December 13, 2021
Artificial intelligence can create better lightning forecasts
New research shows that machine learning — computer algorithms that improve themselves without direct programming by humans — can be used to improve forecasts for lightning, one of the most destructive forces of nature.
December 8, 2021
Simulations show how earthquake early warning might be improved for magnitude-9 earthquakes
Seismologists used 30 detailed simulations of magnitude-9 slips on the Cascadia Subduction Zone to evaluate how the ShakeAlert earthquake early warning system would perform in these events. Results show the alerts generally work well, but suggest that lower alert thresholds provide more timely warnings over the full area that will feel the shaking.
October 28, 2021
Video: Great ShakeOut drill tests new earthquake early warning system
At 10:21 a.m. on Oct. 21, teacher Wade Johnson’s science class at Port Susan Middle School scrambled under their desks as part of the annual Great American ShakeOut. It was Stanwood Camano School District’s first live test of its earthquake early warning system with all 13 of its schools participating in a “Drop, Cover, and Hold On” drill.
How Dungeness crabs’ complex lifecycle will be affected by climate change
Results show that by the end of this century, lower-oxygen water on the Pacific Northwest coast will pose the biggest threat to Dungeness crabs. And while these crabs start as tiny, free-floating larvae, it’s the sharp-clawed adults that will be most vulnerable.
October 6, 2021
How ‘ice needles’ weave patterns of stones in frozen landscapes
A University of Washington researcher is part of an international team that has used modern tools to explain repeating patterns of stones that form in frost-prone landscapes.
September 7, 2021
Research, education hub on ‘coastal resiliency’ will focus on earthquakes, coastal erosion and climate change
The new Cascadia Coastlines and Peoples Hazards Research Hub, led by Oregon State University and the University of Washington, will study coastal hazards and community resilience. The National Science Foundation awarded $18.9 million for the hub over five years.
August 25, 2021
Volcanic eruptions may have spurred first ‘whiffs’ of oxygen in Earth’s atmosphere
A new analysis of 2.5-billion-year-old rocks from Australia finds that volcanic eruptions may have stimulated population surges of marine microorganisms, creating the first puffs of oxygen into the atmosphere. This would change existing stories of Earth’s early atmosphere, which assumed that most changes in the early atmosphere were controlled by geologic or chemical processes.
August 5, 2021
Drier, warmer night air is making some Western wildfires more active at night
Firefighters have reported that Western wildfires are starting earlier in the morning and dying down later at night, hampering their ability to recover and regroup before the next day’s flareup. A study by University of Washington and U.S. Forest Service scientists shows why: The drying power of nighttime air over much of the Western U.S. has increased dramatically in the past 40 years.
July 27, 2021
Possible future for Western wildfires: Decade-long burst, followed by gradual decline
A model of the eastern California forests of the Sierra Nevada looks at the longer-term future of wildfires under future climate change scenarios. Results show an initial roughly decade-long burst of wildfire activity, followed by recurring fires of decreasing area — a pattern that could apply to other hot, dry forests in the West.
July 1, 2021
Last ice-covered parts of summertime Arctic Ocean vulnerable to climate change
The region north of Greenland and the Canadian Arctic has been termed the Last Ice Area, where sea ice will remain the longest in summertime, providing a refuge for ice-dependent Arctic species. But conditions last summer show that parts of this region are already experiencing less summer ice due to climate change.
June 11, 2021
Edge of Pine Island Glacier’s ice shelf is ripping apart, causing key Antarctic glacier to gain speed
Satellite images show that from 2017 to 2020, Pine Island Glacier’s ice shelf lost about one-fifth of its area, mostly in three dramatic breaks. This caused the glacier to speed up by 12%, hastening its downward motion and boosting its contribution to rising seas.
June 9, 2021
Endangered blue whales recorded off southwest coast of India
Endangered blue whales are present and singing off the southwest coast of India. The results provide insight into a poorly studied population and suggest conservation measures should include this region.
June 3, 2021
South Pole and East Antarctica warmer than previously thought during last ice age, two studies show
University of Washington glaciologists are co-authors on two papers that analyzed Antarctic ice cores to understand the continent’s air temperatures during the most recent glacial period. The results help understand how the region behaves during a major climate transition.
