Novel AI tool to help predict Arctic sea ice loss

By Laura Berrill
Improved AI predictions could underpin new early-warning systems, according to team led by BAS and Alan Turing Institute

Scientists have developed a new artificial intelligence (AI) tool that can more accurately forecast Arctic sea ice conditions months into the future. The new sea ice forecasting framework fuses data from satellite sensors with the output of climate models in ways traditional systems simply couldn't achieve.

The improved predictions could underpin new early-warning systems that protect Arctic wildlife and coastal communities from the impacts of sea ice loss, according to an international team of researchers led by British Antarctic Survey (BAS) and The Alan Turing Institute, UK.

Accurate forecasting as a result of artificial intelligence

Described in the journal Nature Communications, the AI system, IceNet, addresses the challenge of producing accurate Arctic sea ice forecasts for the season ahead – something that has eluded scientists for decades.

Sea ice is notoriously difficult to forecast because of its complex relationship with the atmosphere above and ocean below,  but IceNet is almost 95 per cent accurate in predicting whether sea ice will be present two months ahead – better than the leading physics-based model, according to the researchers.

The new sea ice forecasting framework fuses data from satellite sensors with the output of climate models in ways traditional systems simply couldn’t achieve, noted principal investigator, Scott Hosking, co-leader of the BAS AI Lab.

Technology based on deep learning

Unlike conventional forecasting systems that attempt to model the laws of physics directly, the authors designed IceNet based on a concept called deep learning. Through this approach, the model ‘learns’ how sea ice changes from thousands of years of climate simulation data, along with decades of observational data to predict the extent of Arctic sea ice months into the future.

“The Arctic is a region on the frontline of climate change and has seen substantial warming over the last 40 years,” said study lead author Tom Andersson, data scientist at the BAS AI Lab. “IceNet has the potential to fill an urgent gap in forecasting sea ice for Arctic sustainability efforts and runs thousands of times faster than traditional methods,” Andersson said.

“Now we have demonstrated that AI can accurately forecast sea ice, our next goal is to develop a daily version of the model and have it running publicly in real-time, just like weather forecasts,” Andersson said. “This could operate as an early warning systems for risks associated with rapid sea ice loss,” he added.

 

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