Articles tagged with Polar Climates
A decades-long study of oceanographic data shows that warm water has expanded and shifted towards the Antarctic continental shelf, posing a threat to ice shelves. The Southern Ocean's circulation has changed, allowing excess heat from global warming to reach Antarctica's vulnerable ice sheets.
Researchers from Colorado State University found that tiny particles bubbling up from melting sea ice in the Arctic sky can create clouds, providing a platform for water vapor to freeze onto. This discovery sheds light on why Arctic clouds behave differently and could help improve weather modeling and climate change predictions.
Researchers found that trematode parasites are more abundant in cooler temperate waters, defying the typical pattern of higher biodiversity near the equator. Temperature and host mobility play a major role in shaping parasite distributions, with certain species thriving in areas where hosts can tolerate infections better.
Svalbard's polar willow plant community, a critical food source for reindeer, was found to be resilient to icing due to consistent production above-ground during summer warming. The study suggests that even with extensive winter ice encasement, some plants can thrive through increased above-ground production and seed dispersal.
Recent research reveals that volcanic eruptions can cause unpredictable weather patterns, including volcanic rain, dust storms, and unstable Antarctic air. The study also found that the Antarctic surface atmosphere has become less stable and more prone to gravity waves since the 1950s.
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.
The city's relocation to a depression resulted in colder temperatures, up to 10 degrees lower in winter. The new design prioritizes aesthetics over climate protection, creating a 'bloody wind tunnel' and neglecting essential features like snow insulation.
Polar geoengineering proposals, such as aerosol injection and sea walls, may harm fragile ecosystems and divert resources from deep decarbonization efforts. The Frontiers Forum Deep Dive series explores the limitations of these initiatives and their potential to exacerbate climate change.
A new study finds that a 2°C warming intensifies the Arctic's ability to absorb greenhouse gases, but reduces its capacity in alpine regions. This imbalance has significant implications for global carbon budgets and climate projections.
Experts say well-publicized polar geoengineering ideas would harm ecosystems and international relations. Researchers analyze proposals like aerosol injection and ocean fertilization, finding they fail to meet scientific criteria.
Five well-publicized polar geoengineering ideas are highly unlikely to benefit the polar regions and could harm ecosystems, communities, and international relations. Researchers found that these proposals would likely cost billions in setup and maintenance while introducing ecological, environmental, legal, and political challenges.
The State of the Climate report reveals record-high greenhouse gas concentrations, with CO2 levels reaching 422.8 parts per million, a 52% increase from pre-industrial levels. Global temperatures also reached a new high, with annual growth increasing to 2.4 ppm yr−1.
A groundbreaking study reveals that small zooplankton like copepods and krill enhance carbon sequestration through seasonal migrations. These tiny creatures store around 65 million tonnes of carbon annually in the deep ocean.
The Barents Sea system – gateway to the changing Arctic book documents six years of interdisciplinary research on the Barents Sea. Researchers used various platforms, including drones, satellites, and underwater robots, to collect data and make predictions about future changes.
Researchers conduct extensive four-month study to better understand cloud characteristics in the Southern Ocean, revealing a striking dominance of supercooled liquid water clouds. The findings provide valuable insights for accurately modeling polar climate and resolving discrepancies in climate models.
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.
A Dartmouth-led study found that air pollution from fossil fuels reaches the remote Arctic, altering its fundamental atmospheric chemistry. The researchers detected declines in methanesulfonic acid, a biomarker linked to phytoplankton productivity, which plummeted in environments high in emissions.
Researchers found that Arctic warming leads to an increase in ice-nucleating particles, which promote ice crystal formation in clouds. This can reduce liquid water content and potentially accelerate further warming.
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 led by Okayama University investigates the influence of precipitation radiative effects (REP) on climate models. It found that REP affects global and regional hydrological cycles, altering atmospheric circulation and surface temperatures, particularly in polar regions.
Research suggests polar climates are adjusting to a warming climate with changes in regional climate dynamics. Altered ocean-sea ice interactions may be driving recent fluctuations in sea ice extent, according to new studies.
Research by Dr. Armineh Barkhordarian finds that Arctic marine heatwaves will become a regular occurrence, with average temperatures rising 2.2 degrees Celsius above seasonal norms. The study suggests that annual heatwaves will be the norm, with significant negative impacts on the ecosystem.
New research reveals permafrost's dominant role in shaping Arctic rivers and storing massive amounts of carbon. Thawing permafrost could unleash billions of tons of CO2, exacerbating climate change.
Marine bacteria and atmospheric rivers play a crucial role in forming ice clouds at higher-than-expected temperatures over the Southern Ocean. The findings from this study provide key information for improving numerical models of ice cloud formation, which can help better predict climate conditions in vulnerable polar regions.
Scientists have developed a system to detect icing conditions in drones flying over the polar regions, allowing for safer and more efficient data collection. The onboard aerosol counters enable real-time detection of supercooled cloud droplets, which can damage drone components.
The State of the Climate report confirms record highs in greenhouse gas concentrations, global sea levels, and ocean heat content. Scientists from over 60 countries contributed to the annual review, providing a comprehensive update on Earth's climate indicators and notable weather events.
Researchers found minimal change in surface melt rates over the past four decades, despite rising global air temperatures. However, Antarctic ice shelf surface melt rates are expected to increase substantially in the coming decades due to climate change.
A new study by researchers from the University of Oldenburg found that particles from central South America were the primary source of iron in the South Pacific during the last two glacial periods. The team's theory suggests that jet stream circulation picked up fine mineral particles on the east side of the Andes and transported them ...
Oregon State University is leading a five-year national polar education and arts program, Polar STEAM, funded by the National Science Foundation. The program engages educators, artists, and writers in polar science activities to increase visibility and impact of scientific work in the Arctic and Antarctic.
Researchers developed a methodology to attribute coastal glacier retreat to human-caused climate change, revealing that even modest global warming causes most glaciers to melt or retreat. The approach simulates the behavior of real ice sheets like Greenland's, helping predict major ice loss and informing decision-making for policymakers.
A new study provides evidence of growth limitations in Antarctic fish, which have adapted to survive in freezing temperatures. Despite similar ecological conditions, these fish consume less food and grow at half the rate of temperate water cousins when held at the same temperature.
Researchers have found that the Greenland Ice Sheet is losing mass at an unprecedented rate due to the conversion of gravitational energy from meltwater into heat. The ice sheet's basal melting rates are comparable to those measured on the surface, but without solar energy input, producing a significant source of hydropower.
A new study by University of Helsinki researchers shows that boreal forests can mitigate climate change through aerosol formation and growth, influencing cloud properties and regional climate. The study found that aerosol particles produced by the forests alter cloud reflectivity, potentially cooling the climate.
Scientists use a modified drone with a radiation shield to collect high-quality atmospheric data in polar regions. The study shows that the low-cost drone provides accurate data comparable to radiosondes, expanding the observational network and improving weather forecasts.
Researchers analyzed an ice core from Greenland and found that fires in the North Atlantic region decreased over 4,500 years ago due to weaker summer insolation and expanding glaciers. Human interference, such as Viking colonization, also played a role in reducing fire frequency.