May 3, 2021
Earthquake early warnings launch in Washington, completing West Coast-wide ShakeAlert system
The U.S. Geological Survey, the University of Washington-based Pacific Northwest Seismic Network, and state emergency managers on Tuesday, May 4, will activate the system that sends earthquake early warnings throughout Washington state. This completes the rollout of ShakeAlert, an automated system that gives people living in Washington, Oregon and California advance warning of incoming earthquakes.
March 31, 2021
Thicker-leaved tropical plants may flourish under climate change, which could be good news for climate
As carbon dioxide continues to rise, multiple changes in the leaves of tropical plants may help these ecosystems perform better under climate change than previous studies had suggested.
March 2, 2021
Rating tornado warnings charts a path to improve forecasts
A new method to rate tornado warnings shows that nighttime tornadoes in the U.S. have a lower probability of detection and a higher false-alarm rate than other events. Summertime tornadoes, occurring in June, July or August, also are more likely to evade warning.
February 24, 2021
Record-high Arctic freshwater will flow through Canadian waters, affecting marine environment and Atlantic ocean currents
The Arctic Ocean’s Beaufort Sea has increased its freshwater content by 40% over the past two decades. When conditions change this freshwater will travel to the Labrador Sea off Canada, rather than through the wider marine passageways that connect to seas in Northern Europe. This has implications for local marine environments and global ocean circulation.
February 17, 2021
Q&A: ShakeAlert earthquake early warning system arriving in Pacific Northwest
After years in development, an earthquake early warning system known as ShakeAlert is on the cusp of being released in Oregon and Washington. Harold Tobin, director of the Pacific Northwest Seismic Network, answers questions about the coming rollout.
February 10, 2021
Online tool displays Pacific Northwest mountain snow depth
How’s the snow on Northwest mountains this year? Overall a little deeper than normal, but it depends where you look. A new collaboration between the University of Washington, the Northwest Avalanche Center lets you see how the current snow depth compares to past years for nine sites in Washington and two in Oregon.
February 9, 2021
Limiting warming to 2 C requires emissions reductions 80% above Paris Agreement targets
Even if all countries meet their Paris Agreement goals for reducing emissions, Earth has only a 5% chance of staying below 2 C warming this century, a previous study showed. But reductions about 80% more ambitious, or an average of 1.8% drop in emissions per year rather than 1% per year, would be enough to meet the Paris Agreement’s temperature goal.
February 4, 2021
Global warming found to be culprit for flood risk in Peruvian Andes, other glacial lakes
Human-caused warming is responsible for increasing the risk of a glacial outburst flood from Peru’s Lake Palcacocha, threatening the city below. This study is the first to directly link climate change with the risk of flooding from glacial lakes, which are growing in number and size worldwide.
February 1, 2021
Marine organisms use previously undiscovered receptors to detect, respond to light
Single-celled organisms in the open ocean use a diverse array of genetic tools to detect sunlight, even in tiny amounts, and respond. The discovery of these new genetic “light switches” could also aid in the field of optogenetics, in which a cell’s function can be controlled with light exposure.
December 15, 2020
A.I. model shows promise to generate faster, more accurate weather forecasts
A model based solely on the past 40 years of weather events uses 7,000 times less computer power than today’s weather forecasting tools. An A.I.-powered model could someday provide more accurate forecasts for rain, snow and other weather events.
December 8, 2020
NSF-funded deep ice core to be drilled at Hercules Dome, Antarctica
Antarctica’s next deep ice core, a 1.5-mile core reaching back to 130,000-year-old ice, will be carried out by a multi-institutional U.S. team led by UW’s Eric Steig. The site hundreds of miles from today’s coastline could provide clues to the most recent collapse of the West Antarctic Ice Sheet.
November 2, 2020
Flying through wildfire smoke plumes could improve smoke forecasts
The biggest study yet of West Coast wildfire plumes shows how a smoke plume’s chemistry changes over time. Results suggest current models may not accurately predict the air quality downwind of a wildfire.
October 15, 2020
Are climate scientists being too cautious when linking extreme weather to climate change?
Climate science has focused on avoiding false alarms when linking extreme weather to climate change. But when meteorologists warn of hazardous weather, they include a second key measure of success — the probability of detection.
