Articles tagged with Ice Sheets
Researchers at the University of Arizona used drones equipped with ground-penetrating radar to map the thickness of rocky debris covering glaciers on Earth. The technology could help future astronauts locate accessible water locked in buried ice on Mars.
Simulations suggest Greenland ice sheet changed in response to atmospheric CO2 scenarios and orbital forcing, with increased dynamical instability after expansion. The results imply that other factors, such as Antarctic ice changes and ocean processes, are needed to fully explain the persistence of certain climate cycles.
Researchers found that the 40,000-year obliquity cycle influenced ocean productivity in subtropical latitudes about 34 million years ago. The study used chemical signals preserved in ocean sediment to reconstruct past biological productivity and showed a strong influence of the Antarctic ice sheet on subtropical marine ecosystems.
A 30-year study reveals 77% of Antarctica's coastline remains stable, but vulnerable sectors lose 5,000 sq mi of ice equivalent to 10 cities the size of LA every three years. Researchers use satellite data to measure glaciers and grounding lines, providing crucial benchmarks for ice sheet models and mass balance assessments.
Researchers found a surprising correlation between West Antarctic Ice Sheet retreat and marine algae growth over the past 500,000 years. The study suggests that global warming may lead to reduced CO2 uptake if the ice sheet continues to shrink.
New research reveals how warmer ocean currents triggered the large-scale retreat of the Northeast Greenland Ice Stream, a critical sector of the Greenland Ice Sheet. The study found that when an ice stream's grounding line is exposed to warm ocean water, it becomes vulnerable to retreat and collapse.
The Alps are expected to reach a peak loss rate of 2,000-4,000 glaciers per year by 2033-2041, with only 110 glaciers remaining in Central Europe by 2100. Regions like the Rocky Mountains and Andes will also experience significant glacier losses.
A University of Houston scientist teams with international partners to map Antarctica's glaciers, revealing tidal movements and retreat rates up to 700 meters per year. The dataset provides the most detailed view yet of how glaciers interact with the ocean, enabling better understanding and modeling of sea-level rise.
Research reveals that early Holocene ice-shelf retreat in East Antarctica was driven by oceanic forcing enhanced by meltwater discharge from neighboring regions. This self-reinforcing feedback loop accelerated inland ice loss, indicating that Antarctic ice retreat can propagate across multiple sectors through oceanic connections.
A team of researchers, including URI climate scientist Ambarish Karmalkar, used interactive modeling to predict the impact of Antarctic ice sheet meltwater discharge on climate and sea levels. Their findings show that while cold Antarctic meltwater will slow human-induced warming, it also causes uneven sea level rise and significant cl...
A landmark study by Swansea University reveals the Hektoria Glacier lost nearly half its length in two months during 2023, a pace similar to the end of the last ice age. The rapid retreat was boosted by the shape of the land beneath it, leading scientists to identify vulnerable glaciers and prioritize their monitoring.
Scientists will study moisture-driven mechanisms of ice sheet growth during the Miocene Climatic Optimum, a warmer climate period. The team aims to understand how increased moisture transport affects ice accumulation and mitigate sea level rise.
Researchers used airborne radar to map an unexplored region in East Antarctica, discovering a subglacial sedimentary basin. The basal unit, a layer of ice, carried small amounts of material from a mountain range and left behind sediment, forming a novel kind of basin.
The Swiss Alps have experienced its fourth greatest shrinkage of glacier ice since 2003, with over 1,000 small glaciers disappearing since 2015. The rapid melting was driven by low snowfall and record-breaking heatwaves in June 2025.
Researchers found that northerly winds exacerbate ice loss in Antarctica by capping off polynyas, reducing ocean heat loss. This mechanism could be connected to human-induced climate change and potentially mitigated by reducing greenhouse gas emissions.
A 30-year study reveals East Antarctica's interior is warming at a rate of 0.45-0.72°C per decade, faster than global average, driven by changes in the Southern Indian Ocean. This warming process may underestimate future Antarctic ice loss predictions.
Researchers used fiber-optic technology to measure how falling ice drives glacial retreat in Greenland. The impact of warming seawater on glacier melting and erosion was found to amplify calving and mass loss.
Researchers used a fiber-optic cable to capture calving dynamics across the fjord of a South Greenland glacier, documenting a 'crazy calving multiplier effect' that accelerates glacial mass loss. The data provides a deeper look at the relationship between ice and water, shedding light on the consequences of continued mass loss.
A recent study in Nature Geoscience offers important new insights into the hidden role of ancient groundwater beneath the ocean floor. Researchers found that fossil groundwater changed its composition after the retreat of the Fennoscandian ice sheet, becoming vulnerable to mixing with seawater.
