Articles tagged with Snow
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Research at CU's Niwot Ridge site reveals that ecosystems sensitive to climate changes are most impacted by warming temperatures. The study shows that warmer conditions in subalpine forests can lead to enhanced surface water evaporation and transport, affecting snowpack and alpine ecosystems.
Researchers use NASA's Swift satellite to study Comet Garradd as it moves beyond the solar system's snow line. The comet sheds water and dust at an unprecedented rate, offering clues about its composition and behavior.
Research over decades identifies impacts on burrowing animals, plant roots, and microorganisms like diatoms, which affects seabirds and mammals. Shrinking cryosphere also decreases carbon dioxide uptake from the atmosphere and alters land suitability for plants.
A long-term study by the LTER Network reveals that cool, wet areas are vulnerable to climate change, while dry forested ecosystems conserve more water as temperatures rise. The research provides valuable insights for effective management of public water supplies and informing policy decisions.
In 2012, areas usually covered in snow are bare due to La Niña conditions and a strong Arctic Oscillation. The resulting snow cover is significantly lower than in 2011, with the Great Lakes, Rocky Mountains, and East Coast experiencing less snow.
A new DNA-based method analyzed genetic material from 81 fecal samples, showing that most snow leopards ate wild animals (79%), with a relatively low proportion of domestic livestock (19.7%). The study aims to inform conservation strategies for the endangered species.
A new study by Georgia Institute of Technology suggests that Arctic sea ice decline is driving snowier winters in the Northern Hemisphere. The research found a link between diminishing Arctic sea ice and changes in atmospheric circulation patterns, leading to increased cold surges and heavy snowfall in Europe and the US.
Researchers at NCAR are developing prototype devices that can almost instantly measure large areas of snow using light pulses, satellite signals, and other technologies. These devices have the potential to provide a global picture of snow depth and improve weather forecasts.
NASA's GCPEx mission aims to improve snow detection from space to better understand snow dynamics and its impact on climate cycles. The team faces challenges in distinguishing between rain and snow due to the variety of snowflake shapes and sizes.
Researchers found that a decrease in summer Arctic sea ice cover leads to increased temperatures in autumn and winter, causing more stable atmospheric conditions that allow cold Arctic air to reach mid-latitudes. This results in colder winters with more snow in Central Europe.
Yellow-cedar trees are dying off across large areas in Alaska and British Columbia due to root freezing caused by reduced snow and cold temperatures. The tree's shallow roots make it vulnerable to freezing injury, leading to its decline. Conservation strategies are needed to protect the species.
Researchers generated induced pluripotent stem (iPS) cells from ear tissue of adult snow leopards, paving the way for cryopreservation and cloning techniques to save endangered species. This breakthrough raises hopes for the conservation of the snow leopard and other cat family members.
A new study found that warmer temperatures in the autumn can lead to colder winters due to increased snowfall at lower latitudes. The researchers observed strong warming in the Arctic during July-September and its impact on precipitation over Eurasia, resulting in an increase in average snow coverage.
NASA's GPM Cold-season Precipitation Experiment will measure light rain and snow in Ontario from Jan. 17 to Feb. 29 using an airborne science laboratory, simulating the measurements to be taken by the planned GPM Core satellite in 2014.
A USGS study found that climate-driven changes in elk behavior are causing cascading effects on plant and bird communities in mountainous Arizona. Elk's increased ability to browse on plants during winter is leading to decreased tree populations and habitat quality for songbirds.
A severe climate event in Mongolia devastated the country's livestock and Przewalski's horse population, with losses averaging 60% for horses and minimal impact on wild asses. The study emphasizes the need for managing migratory species across large landscapes to ensure their survival.
A four-year study assesses freshwater resources in the High Asia region, encompassing five mountain ranges and watersheds totaling 1 million square miles. The research aims to provide accurate data on snow and glacier contributions to river discharge, helping forecast water resource availability and vulnerability.
New reports identify extreme vulnerability of Asia's mountainous Hindu Kush-Himalayan region to climate change, with rising temperatures disturbing the balance of snow, ice, and water. Glaciers are shrinking at a rate of 22 percent in Bhutan and 21 percent in Nepal over the past 30 years.
New research published in BMC Research Notes found that snow leopards in the central Himalayas have a much lower population size than previously estimated. Genetic analysis of snow leopard scat samples revealed only 19 out of 71 original samples were actually P. uncia, with most coming from nine individuals.
A study published in Clinical Research in Cardiology found that snow shoveling was associated with a significant proportion of heart problems among patients, particularly males with a family history of coronary artery disease. The study identified three key risk factors: gender, family history, and smoking.
