Story perspectives

Warm Deep Water Shifts Poleward, Threatening Antarctic Ice Shelves

4/29/2026

Summary

Story summary

Cambridge and University of California researchers published a study showing warm circumpolar deep water has moved poleward toward Antarctica.
Using machine-learning to merge historic ship data with recent Argo floats, they created a four-decade monthly temperature record that confirms poleward expansion of warm deep water that can infiltrate beneath ice shelves.
They warn accelerated basal melting could destabilize Antarctic ice shelves, raising sea level and threatening coastal communities worldwide.

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Story summary

Cambridge and University of California researchers published a study showing warm circumpolar deep water has moved poleward toward Antarctica.
Using machine-learning to merge historic ship data with recent Argo floats, they created a four-decade monthly temperature record that confirms poleward expansion of warm deep water that can infiltrate beneath ice shelves.
They warn accelerated basal melting could destabilize Antarctic ice shelves, raising sea level and threatening coastal communities worldwide.