Air pollution in Alaska holds key information for other Arctic climates

Mar 24, 2022, 1:34 PM | Updated: Feb 7, 2023, 2:50 pm

FILE --  Armin Wisthaler, an assistant professor at the University of Innsbruck, in Austria, makes ...

FILE -- Armin Wisthaler, an assistant professor at the University of Innsbruck, in Austria, makes final adjustments to a mass spectrometer, developed at the university for quickly measuring volatile organic gasses, aboard a DC-8 jet to be used by the National Aeronautics and Space Administration (NASA) as a flying laboratory in one of the largest environmental science campaigns ever conducted to study the impact of air pollution on the Arctic's atmospheric chemistry and changing climate, at NASA's Dryden Flight Research Center on March 31, 2008 in Palmdale, California. For three weeks in April, NASA will use three research aircraft, satellites, weather balloons and more than 100 scientists based in Fairbanks, Alaska to study the "arctic haze" of air pollution that forms from sources across the Northern Hemisphere as part of the Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) field campaign. In July a second phase of study is scheduled to be conducted out of Alberta and the Northwest Territories of Canada to focus on pollution from large boreal forest fires in northwest Canada. (Photo by David McNew/Getty Images)

(Photo by David McNew/Getty Images)

FAIRBANKS, Alaska (AP) — In the pristine expanse of Alaska’s interior lies a dirty secret: some of the most polluted winter air in the United States can be found in and around Fairbanks.

The Fairbanks North Star Borough, which includes Alaska’s second largest city, routinely exceeds limits set by the U.S. Environmental Protection Agency for particle pollution that can be inhaled and cause myriad health problems.

Over seven weeks this winter, nearly 50 scientists from the U.S. and Europe descended on Fairbanks to study the sources of air pollution, how the contaminants interact in the city’s cold and dark climate and to come up with a list of best practices for people living across the circumpolar north.

What they find could help city planners make better decisions on where to place power plants or smelters in northern climates and guide lawmakers on how to regulate chemicals in fuel oil or other sources to reduce the harm.

The task becomes even more important as climate change is driving people away from places that are getting hotter toward northern areas, even though climate change is warming the Arctic twice as fast as the rest of the planet. In Fairbanks, the average winter temperature rose 2.7 degrees F (1.5 degrees C) since 1992, according to the National Oceanic and Atmospheric Administration.

Like Salt Lake City and other cities surrounded by mountains, Fairbanks suffers from winter inversions, layers of warmer air that trap cold, dirty air and keep it from dissipating. Even though wind is blowing aloft, the cold air prevents the wind from getting down to ground level.

“Just like an open top freezer in an old grocery store, that cold air just pools into the bottom of that freezer and air can just go right over the top,” said Bill Simpson, an atmospheric chemistry professor at the University of Alaska Fairbanks Geophysical Institute and the UAF College of Natural Science and Mathematics.

“It’s calm down here, and the pollution that’s emitted down here stays down here, unfortunately,” added Simpson, the project leader.

The problem isn’t unique to cold climates in the United States. The study is of interest to researchers in northern European cities because of the similar problems with inversions.

In Fairbanks, a major source of pollution comes from wood-burning stoves, which are common in this area where wood is plentiful and cheap, temperatures routinely reach minus 40 degrees F (minus 40 C) or colder and heating fuel is expensive. Other sources are vehicle exhaust systems, power plant emissions and heating oil.

Owen Hanley practiced pulmonary medicine in Fairbanks for about 35 years. The retired doctor says the air pollution problem in Fairbanks can permanently harm respiratory function and cause many other problems.

The mixture of pollutants from smoldering wood fires, cars, coal and other sources releases additional chemicals that can be more harmful than cigarette smoke.
“We know with air pollution, there’s more dementia in adults, there’s more kidney failure and young pregnant women have more miscarriages and preterm births, and little kids don’t get full lung development,” said Hanley.

Power plants in Fairbanks emit plumes of smoke into the air, and researchers in the Alaskan Layered Pollution and Chemical Analysis project are trying to understand whether these remain up high, at the level of smokestacks, or drift down to ground level, where people live.

Seven French teams made detailed measurements of the air in downtown Fairbanks in efforts to better understand how small particles and droplets are formed. Meanwhile, a Swiss team used a tethered balloon, equipped with specialized instruments, to measure characteristics of aerosols and different trace gases at 1,200 feet (365 meters) above the ground. Another instrument allowed them to measure vertical profiles of the atmosphere.

“We are trying to understand what is happening higher up” because ground level data can be different, said Roman Pohorsky, a doctoral student at the EPFL, a science and technology institution in Switzerland.

Another experiment led by Sarah Johnson, a graduate student and researcher at the University of California, Los Angeles, used a special device to measure trace gases or pollutants at different heights in the atmosphere. The instrument, called a Long Differential Optical Absorption Spectrometer, collects information by beaming light from a parking garage to reflectors set at different heights in Fairbanks, and then studying the information that comes back.

“What we’re really looking for is information about where the pollution is accumulating as well as where it’s going,” she said, adding that she hopes the research can benefit other areas with similar weather and dirty air.

