University of Washington School of Public Health

UW SPH News: Air quality study takes off

Air quality study takes off


Communities near Sea-Tac International Airport want to know if jet traffic is affecting their health. With funding from the Washington State Legislature, the UW School of Public Health seeks to help answer that question.


Researchers led by Edmund Seto, associate professor of environmental and occupational health sciences, and Timothy Larson, professor of environmental and occupational health sciences and of civil and environmental engineering, will measure the extent of ultrafine particles produced by jet engines.

These particles are much smaller than ones produced by heavy trucks and diesel vehicles. Once inhaled, they can spread through the bloodstream to major organs. Researchers will measure the aircraft pollution with mobile monitoring devices within 10 miles of Sea-Tac, one of the nation’s fastest-growing airports. The devices will be mounted on vehicles driven below flight paths.

Research Scientist Jeff Shirai (MS '95) with NanoScan SMPS (device used to measure particles in air)

The study is called MOV-UP, or Mobile Observations of Ultrafine Particles Study.

A 2014 study near the Los Angeles International Airport found elevated levels of ultrafine particles in a much larger downwind area than previously thought. Given hilly terrain in the Sea-Tac area, the ‘footprint’ of jet pollution is unknown and could be different from what’s been found in other airports.

Once the level of exposure is measured, scientists could then determine potential risks to human health.

The MOV-UP research team includes Michael Yost, Elena Austin, Tim Gould and Jeff Shirai. Researchers are consulting with a Study Advisroy Group of government agenices and community representatives. Visit the MOV-UP website for more information, including proposed sampling routes north and south of the aiport.