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Arctic hotspots study reveals areas of climate stress in Northern Alaska and Siberia

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Arctic hotspots study reveals areas of climate stress in Northern Alaska and Siberia


Map of areas that experienced ecosystem climate stress in the Arctic-boreal region between 1997-2020 as detected by multiple variables including satellite data and long-term temperature records. Watts et al., 2025, Geophysical Research Letters. Credit: Christina Shintani / Woodwell Climate Research Center

Ecological warning lights have blinked on across the Arctic over the last 40 years, according to new research, and many of the fastest-changing areas are clustered in Siberia, the Canadian Northwest Territories, and Alaska.

An analysis of the rapidly warming Arctic-boreal region, published in Geophysical Research Letters, provides a zoomed-in picture of ecosystems experiencing some of the fastest and most extreme climate changes on Earth.

Many of the most climate-stressed areas feature permafrost, or ground that stays frozen year-round, and has experienced both severe warming and drying in recent decades.

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To identify these “hotspots,” a team of researchers from Woodwell Climate Research Center, the University of Oslo, the University of Montana, the Environmental Systems Research Institute (Esri), and the University of Lleida used more than 30 years of geospatial data and long-term temperature records to assess indicators of ecosystem vulnerability in three categories: temperature, moisture, and vegetation.

Building on assessments like the NOAA Arctic Report Card, the research team went beyond evaluating isolated metrics of change and looked at multiple variables at once to create a more complete, integrated picture of climate and ecosystem changes in the region.

“Climate warming has put a great deal of stress on ecosystems in the high latitudes, but the stress looks very different from place to place and we wanted to quantify those differences,” said Dr. Jennifer Watts, Arctic program director at Woodwell Climate and lead author of the study.

“Detecting hotspots at the local and regional level helps us not only to build a more precise picture of how Arctic warming is affecting ecosystems, but to identify places where we really need to focus future monitoring efforts and management resources.”

The team used spatial statistics to detect “neighborhoods,” or regions of particularly high levels of change during the past decade.

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“This study is exactly why we have developed these kinds of spatial statistic tools in our technology. We are so proud to be working closely with Woodwell Climate on identifying and publishing these kinds of vulnerability hotspots that require effective and immediate climate adaptation action and long-term policy,” said Dr. Dawn Wright, chief scientist at Esri. “This is essentially what we mean by the ‘Science of Where.’”

The findings paint a complex and concerning picture.

The most substantial land warming between 1997–2020 occurred in the far eastern Siberian tundra and throughout central Siberia. Approximately 99% of the Eurasian tundra region experienced significant warming, compared to 72% of Eurasian boreal forests.

While some hotspots in Siberia and the Northwest Territories of Canada grew drier, the researchers detected increased surface water and flooding in parts of North America, including Alaska’s Yukon-Kuskokwim Delta and central Canada. These increases in water on the landscape over time are likely a sign of thawing permafrost.

  • Arctic hotspots study reveals areas of climate stress in Northern Alaska, Siberia
    Warming severity “hotspots” in Arctic-boreal region between 1997-2020 were detected by analyzing multiple variables including satellite imagery and long-term temperature records. Watts et al., 2025, Geophysical Research Letters. Credit: Christina Shintani / Woodwell Climate Research Center
  • Arctic hotspots study reveals areas of climate stress in Northern Alaska, Siberia
    Map of areas of severe to extremely severe drying in the Arctic-boreal region. Drying severity was determined by analyzing multiple variables from the satellite record. Watts et al., 2025, Geophysical Research Letters. Credit: Christina Shintani / Woodwell Climate Research Center
  • Arctic hotspots study reveals areas of climate stress in Northern Alaska, Siberia
    Map of areas that experienced vegetation climate stress in the Arctic-boreal region between 1997-2020 as detected by multiple variables from the satellite record. Watts et al., 2025, Geophysical Research Letters. Credit: Christina Shintani / Woodwell Climate Research Center

Among the 20 most vulnerable places the researchers identified, all contained permafrost.

“The Arctic and boreal regions are made up of diverse ecosystems, and this study reveals some of the complex ways they are responding to climate warming,” said Dr. Sue Natali, lead of the Permafrost Pathways project at Woodwell Climate and co-author of the study.

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“However, permafrost was a common denominator—the most climate-stressed regions all contained permafrost, which is vulnerable to thaw as temperatures rise. That’s a really concerning signal.”

