A University of Alberta scientist warns that polar bears are in danger of extinction due to the rapid melting of Arctic ice. The world's largest terrestrial carnivores rely on sea ice for survival, and climate change is accelerating its disappearance.
Researchers discovered a steady decline in the West Antarctic ice sheet over the past few thousand years, raising concerns about its future behavior. The ice sheet contains enough water to raise global sea level by 5 meters, threatening coastal regions with disastrous consequences.
Researchers find liquid lake beneath 62 feet of ice, containing seven times the saltiness of normal seawater. The isolated brine is believed to harbor life due to its chemical composition, with microbes returning to life after gradual melting.
The study found that Arctic temperatures are increasing at a rate of 1.2 degrees Celsius per decade, leading to the decline of perennial sea ice. If the perennial ice cover disappears, it could profoundly impact summer shipping lanes, plankton blooms, ocean circulation systems, and global climate.
A team of scientists has discovered that an Antarctic ice stream has reversed its flow over the past 250 years, a phenomenon that may be linked to long-term climate change. The study reveals that changes in the ice sheet's configuration have led to a shift in the flow direction, potentially impacting global sea levels.
Despite expected global warming impacts, a NASA study reveals an increase in Antarctic sea ice coverage, with the area lengthening by at least one day per year spanning around 5.6 million square kilometers.
Researchers at Scripps Institution of Oceanography used satellite and radar technologies to monitor the height and thickness of Antarctica's ice shelves. They successfully measured the effect of tides on ice shelf height, allowing for more accurate tracking of climate-related changes.
Recent research suggests that West Antarctic ice streams are experiencing normal variability, contrary to predictions of imminent shutdown and sea-level rise. The study found that local conditions, such as geothermal heat and frictional forces, drive the slowdown or speeding up of ice streams.
New measurements show that Greenland ice sheet flow speeds up from 31.3 cm/day in winter to a peak of 40 cm/day in summer, correlated with surface melting timing and intensity. The observed process may have contributed to the demise of past ice sheets and could impact sea level rise.
A recent study by Dr. Lidija Siller from Newcastle University suggests that water might be trapped beneath the surface of Mars' south polar ice cap, a key factor in the formation of life on the planet. The research involves studying photochemical reactions in ice and has potential implications for the detection of life on Mars.
Researchers from Oregon State University and others have found that Antarctica's ice sheets played a significant role in causing the Earth's sea level to rise by up to 70 feet in less than 500 years. This finding highlights the pressing need for better understanding of Antarctica's huge ice sheets and their stability.
Researchers discover wheat proteins that modify ice crystal growth, improving ice cream smoothness. The discovery could lead to new ingredients and manufacturing processes for improved consistency.
Research shows that lower dasher rates can produce ice cream with the same physical structure and sensory attributes as higher rates, reducing energy consumption and increasing efficiency. The balance of ingredients, including milk fat, emulsifiers, and air, is crucial in achieving desired quality and texture.
A new study from University of Colorado at Boulder shows that global temperatures have risen one degree Fahrenheit over the past 100 years, causing snow and ice to decline around the world. The Arctic region is particularly sensitive to temperature changes, with sea ice extent decreasing by about 3 percent per decade.
Two Dartmouth researchers, Erland Schulson and Carl Renshaw, propose a theory that brittle materials like rocks and ice crack in the same manner. They identify a specific type of cracking mechanism, 'comb' cracks, which leads to collapse in both ice and rock.
Researchers develop AI-powered system to provide real-time characterization of ice buildup on wings, enhancing pilot decision-making and aircraft stability. The smart ice-management system aims to improve safety for pilots flying in severe icing conditions.
Dr. Baerbel K. Lucchitta's research finds that some Martian outflow channels display similar characteristics to those on the Antarctic sea floor, carved by ice streams. The study suggests an ancient ocean may have existed in Mars' northern plains.
Scientists found that warmer surface temperatures can splinter an ice shelf and prime it for a major collapse. The process is triggered by the added pressure from surface water filling crevasses, which can crack the ice entirely through.
A new study reveals that warmer surface temperatures during summers can cause ice shelves to collapse, leading to increased ice flow and sea-level rise. The research found that added pressure from meltwater can crack ice shelves, causing portions to float away and eventually melt.
A new study revises previous estimates of the West Antarctic Ice Sheet's contribution to global sea-level rise, suggesting it may be a slower source. The ice sheet was previously estimated to add 1 millimeter per year to sea level, but new data indicates this may be an overestimation.
