Researchers at the University of Innsbruck have elucidated the crystal structure of exotic ice XIX, a new ordered variant of high-pressure ice VI. This breakthrough discovery reveals new insights into the electrical properties of these unusual ice forms and paves the way for further experimentation to study their properties.
A new study shows that rapid ice melt in the Arctic during the last deglaciation parallels current melt rates, raising concerns about climate change. The research used marine sediment cores to reconstruct the state of the environment 20,000-10,000 years ago and found a consistent correlation between global warming and ice sheet retreat.
Researchers found that extensive sea ice prevented oxygen from reaching the deep ocean during the last ice age, contradicting previous assumptions. The study suggests that disequilibrium between surface and atmospheric oxygen levels played a crucial role in the ocean's carbon cycle.
New analysis of satellite data reveals Antarctica's ice melts at different rates each year, affecting sea level rise predictions. The study suggests that models used to predict sea-level change should reflect the dynamic nature of ice sheet changes.
Phosphorus-containing minerals from wind-blown dust fuel algal blooms on the Greenland Ice Sheet, darkening the surface and contributing to increased melting. The blooms, particularly in the Dark Zone, have significant implications for future ice sheet melting and sea level rise.
The Earth lost 28 trillion tonnes of ice between 1994 and 2017, equivalent to a sheet of ice 100m thick covering the UK. The rate of ice loss has increased markedly over the past three decades, driven by warming oceans and atmosphere.
Researchers found that Alpine summits at 3,000 to 4,000m were likely ice-free until around 5,900 years ago. This discovery helps assess future glacier loss in the Alps and provides insights into past climate changes.
Scientists aim to understand the recent collapse of the West Antarctic Ice Sheet to better gauge its potential risk in a warming climate. The Hercules Dome ice core will provide key evidence about past sea levels and ocean chemistry.
Scientists have shown that abrupt climate change in the past was closely linked to rapid sea ice decline. The study documents how sudden warming of the climate occurred when sea ice cover changed from year-round to seasonal ice cover in Nordic seas.
A new study warns that the Greenland ice sheet will experience irreversible melting if global warming exceeds 2°C, leading to significant sea-level rise and permanent changes. The ice sheet's decline could be reversed with actions to counteract global warming before it's too late.
Researchers found that the ice masses of East Antarctica could be less stable than thought, and a rise in global sea level threatens coastal areas. The study's findings indicate that the formation of large glaciers in the northern hemisphere contributed to the ice sheet's stability.
A new study by McGill University researchers demonstrates that changes in the Antarctic ice sheet were driven by melting ice sheets in the Northern Hemisphere. The team used numerical modeling and geological records to simulate simultaneous changes in sea levels and ice dynamics, revealing a complex connection between the two hemispheres.
A team of scientists found that melting ice sheets in the Northern Hemisphere caused changes in the Antarctic ice sheet, which are thousands of miles away. This study sheds light on how global warming affects ice sheet stability and provides insight into future climate instability.
Research on ice sheet weathering reveals that meltwaters from the Greenland and Antarctic Ice Sheets contain higher concentrations of key trace elements than typical rivers. This suggests long water residence times or increased weathering of minerals underlying the ice sheets, potentially affecting local marine environments.
Researchers found unusually warm water and an active ecosystem in the Bering and Chukchi seas, defying late-season expectations. The discovery highlights delays in sea ice formation supporting late-season biological production, and shifts in benthic animals' biomass.
Certain molecules bind to ice surfaces, halting further growth and acting as natural antifreeze agents. Researchers developed a computational method to model ice binding, which has applications in cryopreservation and climate modeling.
A new study explores long-term if-then-scenarios to quantify the effects of Arctic summer sea-ice melting on global warming. The research reveals that complete Arctic sea-ice melt could lead to an additional 0.2°C of warming, threatening climate goals.
A new international study by Monash University reveals that Antarctica's ice loss is expected to continue unabated for a long time, even if climate change is brought under control. The study found that rapid ice loss rates in the recent geological past were similar to those observed in rapidly changing parts of Antarctica today.
A study analyzing nearly 80 years of lake ice data found ice-free years have become more than three times more frequent since 1978, with 11% of lakes experiencing at least one completely ice-free year. Warmer winter temperatures are driving this trend, and the researchers project it will continue due to climate change.
A multiorganizational collaboration of climate modelers, ice core scientists, and paleoclimate researchers contributed to a study forecasting significant ice loss in Greenland. The team used ice sheet modeling to reconstruct the ancient climate and projected the ice sheet's future into 2100.
Researchers analyzed sediment cores to find natural sea-ice extent variation since last ice age, contrasting with recent decline. Perennial ice in western and central areas persisted even during warm periods, while southeastern part experienced seasonal ice-free conditions.