A new Antarctic research project is using citizen science to study environmental changes over the last 70 years by matching modern satellite images with historical air photos. The project aims to create a high-quality dataset for future scientific investigations of Antarctic landscape change.
Researchers discovered an 85m-deep crater and 90 million cubic metres of water flooded out of a subglacial lake, fracturing the ice above and creating a massive flood. The study highlights the need to better understand how often subglacial lakes drain and their impact on the surrounding ice sheet.
Researchers have found extensive, previously unmapped flat surfaces beneath a 3,500 km stretch of the East Antarctic coastline, which were formed by large rivers after East Antarctica and Australia broke apart. These surfaces may currently be regulating the rate of ice loss from the East Antarctic Ice Sheet.
Researchers found that thick ice cover suppressed volcanic eruptions, but as glacial ice melts, pressure builds and magma is released, leading to more frequent and explosive eruptions. This phenomenon could occur worldwide, including Antarctica, and may have global climate impacts, including long-term warming.
Researchers at the University of Copenhagen analyzed old aerial photos to better understand mechanisms behind Antarctic ice shelf collapse. The study reveals that rising sea temperatures are a primary driver of collapse, contradicting previous assumptions.
A new study published in Science finds that strong climate policy can preserve twice as much ice as current warming trajectories, even if temperatures stabilized today. At a 1.5°C temperature increase, 53% of global glacier mass could be preserved, alleviating hazards like flooding and freshwater deficiency.
A new study suggests that limiting global temperature increase to 1.5°C may not be enough to save the world's ice sheets, which could lead to significant losses and extensive displacement of coastal populations. The researchers argue that a target of around 1°C would be more effective in preventing rapid sea level rise.
A team of researchers developed the first global machine learning model to calculate the volume of all glaciers on Earth. The model shows errors up to 30-40% lower than traditional global models, particularly at polar latitudes and along the peripheries of ice sheets.
Researchers find watercourse meeting sub-ice-shelf ocean cavity up close, with temperature and salinity analysis revealing it's a calm body of water primarily fed by sea. The study also reveals that the watercourse fluctuates greatly over time, with flood events occurring approximately every ten years.
New research warns that global policies may lead to triggering of multiple climate tipping points, with a 62% risk on average. However, sustainable future pathways with lower greenhouse gas emissions can significantly reduce this risk.
Researchers found that melting ice sheets in North America and Greenland may have increased horizontal motion of plates by 25% and up to 40% at the Mid-Atlantic Ocean Ridge. This could lead to an increase in volcanic eruptions in Iceland.
Research finds that strengthened westerly winds enhance clockwise oceanic circulations, transporting warm seawater and causing accelerated ice sheet melting in East Antarctica. This study's findings improve future sea level rise projections.
A University of Otago-led study develops more accurate methods to predict ice sheet and glacier deformation, driven by climate change. The research uses 70 years of data from experiments worldwide, enabling more reliable predictions about future ice-sheet movement.
Researchers used a custom-designed drone to collect detailed measurements of water vapor above the Greenland ice sheet. The findings improved an existing model's accuracy in predicting how water moves over Greenland, shedding light on the island's melting trend.
Researchers at Schmidt Ocean Institute have discovered vibrant communities of ancient sponges and corals in the wake of recently detached iceberg A-84. This observation sheds new light on the resilience and adaptability of Antarctic ecosystems.
Researchers at Stanford University used machine learning to analyze high-resolution remote-sensing data of ice movements in Antarctica, gaining new insights into the fundamental physics governing the large-scale movements of the Antarctic ice sheet. The study reveals that most of the ice shelf is anisotropic, with different physical pr...
Global glacier mass loss has increased by 36% since 2000, with 6,542 billion tons lost between 2000 and 2023. This results in an 18 mm annual contribution to global sea-level rise, making glaciers the second-largest contributor after ocean warming.
Researchers discovered that tiny algae on glacier ice can grow rapidly despite limited nutrients, darkening the surface and accelerating melting. This finding has significant implications for predicting climate change, as it highlights a potential positive feedback loop between warming and ice melt.
Researchers generated a dataset of water flow beneath the entire Antarctic Ice Sheet, improving projections of sea level rise. The model predicts higher degrees of glacier melt and mass loss by the end of the century.
Researchers at ETH Zurich discovered tiny ice quakes deep inside ice streams, explaining the discrepancy between simulations and satellite measurements. The findings impact sea-level rise estimates and may reveal fault planes in ice cores, providing a better understanding of ice stream deformation.
Researchers found significant increases in crevasses at fast-flowing glaciers, with some sectors experiencing a 25% increase. This accelerated crevassing could further speed up the mechanisms behind the loss of ice from Greenland.