A study by Slawek Tulaczyk and Marion Bougamont reveals that the West Antarctic ice stream may slow down and stop moving altogether, leading to thinning and shrinking of the ice shelves. This could have dramatic consequences for global ocean circulation and climate.
Geologists propose that high-pressure ice could accumulate in planetary interiors during subduction, potentially influencing tectonic activity and volcanic eruptions on Earth and Mars. This process may also impact the planet's thermal balance, with changes in water state affecting dynamics and evolution.
Scientists develop a simple thermodynamic model to describe ice particle formation in atmosphere, independent of solute nature. The model requires only temperature and relative humidity as parameters.
A University of Florida research team discovered parts of the Antarctic ice sheet were unstable during Northern Hemisphere warming spikes. The findings suggest polar ice can undergo huge and rapid changes tied to climate, implying potential future instability.
Scientists have developed a new technique using ice-penetrating radar to study long-ago changes in West Antarctic ice streams. This allows them to look at changes much farther back in time, indicating possible fluctuations in the stability of the massive West Antarctic Ice Sheet.
Researchers use Canadian Radarsat satellite data to uncover tributaries feeding giant ice streams, changing understanding of Antarctic ice sheet dynamics. High-resolution radar maps reveal complex patterns and fast-flowing glaciers, shedding light on the continent's past and potential sea level rise
Researchers have found evidence of bacterial life in the Antarctic ice core, suggesting that microbes can thrive in extreme environments. The discovery provides insight into potential extraterrestrial habitats and could aid in designing samplers for future missions to Europa.
Arctic sea ice has been declining at an alarming rate, with a downward trend of 37,000 square kilometers per year over the past 19.4 years. A new study suggests that human-induced global warming may be contributing to this decline.
Scientists have reported a striking decline in Arctic sea ice thickness since the 1960s, with an average reduction of 4.3 feet. The study analyzed data from three autumn cruises and found a perennial ice cover of 1-3 meters, significantly thinner than previous estimates.
A new study suggests the West Antarctic Ice Sheet's complete disintegration in 7,000 years could be inevitable due to its potential instability. The ice sheet's collapse would raise global sea levels, flooding low-lying coastal regions and posing a significant threat to global climate patterns.
A taste test by University of Missouri researchers found no significant difference in the flavor of low-fat and regular chocolate ice cream due to its unique mix of chemicals that make up its distinctive flavor. The study suggests that this complexity helps mask off flavors, resulting in a similar taste experience for both versions.
Ground-penetrating radar is used to map large areas and determine snowfall patterns, providing a record for comparison with climate models. The technology can accurately date ice layers, which is essential for studying glacial cycles and changes in atmospheric chemistry.
Researchers from CU-Boulder will create a virtual sensor by combining data from two instruments orbiting NASA's Mars Global Surveyor satellite. They aim to identify the surface composition of Mars' polar ice and plot its perimeters, gaining insights into climate change on both Earth and Mars.
An international team of scientists analyzed satellite radar measurements, finding no significant melting or instability in the West Antarctic ice sheet's middle section. The study suggests the answer to whether global warming affects its stability is no, at least for now.
A new volume of research explores the physical processes and interactions of Antarctic sea ice, shedding light on its differences from Arctic sea ice. The study highlights the importance of interdisciplinary approaches to understanding this complex environment, which is sensitive to climate change.
The new volume of the American Geophysical Union's Antarctic Research Series delves into the complex ecosystems found in Antarctic sea ice. Researchers explore various habitats, including algal biomass, nitrogen metabolism, and numerical ecosystem modeling studies, providing insights into the biodiversity of this unique environment.
Researchers from CU-Boulder are part of a major international project to understand climate change trends in the Arctic and its impact on global temperatures. The Surface Heat Budget of the Arctic Ocean project uses aircraft, satellites, ships, and submarines to study interactions between sea ice, atmosphere, and clouds.
Researchers confirm massive ice shelf break-off using satellite images, indicating rapid collapse beginning early next year. The 12,000 square kilometer Larsen B Ice Shelf is nearing its stability limit due to regional climate warming, with two-thirds of the ice sheet now at risk.
Researchers used low-energy helium atom scattering to study the topmost layer of ice, finding that water molecules vibrate strongly, causing a coherent diffraction pattern to be elusive. The results explain why ice is slippery, adheres to other ice surfaces, and traps molecules in the stratosphere, leading to ozone depletion.
A thousand-foot-long ice core from the Tibetan Plateau provides a detailed climate record for the last 130,000 years, with some sections dating back potentially over 500,000 years. The analysis reveals significant changes in temperature and greenhouse gas levels during this time period.