For land managers and other decisionmakers, local and regional hotspot mapping like this can serve as a more useful monitoring tool than region-wide averages. Take, for instance, the example of COVID-19 tracking data: maps of county-by-county wastewater data tend to be more helpful tools to guide decision making than national averages, since rates of disease prevalence and transmission can vary widely among communities at a given moment in time.

So, too, with climate trends: local data and trend detection can support management and adaptation approaches that account for unique and shifting conditions on the ground.

The significant changes the team detected in the Siberian boreal forest region should serve as a wakeup call, said Watts.

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“These forested regions, which have been helping take up and store carbon dioxide, are now showing major climate stresses and increasing risk of fire. We need to work as a global community to protect these important and vulnerable boreal ecosystems, while also reining in fossil fuel emissions.”

More information:
Regional Hotspots of Change in Northern High Latitudes Informed by Observations From Space, Geophysical Research Letters (2025). DOI: 10.1029/2023GL108081

Provided by
Woodwell Climate Research Center

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Arctic hotspots study reveals areas of climate stress in Northern Alaska and Siberia (2025, January 16)
retrieved 16 January 2025
from https://phys.org/news/2025-01-arctic-hotspots-reveals-areas-climate.html

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Starry fire picks up, wrapped with hose

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Starry fire picks up, wrapped with hose


The Starry fire picked up today and the Fairbanks Area initial attack helicopter dropped buckets of water during the heat of the day.

Despite the brief uptick in fire activity, the fire remained at 575 acres and resources were able to get hose completely around the fire.

Pioneer Peak Hotshots Forrest Boynton and Trapper Gephart, cut saw line around the west side of the Starry Fire. – Sam Allen, DFFP

Crews on the East and South side off the fire swept 200 foot outside of the fire’s edge, and found no heats. A grid is planned for tomorrow on the North side of the fire.

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The City of Anderson is still at evacuation level, “Go.”

The Denali Borough has issued a ‘Ready’ evacuation order for “North 40” further west and across the Nenana River from Anderson, Alaska because of two other wildland fires in the wider area.  The “North 40” includes residents north of Lightning Avenue and between the Teklanika River and the Nenana River.

The Type 3 Incident Management Team running the Starry Fire is prepared and planning to take on other wildfires in the area should it become necessary to engage.

‘Ready’ is the first step in the “Ready. Set. Go.” Statewide evacuation planning. Residents are encouraged to prepare necessary items such as pets, medication and important documents and monitor evacuation updates.

Firefighters completed a dozer line around the fire yesterday, they were helped in part by a burn scar from the 2013 Clear Air Force Base Fire, which helped slow the fire down.

Firefighters from Elmendorf Air Force Base helped secure a two-acre slop-over on the south side of the Starry Fire. – Sam Allen, DFFP

“The dozer line is not a scalpel,” Pioneer Peak Hotshot Sup. Kris Baumgartner. Fire activity could pick up and through embers across the line.

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Two federal contract crews, Moose Heart and Clearwater, are expected to arrive Tuesday.

‹ DFFP responding to a new fire east of Delta

Categories: Active Wildland Fire, AK Fire Info, Alaska DNR – Division of Forestry & Fire Protection (DFFP)



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Coast Guard helicopter crashes in southern Alaska

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Coast Guard helicopter crashes in southern Alaska


A Coast Guard search and rescue helicopter crashed Monday morning during a training flight in Alaska.

A Coast Guard MH-60 Jayhawk helicopter had four people onboard when it went down near Harbor Mountain in Sitka, a town in the Alexander Archipelago in southern Alaska several dozen miles south of Juneau. The Jayhawk and its aircrew are assigned to Coast Guard Air Station Sitka.

The crash happened Monday morning at around 10:07 a.m. local time, the Coast Guard said. It took nearly an hour for rescue crews to arrive on the scene. Rescue. However, no serious injuries were reported, a spokesperson for the Coast Guard Arctic District told Task & Purpose. All four crew members were taken by Sitka Fire and Rescue teams to Mt. Edgecumbe Medical Center in Sitka.

The cause of the crash isn’t known, and in a post on X, the Coast Guard Arctic District said that a “formal investigation will be conducted to determine the circumstances surrounding the event.”

