A research vessel slipped away from Harwich International Port in Essex this week, carrying some 80 scientists and crew toward the fjords of south-east Greenland. Their six-week mission marks the first major field campaign of the GIANT project, a five-year international effort that places fresh observations at the heart of understanding one of the planet's most consequential natural systems.
The British Antarctic Survey leads the collaboration, which brings together 17 partners, seven of them from overseas. Funding comes from the Advanced Research and Invention Agency through its Forecasting Tipping Points programme, to the tune of £20 million. The goal is straightforward: measure how rapidly melting tidewater glaciers interact with the ocean, track the freshwater pouring in, and clarify what that means for Atlantic circulation patterns that shape weather across the UK and Europe.
Researchers will deploy an array of tools designed for hazardous terrain. Airborne drones will map ice fronts from above. Marine robots, including the autonomous underwater vehicle Boaty McBoatface, will probe waters too dangerous for ships when icebergs calve without warning. Satellites, moored sensors and other instruments will feed data back in real time. The 2026 work centres on glaciers near Kangerlussuaq Fjord, with a second campaign planned for Petermann Glacier in 2027.
We are in a moment where our tools have finally caught up with our questions. With autonomous vehicles, advanced sensors and powerful modelling – boosted by AI – we can explore glacier-ocean interactions in ways that were unimaginable just a few years ago.
Those are the words of Dr Kelly Hogan, marine geophysicist at the British Antarctic Survey and lead scientist on GIANT. Her team is not content to rely on predictive models in isolation. By collecting high-resolution, ground-truth measurements where glacier meets sea, the expedition aims to test and refine those models, reducing the uncertainty that has long dogged forecasts of ice-sheet behaviour.
From ice to ocean currents
The science rests on a simple physical reality. As glaciers melt, they release cold, fresh water into the fjords. This lighter water can alter density-driven circulation, potentially slowing the Atlantic Meridional Overturning Circulation and its northward extensions that moderate British climate. The GIANT project treats these processes as observable phenomena first, then seeks to improve predictions of glacier retreat and its downstream effects on ocean behaviour.
Data gathered this summer will feed directly into efforts to build a prototype early-warning system for tipping points. The approach reflects a maturing scientific philosophy: pair the best autonomous technology with sustained, careful measurement rather than leap straight to sweeping projections. Captain Matt Neill, who commands the RRS Sir David Attenborough on its first Arctic voyage in this role, captured the urgency. According to Reuters he noted that glaciers are receding very quickly and that it is even more important during these dynamic times to gather data and improve models.