Scientists Attempt to Refreeze Arctic Ice in Bold Climate Experiment

The Arctic Refreeze Initiative

Speeding across rapidly melting Arctic ice on a snowmobile provides a vivid feel for its beauty and fragility. The brilliant white landscape gleams ahead, while the sky blue pools of meltwater jetted up on to boots. This was the scene in Cambridge Bay in northern Canada at the start of this month, where temperatures were 5-10°C above normal, kickstarting the melting almost overnight.

Despite these challenging conditions, scientists are pursuing an ambitious solution: refreezing the Arctic sea ice. This bold attempt to combat climate change represents one of the most innovative geoengineering projects currently being explored.

The Real Ice Project Methodology

In Cambridge Bay, researchers from the Real Ice project braved temperatures of -40°C to drill small holes in the sea ice and then pump ocean water up onto its surface. That water froze almost immediately and thickened the ice by about 50cm. When visited, the 450 metre by 450 metre area they worked on was clearly melting more slowly, forming a sparkling white island in a growing sea of blue.

The project has already demonstrated its core principle: that pumping seawater onto existing ice during extreme cold can thicken it. The next phase will involve using underwater drones, already tested in prototype off Finland, to make the holes in the ice with a heated probe, potentially making the process more efficient and scalable.

The Climate Impact Analysis

Global heating has destroyed about 40% of the Arctic's summer sea ice in the last 45 years, perhaps the most visible impact of the climate crisis. The ice reflects the sun's heat 10 times better than the dark sea below, so losing it creates a vicious circle of melting and heating that accelerates global warming.

The Real Ice project aims to break this cycle by preserving thicker ice that reflects more sunlight back to space. While the Arctic is vast—millions of square kilometers of ice have been lost, with another 80,000 square kilometers of summer sea ice disappearing every year—the project represents a potential emergency brake on this process.

The Financial Considerations

Funding for the Real Ice project comes from a £3.5m grant from the UK government, but researchers estimate that scaling up the approach to halt the annual shrinking of Arctic sea ice could cost around $10bn over the longer term. This substantial amount must be considered in context: it represents the same amount as the windfall profits made by the top 100 oil companies in less than a fortnight after the Iran war sent oil prices soaring.

For further perspective, a single extreme weather disaster, the 2025 Los Angeles wildfire supercharged by the climate crisis, caused $60bn in damage. The cost of inaction on Arctic ice loss may ultimately far exceed the investment required to address it.

The Future Outlook

The Real Ice project is currently in its research phase, focused on determining both the technical feasibility and longer-term impacts on temperatures and wildlife. Crucially, the expertise of local Inuit people, who depend on the sea ice for transport and hunting, has been integrated into the project—they helped set up the experiment and continue to work on it.

While geoengineering remains controversial, with some polar scientists strongly criticizing the idea of refreezing Arctic sea ice as unfeasible and environmentally dangerous, the Real Ice team emphasizes that this is not a rollout of a huge programme but rather a research project attempting to answer key questions. With climate damage already intensifying globally, exploring every option has become increasingly necessary.