Our group is part of a 100-strong expedition half of them scientists, half ship's crew that set out from the Norwegian harbour of Troms in early August 2023 to investigate the rapid melting of the Arctic sea ice.
Next to a hole we have just drilled through 1.4 metres of ice, Morten Iversen, who studies the flow of carbon around the ocean, has attached several plastic containers to a rope secured by ice screws. They will be left hanging in the water under the ice for a day to catch marine snow clumps of dead algae and zooplankton faeces that sink from the upper ocean to the deep sea.
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