentle reminder to stay alert while on the ice.

Each week, 10 scientists with the MOSAiC expedition drill ice cores for a variety of experiments back on the ship. Here’s what the day looks like.

Using a helicopter, a laser, and precise GPS coordinates, MOSAiC expedition scientists made measurements that will help validate sea ice data collected by NASA’s ICESat-2 satellite.

After cracks formed in the sea ice, the MOSAiC expedition team decided to move instruments to safer location.