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The Coast Guard Arctic District covers not only Alaska but the waters around it, including the Prince William Sound and waters in the Pacific.

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Given Alaska’s remote conditions, local and military aircraft are often used to provide emergency search and rescue operations. Both the Coast Guard and National Guard regularly dispatch helicopters and fixed-wing aircraft to help people stranded or in crisis at sea.

In April, helicopters from Coast Guard Air Station Sitka and the National Guard conducted a mass casualty drill near the town, as part of what the Coast Guard called “a large joint exercise involving multiple government agencies and local organizations.”

 

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Each week on Tuesdays and Fridays our team will bring you analysis of military tech, tactics, and doctrine.

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Nicholas Slayton is a Contributing Editor for Task & Purpose. In addition to covering breaking news, he writes about history, shipwrecks, and the military’s hunt for unidentified anomalous phenomenon (formerly known as UFOs).

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Juneau couple who helped change LGBTQ+ rights in Alaska reflect on living openly and joyfully

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Juneau couple who helped change LGBTQ+ rights in Alaska reflect on living openly and joyfully


Maureen Longworth and Lin Davis smile for a photo at their home on Douglas Island on Thursday, June 18, 2026. (Photo by Clarise Larson/KTOO)

It’s Pride Month and Juneau joins other communities nationwide in celebrating LGBTQ+ people. 

One couple in Juneau, Maureen Longworth and Lin Davis, have dedicated their lives to advocating for LGBTQ+ rights. They met on a late-night dog walk at the Oakland Rose Garden in California in 1987. That was nearly 40 years ago, though Longworth remembers it clear as day. 

“I had just gotten off work and was walking my dog, but it was like near midnight, I think, and bumped into Lin walking her dogs,” Longworth said.  

A lot has happened since that first walk. The pair moved to Juneau in 1992 and now live on Douglas Island, retired with their dog, Reilly Wryly Raven. It’s been more than two decades since the pair joined a lawsuit that would change LGBTQ+ rights for state and municipal workers in Alaska. 

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It started because Longworth needed intensive dental work, and her employer wouldn’t cover it. Davis worked for the state’s Department of Labor and Workforce Development at the time, where straight married people could share employment benefits – like health insurance – with their partners. 

Davis was denied the same benefits for her partner.

“We had to pay for it out of pocket, but my coworkers out at the Department of Labor and Workforce Development, they would have automatically had their marriage partners covered,” she said. 

The women couldn’t legally get married in Alaska back then —  Alaska was actually the first state to ban gay marriage through a constitutional amendment in 1998. And, though they’d gotten married in other states and held a ceremony with friends and family, it wasn’t recognized by Alaska.

So, in 1999, they, alongside eight other gay and lesbian couples and the Alaska Civil Liberties Union, sued the state government and the Municipality of Anchorage.

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The lawsuit demanded equal benefits for domestic partnerships. It was filed right after the state amended its constitution to define marriage as only between a man and a woman. 

Longworth said it felt necessary to take a stance. 

“There was no protection for people to take care of their families,” she said.  

In 2005 — six years later — they won. The Alaska Supreme Court ruled that denying spousal benefits for gay couples was an equal protection violation. It meant that local governments and the state were required to make employment benefits accessible to people in domestic partnerships. 

It was unbelievable. We started screaming, and I was screaming at work, and telling all my coworkers,” Davis said. 

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“You called me, and I was in the library garage downtown, and I just started crying. We just couldn’t even believe it,” Longworth said. 

Since then, the pair have spent decades continuing to advocate for LGBTQ+ rights in Juneau and Alaska, even after Davis was diagnosed with leukemia a year and a half ago. They do that in part by unapologetically sharing their relationship with the world. 

“We come out to people like six times a day, just sharing what this is, as wife and wife, going through a pretty fatal diagnosis,” Davis said. 

Davis said fighting for LGBTQ+ rights opened the door for them to live their lives openly and joyfully.

“In Hamlet, there’s that line, ‘to thine own self be true.’ So that’s what we’re all about. To thine own self be true,” she said. “Go forward, be brave. You may have to be brave every day, but steady forward.”

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“You can see why I married her. Isn’t that the kind of person you’d want to live with?” Longworth said, laughing. 

And they commend and appreciate the young LGBTQ+ people who are taking up the torch — to advocate for their community and live bravely.



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