Another goal of the research came from members of the Fairbanks community: People wanted to know what the air is like inside their homes.

Researchers took over a house in Fairbanks, setting up shop in the garage with tubes running from both inside the house and outside to study the air.
Ellis Robinson, a post-doctoral researcher at Johns Hopkins University in Baltimore, noted that most public health information about the dangers of air pollution comes from studying outdoor air.

“But we really need to be studying indoor air, just as much if not more,” said Robinson.

Sulfur can be a major pollutant for people who use heating oil in their houses or live near coal-fired power plants. Scientists are working to better understand how the sulfur that’s emitted, mostly as a gas, sulfur dioxide, turns into particles in colder and darker locations.

While the research is not a formal regulatory project, Simpson, the project leader, said the team would be willing to share the results with the EPA, the agency charged with determining Clean Air Act violations.

The Fairbanks area has been out of compliance with air quality standards since 2009. The EPA is reviewing the state of Alaska’s latest plan to bring the borough into compliance.

The researchers are expected to deliver the findings back to the university by late summer. The results will be shared with the Alaska Department of Environmental Conservation, Fairbanks’ air quality division and with residents, who will have the chance to weigh in on possible solutions.

“We can compare and contrast those situations and try and build a set of kind of best practices for understanding how pollution works in cold and dark places,” Simpson said.

Associated Press climate and environmental coverage receives support from several private foundations. See more about AP’s climate initiative here. The AP is solely responsible for all content.

KSL 5 TV Live


FILE - A screen displays the NYSE logo on the floor at the New York Stock Exchange in New York, Fri...

Associated Press

Stock market today: Wall Street sticks near its lowest level since June as stocks drift

Wall Street is holding near its lowest level since June, as stocks drift in early trading.

1 hour ago

FILE -- Fast food workers and union activists demonstrate outside the California State Capitol to r...

Adam Bean

California Gov. Gavin Newsom signs law to raise minimum wage for fast food workers to $20 per hour

California Gov. Gavin Newsom has signed a law raising the minimum wage for fast food workers to $20 per hour. The raise takes effect April 1.

4 hours ago

FILE: Sir Michael Gambon attends the grand opening of Harry Potter: The Exhibition at Discovery Tim...

Associated Press

Michael Gambon, actor who played Prof. Dumbledore in 6 ‘Harry Potter’ movies, dies at age 82

Actor Michael Gambon, who played Dumbledore in the later Harry Potter films, has died at age 82, his publicist says.

10 hours ago

FILE - Republican presidential candidates, from left, former Arkansas Gov. Asa Hutchinson, former N...


Republicans face growing urgency to stop Trump as they enter the second presidential debate

Republicans are meeting for their second presidential debate on Wednesday as Donald Trump's top rivals seek to blunt the momentum of the former president, who is so confident of cruising through the party's primary that he again won't share a stage with them.

1 day ago

FILE - Republican presidential candidates, from left, former Arkansas Gov. Asa Hutchinson, former N...

Associated Press

Trump heads to Michigan to compete with Biden for union votes while GOP challengers debate

As his Republican rivals gather onstage in California for their second primary debate, former President Donald Trump will be in battleground Michigan Wednesday night working to win over blue-collar voters in the midst of an autoworkers’ strike.

1 day ago

FILE - Former President Donald Trump pauses before ending his remarks at a rally in Summerville, S....

Associated Press

A judge found Trump committed fraud in building real-estate empire. Here’s what happens next

A judge's ruling that Donald Trump committed fraud as he built his real-estate empire tarnishes the former president's image as a business titan and could strip him of his authority to make major decisions about the future of his marquee properties in his home state.

1 day ago

Sponsored Articles

Design mockup half in white and half in color of luxury house interior with open plan living room a...

Lighting Design

Lighting Design 101: Learn the Basics

These lighting design basics will help you when designing your home, so you can meet both practical and aesthetic needs.

an antler with large horns int he wilderness...

Three Bear Lodge

Yellowstone in the Fall: A Wildlife Spectacle Worth Witnessing

While most people travel to this park in the summer, late fall in Yellowstone provides a wealth of highlights to make a memorable experience.

a diverse group of students raising their hands in a classroom...

Little Orchard Preschool

6 Benefits of Preschool for Kids

Some of the benefits of preschool for kids include developing independence, curiosity, and learning more about the world.

rodeo contestant on a saddle bronc...


Get Ready for the Days of ‘47 Rodeo!

The Days of '47 Rodeo is a series of events everyone in the family can enjoy, with world-class rodeo contestants vying for the gold medal.

Electric LED Lightbulb Change In Light At Home...

Lighting Design

How to Know When to Upgrade Your Lighting

This guide explores indicators that suggest it’s time for a lighting upgrade with tips to make an informed decision when you’re ready to buy. 

Brunette guy in headphones playing games on his desktop computer...

PC Laptops

Looking For a New Computer? Use This Desktop Buying Guide

Choosing a new desktop computer can come with a lot of questions, so we created this desktop buying guide.

Air pollution in Alaska holds key information for other Arctic climates