Science, Space and Technology News 2024
Recent research indicates that while sea ice in the Arctic Ocean is currently speeding up due to warming temperatures and thinning ice, climate models predict a slowdown during the summer months in the coming decades. This dynamic has significant implications for marine transportation safety, the wellbeing of Indigenous communities, ecosystems, and the global climate system.
“Understanding how sea ice motion is going to change is clearly of interest, and yet we didn’t really know if what the models were projecting was reasonable,” says Tandon, who is also with the Centre for Research in Earth and Space Science at York University. “It seems that we can expect sea ice to continue to speed up for some time, but there will be a point in the coming decades when the dynamics will shift.
“As ice enters what they call a free drift state, the internal stress becomes negligible, and the external forces of wind and the ocean surface tilt start to dominate. The models suggest that changes in the wind and ocean surface tilt will drive a slowdown of the sea ice during the summer season.”
France Dernières Nouvelles, France Actualités
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