University of Washington researchers analyzed data collected in the decade following the Paris Agreement, an international treaty signed in 2015 to limit warming by cutting emissions. The treaty has helped nations reduce the amount of carbon released per dollar, but emissions are still too high due to global economic growth.
Dengue fever incidence could rise as much as 76% by 2050 due to climate warming across a large swath of Asia and the Americas, according to a new study.
Thousands of grasshopper specimens from mountains in Colorado show trends in how the insects changed in size over 65 years. With earlier emergence of spring greenery and earlier summer drought, grasshopper species that emerged early in the year grew larger, while grasshopper species that emerge later in the year grew smaller in size. The study, led by UW biologist Lauren Buckley, shows that changes in insect size can be predicted based on lifecycles and environmental conditions.
University of Washington researchers show that the all-time record low in winter sea ice extent in 2023 can be explained by warm Southern Ocean conditions and patterns in the winds that circled Antarctica months earlier, allowing forecasts for sea ice coverage around the South Pole to be generated six or more months in advance. This could support regional and global weather and climate models.
From a base at the southwest corner of the UW’s Seattle campus, the Office of the Washington State Climatologist’s Guillaume Mauger and Karin Bumbaco provide expertise, tools and resources on “all things climate” to partners and communities across the state.
As Earth faces unprecedented climate change, a look into the planet’s deep past may provide vital insights into what may lie ahead. But knowledge of the natural world millions of years ago is fragmented. A 15-year study of a site in Bolivia by a joint U.S.-Bolivia team has provided a comprehensive view of an ancient ecosystem when Earth was much warmer than it is today, and changed how we look at the Andes.
The University of Washington’s Climate Impacts Group has supported a newly released plan for state agencies to address the regional impacts of climate change. The plan, led by the Department of Ecology, includes 10 state agencies’ strategies to address climate impacts.
The University of Washington, the Affiliated Tribes of Northwest Indians and others held collaborative listening sessions with Northwest coastal Tribes to hear their experiences in adapting to climate change. A new report summarizes those experiences, while an upcoming grant program hopes to help address barriers identified in the report.
Research led by the University of Washington used computer models to pinpoint varieties of corn that will be best adapted to produce high yields in future U.S. climates. The study combined weather and climate projections across the U.S. for 2050 and 2100 with a plant model that simulates corn’s growth to find the mix of traits that will produce the highest, most reliable yield under future conditions across the country.
A detailed reconstruction of climate during the most recent ice age, when a large swath of North America was covered in ice, provides information on the relationship between CO2 and global temperature. Results show that while most future warming estimates remain unchanged, the absolute worst-case scenario is unlikely.
New research documents the fastest-known large-scale breakage along an Antarctic ice shelf. In 2012, a 6.5-mile crack formed in about 5 and a half minutes, showing that ice shelves can effectively shatter, though the speed of breakage is reduced by seawater rushing in. These results can help improve ice-sheet models and projections for future sea level rise.
To paraphrase Mark Twain, reports of declining phytoplankton in the North Atlantic may have been greatly exaggerated. Analysis of a Greenland ice core going back 800 years shows that atmospheric chemistry, not dwindling phytoplankton populations, explains the recent ice core trends.
The New York Climate Exchange, a first-of-its-kind organization working to implement innovative climate solutions in New York City and across the globe, on Nov. 9 announced Stephen Hammer as its founding chief executive officer. The University of Washington is a core member of the exchange.
Briana Abrahms, a University of Washington assistant professor of biology and researcher with the UW Center for Ecosystem Sentinels, has been named a 2023 Packard Fellow for Science and Engineering, according to an Oct. 16 announcement from the David and Lucille Packard Foundation. As one of 20 new fellows across the country, Abrahms, who holds the Boersma Endowed Chair in Natural History and Conservation, will receive $875,000 over five years for her research.
The case studies in Medicine for a Changing Planet, collated from clinical encounters around the world, support health professionals in recognizing and treating a variety of health-related conditions that can be traced to environmental stressors.
Taken together, the two papers’ findings suggest that wildfire smoke poses a risk to people of all ages, not just young children and older adults.
Researchers with the University of Washington and the U.S. Forest Service have developed a new tool, REBURN, that can simulate large forest landscapes and wildfire dynamics over decades or centuries under different wildfire management strategies. The model can simulate the consequences of extinguishing all wildfires regardless of size, which was done for much of the 20th century and has contributed to a rise in large and severe wildfires, or of allowing certain fires to return to uninhabited areas to help create a more “patchwork” forest structure that can help lessen fire severity. REBURN can also simulate conditions where more benign forest landscape dynamics have fully recovered in an area.
New research found that Americans already bearing the brunt of climate change and health inequities are most at risk of impact by a lengthy power outage.
UW will be a core member of a consortium led by Stony Brook University that will build and operate The New York Climate Exchange – a carbon-neutral international hub focused on climate action and adaptation
The UW Climate Impacts Group created an interactive tool that lets state agencies and local governments see what climate scientists project for their county and what they might want to consider when developing their districts’ comprehensive plans through 2100.
A record-breaking heat wave that baked Washington state in 2021 contributed to 159 excess injury deaths, according to research led by a UW professor.
The White House Office of Science and Technology Policy and the University of Washington are bringing together climate, sustainability and resilience leaders, and educators representing a cross section of colleges and universities from around the country, with federal agency leaders for a virtual forum on climate change.