A new study reveals that Greenland's ice sheet has experienced a significant increase in crevasses over the past five years, equivalent to adding a crack the size of the Great Pyramid of Giza every few days. The findings suggest a potential feedback loop that accelerates ice loss from the glacier, ultimately raising sea levels.
A new study reveals that glacier speed varies on a daily basis due to changes in air temperature, rainfall, and tides. The research found acceleration events coinciding with high temperatures or heavy rainfall, highlighting the complex interactions between environmental factors and glacial dynamics.
Scientists have used data from CryoSat-2 and ICESat-2 to track changes in the Greenland Ice Sheet's thickness, revealing an average thinning of 1.2 meters between 2010 and 2023. The study confirms that combining satellite measurements can produce a more reliable estimate of ice loss.
Scientists reveal that the Antarctic ice sheet is more unstable than previously thought, with periods of sudden melting linked to changes in Earth's orbit. The study provides a glimpse into the potential behavior of Antarctica without the Greenland Ice Sheet, highlighting the urgent need for climate action.
A team of scientists, including Binghamton University's Molly Patterson, is drilling into the Ross Ice Shelf to retrieve geological records and gain insights into the ice sheet's response to global warming. The project aims to provide crucial data for adapting to sea-level rise and mitigating greenhouse gas emissions.
Researchers estimate a total ice mass loss of 3213 Gt, equivalent to 8.9 mm global sea level rise, from 1996 to 2021. The Antarctic Ice Sheet's mass loss accelerated since 2006, with an increase in annual losses.
A team of researchers developed an exascale climate emulator that offers faster, radically enhanced high-resolution simulations without massive data storage needs. The emulator uses mixed-precision arithmetic to preserve accuracy and improve performance.
A new study from the University of Colorado at Boulder has uncovered strong evidence for a global 'Snowball Earth' event, where massive glaciers covered the entire planet down to the equator hundreds of millions of years ago. The findings provide critical insights into the planet's geologic history and the emergence of life on Earth.
A computer modeling study found that glacial isostatic adjustment caused downward movements in the eastern US, while upward movements occurred in eastern Canada, contributing to relative sea-level rise. The research will help generate maps for aquifer management and inform decisions on sea-level rise impacts.
A new study has found that a significant fraction of meltwater mass is stored temporarily within the Greenland Ice Sheet during summer months, peaking in July. This discovery will help improve climate models, which often underestimate the complexity of water storage within ice sheets.
The Open Radar Code Architecture (ORCA) offers scientists a standardized way to build ice-penetrating radar systems, reducing costs and increasing efficiency. This enables glaciologists to collect and reuse data more effectively, advancing research into melting ice sheets and sea-level rise.
A Dartmouth-led study projects that Antarctica's glaciers will rapidly retreat and potentially collapse by 2200, increasing global sea levels by up to 5.5 feet by 2300. The researchers used 16 ice-sheet models to refine the projection of ice loss over the next 300 years.
Researchers have found a new mechanism for the formation of impermeable horizontal ice layers below the surface of ice sheets, which could improve estimates of sea level rise. This process is critical for determining the contribution of ice sheet meltwater to sea level rise.
A Pusan National University study reveals that increases in clear-sky downwelling longwave radiation and surface albedo feedback are the dominant factors behind Greenland's surface warming. This finding has significant implications for predicting future climate impacts and preventing further ice sheet melting.
A new study has reconstructed virus DNA from glacial ice cores, revealing nearly 1,700 viral species with adaptations that influenced their hosts' survival in extreme conditions. The findings suggest a connection between viruses and climate change, shedding light on the impact of global temperature shifts.
A new study led by Dartmouth researchers questions the rapid polar ice collapse model used in the IPCC's sixth assessment report. The team found that the expected rate of retreat is significantly lower than predicted, making the worst-case scenario less likely, but still dire due to ongoing ice loss from Greenland and Antarctica.
A new study confirms that the center of Greenland's ice sheet melted away in recent geological past, exposing a green, tundra landscape. The discovery suggests that the giant ice sheet is more fragile than previously thought and increases the risk of sea-level rise, potentially leading to catastrophic flooding in coastal cities.
A new study shows that predicting exact tipping times for critical Earth system components is challenging due to large uncertainties. The authors identified three primary sources of uncertainty and found that predicted tipping times for the Atlantic Meridional Overturning Circulation (AMOC) ranged from 2050 to 8065.
A new study suggests that the rising earth in Antarctica will impact future sea level rise, depending on how much global warming is controlled. If humans lower greenhouse gas emissions, upward shifts in solid earth could reduce Antarctica's contribution to sea level rise by about 40%, bolstering best-case scenarios for global sea level...