University of Utah researchers are using the Doppler on Wheels radar truck to study eight to 10 snow and rain storms during its time in Utah. The truck's radar system provides detailed information on the size and shape of snowflakes, lake-effect snow patterns, and other storm characteristics.
A CCNY team analysis suggests the Greenland ice sheet can experience record-breaking melting even without record-high temperatures due to positive feedback mechanisms. The team's findings indicate a near-record loss of snow and ice, with melting continuing even without last year's record highs.
A new study reveals that the albedo effect plays a crucial role in the climatic significance of forest disturbances, with some cases providing cooling while others magnify concerns about warming. Forests can either act as carbon sinks or sources depending on the disturbance type and severity.
The Finnish Meteorological Institute leads two major European projects, O3M SAF and SAF on Support to Operational Hydrology and Water Management. The institute develops software and systems for processing satellite data, including products for ozone, nitrogen oxides, sulphur dioxide, and aerosols. These products support climate change ...
A new study suggests that reforestation on abandoned agricultural land can have a significant cooling effect on the climate. By considering historical patterns of land-use conversion, researchers found that farmers generally chose to use more productive and snow-free lands, which can absorb more carbon dioxide and reduce global warming.
A surprisingly healthy population of rare snow leopards has been discovered in northeastern Afghanistan's Wakhan Corridor, according to a new study. WCS-trained community rangers used camera traps to document the presence of snow leopards at 16 different locations across the region.
A USGS-led study found that the population health of the red knot is directly tied to the number of egg-laying horseshoe crabs in Delaware Bay during the red knot's northward migration each spring. The research suggests that managing horseshoe crab populations and their harvest may help conserve red knots.
A new Australian study found a 40% decrease in summer snowfall over the last 20 years, leading to faster Arctic ice melt. The reduction in snow cover exposes sea ice to sunlight, increasing its melting rate and causing it to become thinner and less extensive.
Researchers found that airplanes can create holes in supercooled clouds, leading to increased snowfall and precipitation around major airports. The phenomenon is similar to cloud seeding but occurs naturally due to aircraft flight patterns and engine emissions.
Researchers discovered that aircraft takeoffs and landings under certain atmospheric conditions can cause a small but measurable increase in rain and snow near airports. The study used satellite images and weather forecasting models to examine the occurrence of inadvertent cloud seeding within 62 miles of six commercial airports.
A study of nine cities worldwide reveals that people are less likely to walk when temperatures drop below zero, during heavy rain or excessive snow. In contrast, warmer temperatures and sunshine increase pedestrian traffic.
Researchers from UGA found a significant relationship between autumn snow extent in specific regions of Eurasia and temperatures across North America during the subsequent winter. Years with extensive autumn snow in northwest Eurasia were associated with winter temperatures seven degrees lower near the center of North America.
A new study reveals that prolonged heavy snowfall in the Arctic can trigger rapid growth of killer fungi, devastating plant life and disrupting local food chains. This unexpected finding highlights unforeseen climate change effects on vegetation and ecosystems.
A study found an inverse relationship between temperature and falls on snow and ice leading to emergency admission, with older men most vulnerable. The cost of these falls was estimated at 42 million GBP in the UK during winter 2009-2010.
A CU-Boulder study indicates that mountain pine beetle infestations could lead to earlier snowmelt and increased water yields. The research found that dead trees with red needles accumulated more snow than living stands, while those with gray phase trees melted faster due to reduced snow interception and increased solar radiation.
Researchers discovered that reindeer can see ultraviolet light, which helps them find food and avoid predators. This unique adaptation allows them to thrive in the harsh arctic environment where humans would be vulnerable to snow blindness.
Two of Greenland's largest glaciers have lost sufficient ice to equal 300 gigatons in the last decade, equivalent to seven years of normal snow accumulation. Meanwhile, Helheim glacier gained a small amount of mass over the same period, providing a high-definition picture of climate-caused changes on the island.
New research report shows dramatic changes in Arctic climate, including thawing permafrost and reduced snow cover. The carbon stored in permafrost is estimated to be double the amount of carbon dioxide in the atmosphere today.
Renowned structural engineer Michael O'Rourke has been recognized with the American Society of Civil Engineers' 2011 Walter P. Moore Award for his significant contributions to snow load engineering, advancing building codes worldwide. His extensive research continues to inform design and safety standards.
