Full Breakdown
Scientists Test Geoengineering Concepts to Slow Glacier Melt
8/18/2026, 4:17:15 AM
Core Expedition: Fieldwork on Jakobshavn and Thwaites Glaciers
Mathematician and climate researcher David Holland of New York University, together with his wife and Holland Lab Director Denise Holland, have established field camps on Greenland’s Jakobshavn Glacier and on the Antarctic Thwaites Glacier. Their goal is to gather synchronized measurements—radar, seismic sensors, drones, weather stations and satellite data—to improve forecasts of how quickly these glaciers will contribute to sea-level rise.
Scientific Rationale and Proposed Geoengineering Ideas
The teams are evaluating whether large-scale engineering could slow melt. One concept under study is an “underwater barrier” or sea curtain that would block warm, salty water from reaching the glacier’s grounding line. Holland describes the idea as a data-driven feasibility test rather than a finished solution. Other proposals mentioned by the researchers include draining sub-glacial meltwater, artificially thickening sea ice, injecting reflective aerosols, and spreading reflective material on snow and ice.
Data and Measurements Collected
Jakobshavn moves at a peak flow of roughly 150 feet per day, making it one of the fastest glaciers on Earth. At Thwaites, ice thickness is decreasing by about 300 feet per year, and the glacier holds enough ice to raise global sea levels by up to 10 feet if fully melted. The undersea canyon that funnels warm water toward Thwaites is nearly 60 miles wide. Robotic moorings being deployed will continuously record water temperature, depth and current strength within this canyon.
Criticism and Feasibility Concerns
Marine scientist Rob Larter of the British Antarctic Survey calls the sea-curtain and related geoengineering ideas “very impractical.” He argues that the proposals fail basic feasibility tests, pose potential ecological risks, and would be difficult to govern in a geopolitically complex world. Larter’s assessment reflects broader skepticism among glaciologists about the near-term applicability of such interventions.
Potential Implications for Sea-Level Rise
Without the detailed data being collected, the scientific community lacks the empirical basis to evaluate whether any engineering solution could meaningfully stabilize these glaciers. Holland notes that even a successful barrier would not halt retreat if atmospheric warming continues, underscoring that geoengineering, if viable, would need to complement aggressive reductions in fossil-fuel emissions. The research therefore aims to inform future decisions about whether large-scale interventions could become part of a broader climate-response strategy.