September 23, 2020
Some polar bears in far north are getting short-term benefit from thinning ice
The small subpopulation of polar bears in Kane Basin were doing better, on average, in recent years than in the 1990s. The bears are experiencing short-term benefits from thinning and shrinking multiyear sea ice that allows more sunlight to reach the ocean surface, which makes the system more ecologically productive.
September 16, 2020
Most landslides in western Oregon triggered by heavy rainfall, not big earthquakes
Researchers at the University of Washington, Portland State University and the University of Oregon have shown that deep-seated landslides in the central Oregon Coast Range are triggered mostly by rainfall, not by large offshore earthquakes. The open-access paper was published Sept. 16 in Science Advances. “Geomorphologists have long understood the importance of rainfall in triggering…
August 20, 2020
February lockdown in China caused a drop in some types of air pollution, but not others
Atmospheric nitrogen dioxide, which comes from transportation, was half of what would be expected over China in February 2020. Other emissions and cloud properties, however, showed no significant changes.
June 24, 2020
Puget Sound eelgrass beds create a ‘halo’ with fewer harmful algae, new method shows
Genetic clues show that eelgrass growing underwater along Puget Sound shorelines is associated with fewer of the single-celled algae that produce harmful toxins in shellfish. The evidence shows this effect extends 45 feet beyond the edge of the eelgrass bed.
June 9, 2020
Volcanic activity and changes in Earth’s mantle were key to rise of atmospheric oxygen
Evidence from rocks billions of years old suggest that volcanoes played a key role in the rise of oxygen in the atmosphere of the early Earth.
May 28, 2020
The most common organism in the oceans harbors a virus in its DNA
A new study in Nature Microbiology shows that the most common organism in the world’s oceans — and possibly the whole planet — harbors a virus in its DNA. This virus may have helped it survive and outcompete other organisms. The study began as a UW School of Oceanography senior thesis.
May 15, 2020
Ocean ‘breathability’ key to past, future habitat of West Coast marine species
Historical observations collected off California since the 1950s suggest that anchovies thrive where the water is breathable — a combination of the oxygen levels in the water and the species’ oxygen needs, which are affected by temperature. Future projections suggest that the waters off Mexico and Southern California could be uninhabitable by 2100.
May 12, 2020
Seismologists to host virtual event on 40th anniversary of Mount St. Helens eruption
The Pacific Northwest Seismic Network, based at the University of Washington, will host an online event on the 40th anniversary of the eruption of Mount St. Helens, featuring seismologists from the UW and other institutions who can explain the events before, during and after the historic blast. The virtual event will take place from 6:30…
April 30, 2020
First results from NASA’s ICESat-2 map 16 years of melting ice sheets
Loss of ice from Antarctic and Greenland ice sheets since 2003 have contributed 0.55 inches to global sea level rise, with about two thirds coming from Greenland ice. The new, detailed satellite measurements provide a global picture of ice sheet change — and insights into the future of Greenland and Antarctica.
April 28, 2020
Agricultural pickers in US to see unsafely hot workdays double by 2050
A new study looks at temperature increases in counties across the United States where crops are grown. It also looks at different strategies the industry could adopt to protect workers’ health.
April 15, 2020
UW Center for Philosophy for Children helps families explore ‘big questions’ around COVID-19
The UW Center for Philosophy for Children created a resource list of books and short videos to explore the big questions around COVID-19 — about loneliness and isolation, boredom, illness and death, as well as fear and uncertainty.
April 1, 2020
Study synthesizes what climate change means for Northwest wildfires
A University of Washington study, published this winter in Fire Ecology, takes a big-picture look at what climate change could mean for wildfires in the Northwest, considering Washington, Oregon, Idaho and western Montana.
March 24, 2020
Ships’ emissions create measurable regional change in clouds
Years of cloud data over a shipping route between Europe and South Africa shows that pollution from ships has significantly increased the reflectivity of the clouds. More generally, the results suggest that industrial pollution’s effect on clouds has masked about a third of the warming due to fossil fuel burning since the late 1800s.
March 23, 2020
Video: UW custodial staff in the midst of massive ‘deep clean’ of campus
When the UW moved to online instruction March 9, UW Facilities Services developed a three-week disinfection plan. Custodial staff are now working through more than 500 classrooms, lecture halls, libraries, auditoriums and shared spaces, with similar efforts under way in Bothell and Tacoma.
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