Researchers found that recurrent ice discharges from the Cordilleran ice sheet in the North Pacific contributed to global climate disturbances, including changes in deep ocean circulation and retreat of ice sheets in the North Atlantic. The study challenges theories that these events originated in the North Atlantic.
A new study finds that Greenland's rate of ice loss in the 21st century could be greater than anything seen in the past 12,000 years due to human activities. The research uses ice sheet modeling and ancient climate reconstructions to understand the past, present, and future of the Greenland Ice Sheet.
International model comparison reveals Greenland Ice Sheet will contribute 9cm to global sea-level rise by 2100, while Antarctic predictions vary between -7.8 to 30cm. However, ice-sheet models for Greenland underestimate the current changes in the ice sheet due to climate change.
A new study reconstructed sea ice transported from the Arctic Ocean through the Fram Strait and into the North Atlantic Ocean over the last 1400 years. The reconstruction suggests that the Little Ice Age was triggered by an exceptionally large outflow of sea ice from the Arctic Ocean in the 1300s.
A Japanese expedition has identified a surprising melting hotspot in East Antarctica, with ice beneath Shirase Glacier Tongue melting at an alarming rate of 7-16 meters per year. This finding could significantly impact predictions of sea level rise and climate change, as the Antarctic ice sheet is Earth's largest freshwater reservoir.
Researchers used a high-resolution climate model to compare Arctic sea ice conditions during the last interglacial with present-day data. The findings suggest that intense springtime sunshine led to the formation of melt ponds, which contributed to sea ice melt.
A new study found that glaciers in New Zealand's Southern Alps have lost more ice mass than remains today, with a doubling of ice loss since the Little Ice Age peak extent. The rate of ice loss has accelerated over the past four decades, posing significant impacts on local communities and global sea-level rise.
Researchers studied the decline of Arctic sea ice in 2018, finding it was three times higher than the initial loss during the satellite era. The study links this decline to global atmospheric processes and warns of catastrophic impacts on air temperatures and ocean circulation if the trend continues.
A new study published in Nature shows that the East Antarctic Ice Sheet retreated 700 kilometers inland during an interglacial warm period 400,000 years ago. This retreat contributed to a 3-4 meter increase in global sea level rise, with the Wilkes Basin playing a significant role.
The Greenland Ice Sheet holds enough water to raise sea levels nearly 24 feet. A new project, GreenDrill, aims to drill through the ice to the underlying bedrock, revealing the ice sheet's past in unprecedented detail and enabling more accurate predictions of how it may add to rising seas.
A $3 million project aims to uncover the extent and timing of Greenland's ice sheet meltdowns, informing predictions of sea level rise. Scientists will recover samples from basal ice and sub-ice bedrock, shedding light on the past and future stability of the Greenland Ice Sheet.
Researchers studied ocean water properties beneath Ross Ice Shelf, revealing four distinct water column regions with varying temperature and salinity structures. The findings suggest the presence of enhanced diffusion, potentially modifying cavity circulation, which is tidally modulated.
Researchers propose a new method to read magnetic pole reversals by analyzing ice cores, which could be applied to other bodies in the solar system. The team created artificial snowfall with magnetic dust and froze it into hard ice, detecting a small but detectible magnetic moment that matched the applied fields.
Researchers found that Adélie penguins in Antarctica prefer less sea ice due to its impact on their foraging habits. With less sea ice, they can dive more easily, reducing competition for prey and increasing their krill catch.
An international research team identified a temperature/time-dependent kinetic pathway with three distinctive transitions in the structural evolution from metastable crystalline ice (ice VII or ice VIII) to the thermodynamically stable ice I. The end result is a juxtaposition of these processes, where intermediate amorphous-ices compet...
Researchers evaluated 40 climate models focusing on Antarctic sea ice, finding improvements in projections compared to previous models. The study sheds light on dynamics in the Southern Ocean surrounding Antarctica, essential for understanding global climate changes.
Researchers used seismic data to calculate the maximum speed at which an ice sheet can retreat, revealing historic retreat rates that are almost ten times faster than those observed today. The study found that the ice sheets surrounding Antarctica's coastline retreated at speeds of up to 50 meters per day during regional deglaciation.
New study reveals Antarctica's ice sheets retreated at a rate of over 10 kilometers per year, much faster than current rates. High-resolution seafloor mapping allows researchers to uncover the complex history of glacial dynamics and provide insights into past sea-level rise.
The study found that Greenland's ice sheet lost an average of 200 gigatons of ice per year, and Antarctica's ice sheet lost an average of 118 gigatons of ice per year. This resulted in a global sea level rise of 0.55 inches (14 millimeters) since 2003.