Soot on snow accelerates glacier melt, altering snowmelt and monsoon patterns in Asia. The Tibetan Plateau's surface temperature increased by over 2 degrees Fahrenheit due to soot on snow, leading to stronger monsoons.
Researchers warn that wolverines' habitat is likely to warm dramatically due to climate change, threatening their survival. Snowpack that lasts through winter and well into spring is crucial for wolverine young, but projected warming could imperil their ability to adapt.
Climate change is projected to reduce or eliminate springtime snow cover that wolverines rely on for newborn kits' protection. August temperatures may also increase dramatically, posing a significant threat to the species' survival. The study focused on mountainous regions of the Northwest and warned of potential habitat loss.
A massive winter storm hit the US, with some areas receiving record-breaking snowfall. The GOES-13 satellite data suggests that Punxsutawney Phil may not have seen his shadow, potentially altering the traditional Groundhog Day prediction.
A massive winter storm is impacting 30 US states with severe weather conditions including heavy snowfall, freezing rain, and sleet. The storm system stretches from Texas to New England and has been described as one of the largest since the 1950s.
New research from the University of Michigan reveals that decreasing snow and ice cover in the Northern Hemisphere has exacerbated global warming, with a stronger positive feedback mechanism than initially predicted. The study shows that the cryospheric albedo feedback is almost twice as strong as models have simulated, contributing to...
A new analysis finds that Arctic snow and sea ice decline has doubled the estimate of climate models, suggesting more significant amplification of warming. The study suggests that as temperatures warm, energy is absorbed by the Earth instead of being reflected back into the atmosphere.
A powerful low-pressure system brought significant snowfall to New England, with some areas receiving over a foot of snow. The GOES-13 satellite captured an image of the storm's center off the Massachusetts coast, showing the extent of the blizzard conditions.
A study of UK trauma units found that every 5°C rise in temperature boosts kids' hospital admissions for serious injury by 10%, while snow prompts an 8% rise. The analysis of over 60,000 patients showed strong seasonal trends and correlations between weather conditions and admission rates.
The ESA GlobSnow project uses satellites to map snow cover and volume globally, especially in the northern hemisphere. This provides almost real-time data on snow cover and depth, aiding in flood forecasting and climate research.
Research published in PNAS reveals that windborne dust on high peaks in the Colorado River Basin reduces snow cover duration and increases runoff, leading to a 5% annual loss of water. This decrease in runoff affects water management, as peak flows occur earlier and are more compressed.
A new NASA study shows that increased dust in the Colorado River basin is causing snowmelt to occur earlier, reducing runoff and available water downstream. This results in a 35-billion cubic feet annual loss of water, enough to supply Los Angeles for 18 months.
A new NASA-funded study reveals that increased desert dust caused by human activities is cutting Colorado River flow, resulting in reduced water availability. The study shows peak spring runoff now comes three weeks earlier than before, with annual runoff lower by more than 5 percent.
Researchers find that increasing Antarctic sea ice extent is due to stabilization of the upper ocean by increased precipitation, which reduces melting from both above and below. Climate models predict faster melting in the future, leading to a potential decrease in sea ice extent.
A team of scientists at Columbia University's Lamont-Doherty Earth Observatory found that the anomalous winter was caused by two colliding weather events: El Niño and a strong negative phase in the North Atlantic Oscillation. This event led to more snowfall on the East Coast and northwest Europe, contrary to climate change predictions.
Research found that aircraft can seed mid-level clouds, causing narrow bands of snow or rain to develop. The study also discovered that water droplets at subfreezing temperatures are key to forming these holes in the clouds.
Scientists found pathogens thrive in marine snow aggregates, which can skew water sampling procedures and predict disease transmission to humans. The study applies island biogeography theories to microscopic drifting aggregates.
Research on the Devon Island ice cap shows a steady decline in ice volume and area since 1985, primarily due to warmer summers. The ice cap's thinning also exposes dark soil, increasing melt rates and posing concerns for shipping and sea level rise.
The National Weather Service has adopted a new method for predicting snowfall density, allowing for more accurate forecasts and differentiation between powdery and wet snow. The method uses only two variables: temperature and wind speeds at mountain crest level.
Researchers developed a new approach to track mercury's movement through Arctic ecosystems using a 'fingerprint' method. The study confirmed mass-independent fractionation occurs during sunlight-driven reactions in snow, allowing for the estimation of mercury loss and retention.
A study found that black carbon aerosols from India are a major contributor to the decline in snow and ice cover on the Himalayan glaciers. The research suggests that greenhouse gases alone are insufficient to explain the melting, with black carbon contributing at least 30% of the impact.