Imagine vast, unseen storms raging beneath the Antarctic ice, silently eroding the frozen giants that hold back the seas. This is exactly what scientists have discovered, and it’s far more alarming than it sounds. Researchers from the University of California, Irvine, and NASA’s Jet Propulsion Laboratory have uncovered stormlike circulation patterns beneath Antarctic ice shelves, driving rapid melting with profound implications for global sea level rise. But here’s where it gets even more unsettling: these aren’t your typical storms—they’re subsurface phenomena, invisible to the naked eye, yet powerful enough to reshape our planet’s future.
In a groundbreaking study published in Nature Geoscience, the team reveals that these ‘ocean storms’ operate on a timescale of just days, rather than seasons or years. This unprecedented focus allowed them to link these events directly to intense melting at Thwaites Glacier and Pine Island Glacier in the Amundsen Sea Embayment, a region already under siege from climate change. By combining advanced climate simulation models and high-resolution observation tools, the researchers captured submesoscale ocean features—tiny by oceanic standards, yet colossal in impact—that span just 1 to 10 kilometers.
‘Just as hurricanes devastate coastal communities, these submesoscale features infiltrate the cavities beneath ice shelves, melting them from below,’ explains lead author Mattia Poinelli, a postdoctoral scholar at UC Irvine and NASA JPL affiliate. ‘These processes are relentless, occurring year-round in the Amundsen Sea Embayment, and they’re a major driver of submarine melting.’ But here’s the part most people miss: Poinelli and his team identified a vicious cycle. More ice melt creates more ocean turbulence, which in turn accelerates further melting. It’s a feedback loop that amplifies the problem exponentially.
These stormlike features don’t just chip away at the ice—they can triple melting rates within hours during extreme events. Even more startling, they account for nearly 20% of total submarine melt variance over an entire season. Observational data from moorings and floats in Antarctica confirm these findings, showing intermittent spikes in warmth and salinity at depths that mirror the study’s predictions. And this is where it gets controversial: Could these submesoscale storms become even more frequent and intense as oceans warm and sea ice coverage declines? If so, the stability of ice shelves—and the pace of global sea level rise—could be far more precarious than current models suggest.
The Amundsen Sea Embayment, particularly the region between the Crosson and Thwaites ice shelves, is a hotspot for this activity. The unique topography of the area, including the shallow seafloor and the floating ice tongue of Thwaites Glacier, acts as a catalyst for these storms, making it especially vulnerable. If the West Antarctic Ice Sheet were to collapse, global sea levels could rise by up to 3 meters—a catastrophic scenario that these findings bring closer to reality.
‘These submesoscale features, often overlooked in ice-ocean interaction studies, are among the primary drivers of ice loss,’ Poinelli emphasizes. ‘We urgently need to integrate these short-term, weatherlike processes into climate models for more accurate sea level rise projections.’ Co-author Yoshihiro Nakayama adds, ‘Our models now match the data so closely that we can confidently say these are storms hitting and melting the ice. The next step is to predict how they’ll evolve in a warming world.’
Eric Rignot, a UC Irvine professor who advised the team, underscores the need for advanced observation tools, including oceangoing robots, to monitor these suboceanic processes. ‘This study isn’t just a scientific breakthrough—it’s a call to action,’ he says. With funding from NASA’s Cryospheric Sciences Program, the research highlights the critical role of technology in understanding—and potentially mitigating—this hidden threat.
Here’s the burning question: Are we underestimating the speed at which Antarctic ice is disappearing? And if so, what does this mean for coastal communities worldwide? Share your thoughts in the comments—this is a conversation we can’t afford to ignore.