Research led by scientists at the University of Washington’s Center for Ecosystem Sentinels reveals that a warming world is increasing human-wildlife conflicts globally. They show that climate shifts can drive conflicts by altering animal habitats, the timing of events, wildlife behaviors and resource availability. It also showed that people are changing their behaviors and locations in response to climate change in ways that increase conflicts.
New research finds that ice-sheet-wide collapse in West Antarctica isn’t necessarily inevitable. The pace of ice loss varies according to regional differences in atmosphere and ocean circulation.
Climate change will reshape ecosystems through two types of events: short-term, extreme events — or “pulses” — and long-term changes, or “presses.” Understanding the effects of presses and pulses is essential as conservationists and policymakers try to preserve ecosystems and safeguard biodiversity. Researchers at the University of Washington have discovered how different presses and pulses impacted Magellanic penguins — a migratory marine predator — over nearly four decades and found that, though individual presses and pulses impacted penguins in a variety of ways, both were equally important for the future survival of the penguin population. They also found that these types of climate changes, taken together, are leading to an overall population decline at their historically largest breeding site.
The strongest Arctic cyclone ever observed struck in January 2022. A new analysis led by the University of Washington shows that while forecasts accurately predicted the massive storm, models seriously underestimated its impact on sea ice. Results suggest how forecast models for a changing Arctic Ocean could improve.
As glaciers worldwide retreat due to climate change, managers of national parks need to know what’s on the horizon to prepare for the future. A new study from the University of Washington and the National Park Service measures 38 years of change for glaciers in Kenai Fjords National Park south of Anchorage. The study, published Aug. 5 in The Journal of Glaciology, finds that 13 of the 19 glaciers show substantial retreat, four are relatively stable, and two have advanced. It also finds trends in which glacier types are disappearing fastest.
A study led by University of Washington researchers shows that over a 30-year period, African wild dogs shifted their average birthing dates later by 22 days, an adaptation that allowed them to match the birth of new litters with the coolest temperatures in early winter. But as a result of this significant shift, fewer pups survived their most vulnerable period because temperatures during their critical post-birth “denning period” increased over the same time period, threatening the population of this already endangered species. It is the first study to show that large mammalian carnivores are making major changes to their life history in response to a changing climate.
A new population of polar bears documented on the southeast coast of Greenland use glacier ice to survive despite limited access to sea ice. This small, genetically distinct group of polar bears could be important to the future of the species in a warming world.
The Our Future Duwamish project, available to community groups through The Seattle Public Library, uses an Oculus Quest 2 virtual reality headset to help viewers imagine rising seas from a vantage point along the South Seattle waterway.
Amy Snover, the retiring director of the UW Climate Impacts Group, reflects on her past decade of leadership and on how the groundbreaking climate preparedness group has evolved over more than a quarter century of existence.
Looking beyond CO2 to include other human-generated pollutants increases the amount of warming that humans have already committed to by past emissions. Earth will continue to warm even if all emissions cease, and the planet is committed to reaching peak temperatures about five to 10 years before experiencing them.
If emissions from greenhouse gases continue, species losses from warming and oxygen depletion of ocean waters could eclipse all other human stressors on marine species by around 2100. Tropical waters would experience the greatest loss of biodiversity, while polar species are at the highest risk of extinction
Including the splintering of ice inside clouds around Antarctica improves high-resolution global models’ ability to simulate clouds over the Southern Ocean – and thus the models’ ability to simulate Earth’s climate.
In the past 20 years, the Arctic has lost about one-third of its winter sea ice volume, and winter sea ice in the Arctic has lost about a foot and a half of thickness over just the past three years. This thinning is largely due to loss of older, multiyear sea ice that is more resistant to melting.
Two University of Washington experts in climate change and health are lead authors of the latest report from the Intergovernmental Panel on Climate Change (IPCC). The new report titled Climate Change 2022: Impacts, Adaptations and Vulnerability, published Monday morning, details in over three thousand pages a “dire warning” about the consequences of inaction on reducing the emissions that are causing our planet to warm and on implementing interventions to prepare for and effectively manage the dangerous impacts of climate change…
Farmers struggling to adapt to rising temperatures in tropical regions can unleash the benefits of natural cooling, alongside a host of other wins, simply by dotting more trees across their pasturelands. For the first time, a study led by the University of Washington puts tangible numbers to the cooling effects of this practice.
Though usually though of as a solid, glaciers are also slightly compressible, or squishy. This compression over the huge expanse of an ice sheet — like Antarctica or Greenland — makes the overall ice sheet more dense and lowers the surface by tens of feet compared to what would otherwise be expected.
The release of methane, a powerful greenhouse gas responsible for almost a quarter of global warming, is being studied around the world, from Arctic wetlands to livestock feedlots. A University of Washington team has discovered a source much closer to home: 349 plumes of methane gas bubbling up from the seafloor in Puget Sound, which holds more water than any other U.S. estuary.
Like humans, wild animals often return to the same places to eat, walk on the same paths to travel and use the same places to raise their young. A team led by researchers at the University of Washington and the University of Wyoming has reviewed the scientific literature and found that, while “consistent” behavior may be beneficial when environmental conditions don’t change very fast, those benefits may not be realized in the ever-changing world dominated by humans.