A new analysis of data from NASA's ICESat-2 and ICESat satellites estimates that polar ice losses from Greenland and Antarctica contributed to 14mm of sea level rise between 2003 and 2019. The study projects that melting ice from these regions will increasingly contribute to sea level rise within tens to hundreds of years.
Researchers used ICESat-2 to track changes in ice sheet elevation over 16 years, finding significant losses in West Antarctica and Greenland's shrinking ice sheet, responsible for 14 millimeters of sea level rise. The study also reveals complex patterns of change in individual glaciers and ice shelves.
A new study reveals that plant materials from Arctic sea ice are incorporated into marine food webs, indicating the importance of sea ice ecosystems. The research shows a transition to more dependence on sea ice materials as coverage decreases, with long-term reserves of organic matter remaining accessible to seafloor animals.
A new study suggests that reducing CO2 emissions rapidly could lead to ice-free years in the Arctic, occurring only occasionally. The research indicates that humans can still determine how often the Arctic Ocean will be ice-free, depending on future emissions levels.
A new study suggests that the Arctic Ocean will likely be ice-free in summer due to high future CO2 emissions. However, rapid reductions in CO2 emissions could lead to occasional ice-free summers even before 2050. The study's findings highlight humanity's impact on the Arctic ecosystem and climate.
The study found that exceptional atmospheric circulation patterns contributed significantly to the record ice loss, which may be underestimated by current climate models. The lack of snowfall and resulting clear skies led to increased melting and runoff, resulting in a sea level rise of about 1.5 millimeters.
New research from McGill University predicts a significant increase in Arctic sea ice movement by mid-century, leading to more widespread pollutant transport between neighboring countries. Thinner, faster-moving ice can carry pollutants and microplastics, posing a threat to Arctic waters.
A study by University of Melbourne researchers found that increased tilt angle of the Earth's axis triggers warmer summers, melting Northern Hemisphere ice sheets and ending ice ages. The team used stalagmites and ocean sediment records to determine the age of two terminations around 960,000 years ago.
Researchers found that glacier ice walls block warm seawater, preventing melting and raising global sea levels. The findings provide better tools to predict future water levels and create more accurate climate prognoses.
Polar bears in the Southern Beaufort Sea are abandoning their traditional summer habitats due to shrinking sea ice. As a result, they must expend more energy to find food and access whale carcasses, potentially contributing to population declines.
New research reveals how glacier algae thrive in extreme icy environments and cause widespread darkening of the Greenland Ice Sheet. The algae produce a phenolic pigment that captures sunlight energy for melt generation, driving surface melt increases by up to 10%.
Research shows polar bears are spending more time on land, thinner and adult females have fewer cubs. Sea ice availability affects their body condition and reproductive success.
A new international study led by UNSW Sydney reveals that the West Antarctic Ice Sheet melted rapidly during the Last Interglacial period, causing a multi-metre rise in global mean sea levels. The research suggests that the ice sheet is highly sensitive to future ocean warming, posing an urgent need to minimize warming.
A study using quahog clam shells and climate models reveals Arctic sea ice can't 'bounce back' if climate change causes it to melt. Human activity is now massively forcing the system, exacerbating warming and sea ice loss.
Researchers have discovered a novel mechanism of ice growth in two dimensions, shedding light on the atomic structure of low-dimensional water. This finding may lead to the development of new materials for efficient ice removal, particularly for wind turbines and other applications.
Researchers found that annual river ice cover will decline by about six days for every one degree Celsius increase in global temperatures, affecting communities and industries. The study also detected widespread declines in monthly river ice coverage, particularly in the Tibetan Plateau, eastern Europe, and Alaska.
Climate scientists continue to face uncertainties in predicting ice sheet melt rates, which directly impact sea-level rise projections. Recent research highlights the need for improved observations and computer models to refine these estimates and inform climate adaptation efforts.
Researchers at Cornell University have discovered a new ice river forming on the Vavilov ice cap in Siberia, shedding nearly 11% of its mass since 2013. The rapid ice loss is believed to be linked to climate change, which can cause unstable ice shelves and erosion by warm water.
Researchers observe a high-speed ice feature forming on a Russian glacier, which could indicate the transition from a glacial surge to an ice stream. The study suggests this phenomenon may be more common than previously thought and could impact predictions for global sea level rise.
The Greenland ice sheet has lost 3.8 trillion tonnes of ice since 1992, with the rate of ice loss increasing seven-fold over three decades. The study's findings show that the ice sheet is tracking the IPCC's high-end climate warming scenario, predicting 40 million people will be exposed to coastal flooding by 2100.