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 Group News : Pao Baylon and Crystal McClure publish new papers
Posted on 2014/9/22 12:20:00

Two new papers from the Jaffe Group have been accepted for publication!

Pao Baylon's paper titled "Ozone enhancement in western US wildfire plumes at the Mt. Bachelor Observatory: The role of NOx" will be published in Atmospheric Environment.
Find the paper here.

Crystal McClure's paper titled "Evaluation of the KCl Denuder Method for Gaseous Oxidized Mercury using HgBr2 at an In-Service AMNet Site" will appear in Environmental Science & Technology.
Find the paper here.

 Group News : Crystal McClure does research in China
Posted on 2014/9/8 11:50:00

"Getting to spend time in China and learn both scientifically and culturally was an opportunity of a lifetime," says Crystal McClure in summing up her recent months in China. As an East Asia and Pacific Summer Institute (EAPSI) fellow, she spent the summer in Beijing working with Dr. Shuxiao Wang at Tsinghua University. She studied oxidized mercury species emitted from coal-fired power plants. In addition to her research, she traveled around China with 39 other US EAPSI scientists and experienced many of the sights and tastes of China.

At left: Some of the US students on a weekend trip to Zhangjiajie

 Mt. Bachelor Observatory : Jaffe Group presents papers at Mountain Sites Symposium
Posted on 2014/9/4 14:27:20

In August Pao Baylon, Jonathan Hee, and Dan Jaffe presented papers at the 2014 Symposium on Atmospheric Chemistry and Physics at Mountain Sites, sponsored by Storm Peak Laboratory and held in Steamboat Springs, CO.

Pao's presentatin was titled "Ozone enhancement in wildfire plumes at Mt. Bachelor: Role of NOx"; Jon's was titled "Overview of instrumentation and methods used at Mt. Bachelor"; and Dan's was titled "Scientific results from the 1st decade of observations at Mt. Bachelor."

 Group News : Jaffe Group publishes new papers on aerosol, ozone, and mercury
Posted on 2014/8/13 14:20:00

The Jaffe Group has published three new papers in 2014:

1. Timonen, H., Jaffe, D. A., Wigder, N., Hee, J., Gao, H., Pitzman, L., and Cary, R. A., 2014. Sources of carbonaceous aerosol in the free troposphere. Atmospheric Environment 92, 146-153, doi: 10.1016/j.atmosenv.2014.04.014.
Find the full article here.

2. Gratz, L. E., Jaffe, D. A., and Hee, J. R., 2014. Causes of increasing ozone and decreasing carbon monoxide in springtime at the Mt. Bachelor Observatory from 2004 to 2013. Atmospheric Environment, doi: 10.1016/j.atmosenv.2014.05.076.
Find the full article here.

3. Jaffe, D. A., et al., 2014. Progress on understanding atmospheric mercury hampered by uncertain measurements. Environmental Science & Technology 48, 7204-7206, doi: 10.1021/es5026432.
Find the full article here.

In the second paper, Gratz, Jaffe, and Hee examined 10-year trends in springtime ozone (O3) and CO at the Mt. Bachelor Observatory. They found that the median O3 increased significantly from 2004 to 2013, while the median CO decreased. They attributed the rise in springtime O3 to the increase in O3 precursor emissions in Asia and long-range transport to the western United States. These trends suggest that emissions from East Asia likely impact air quality in the western U.S.


Springtime ozone (O3) mixing ratios at MBO, 2004-2013
5th percentile (green circles), median (blue diamonds),
and 95th percentile (red triangles) springtime O3 mixing ratios.
The median and 95th percentile springtime O3 increased significantly over the 10-year period.

Find the full article here.

 Group News :  Nicole Wigder passes her PhD defense
Posted on 2014/8/4 11:00:00

Hearty congratulations to Nicole Wigder on passing her defense for her PhD! Nicole successfully defended her dissertation, "Influence of Baseline Air Masses and Wildland Fires on Air Quality in the Western United States."

Nicole, we wish you unlimited success in your new job, but we will struggle to fill the huge hole you left behind.

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 Jaffe Group in the News

Importing air pollution from China
CBC, September 21, 2014

China blamed for U.S. ozone
Science, September 12, 2014

Crowdfunding science: A new piece of the research grant puzzle
Earth Magazine, July 27, 2014

Homes near rail lines face exposure to harmful emissions: study
The Vancouver Sun, March 23, 2014

Study a window into coal train air pollution
The Olympian, March 11, 2014

China may finally be taking air pollution seriously
The News Tribune, Tacoma, February 6, 2014

Coal-Hungry World Brings Tough Choices For Native Americans
Huffington Post, January 20, 2014

Worries in the Path of China's Air
The New York Times, December 25, 2013

New research from UW Bothell professor adds fuel to coal-train fight
The Seattle Times, November 5, 2013

Public Presentation on Diesel and Coal Train Findings
UW News, November 4, 2013
UWB Press Release, October 21, 2013

Mercury pollution: With pact's completion, the real work begins
Science, September 2013

Pacific Northwest Weighs Environmental Risks of Cashing in on Coal Export Market
PBS (Video), August 2, 2013

Hazy days of summer: Southeast U.S. field work measures mercury, smog
UW Today, July 9, 2013

Smyrna airport site for project on nation's air pollution
Tennessean, June 23, 2013

What Coal-Train Dust Means For Human Health
KUOW Radio, March 11, 2013

US cities suffer impact of downwind Chinese air pollution
China Dialogue, January 17, 2013

Wind Riders
The Daily, January 9, 2013

Researcher finds life flying high above
Phys.Org, January 7, 2013

UW Researchers finding the high life
The Seattle Times, December 31, 2012

Big turnout expected for coal-transport project hearing
The Seattle Times, December 12, 2012

Siberian Smoke streaks Seattle Skylines
The Seattle Times, July 14 2012

Asian Emissions put US cities over O3 limit
Nature, March 05 2012

Mercury from the Sky
Decoded Science, December 20, 2011

Chinese pollution felt in US
The Alicia Patterson Foundation, 2011

Mercury in the Food Supply
The Guardian News, UK

Airborne Microbes
Environment 360, Yale
EOS, Transactions AGU, August 2011

Made in China: imported Air Pollution
Discover Magazine, April 2011

More on Japan radiation
Puget Sound Business Journal, Q&A with Dan Jaffe
KING 5 News, April 2011

U.S. radiation sensors show negligible readings
Seattle Times
KPLU NPR Radio
KIRO TV, March 2011

UW Scientist Tracks Airborne Mercury From China
KUOW Radio, October 2010

Asia-produced ozone making its way to U.S., study finds
McClatchy, February 2010

Ozone from Asia linked to levels in Western U.S. skies
Desert News, January 2010

Why Geologists Love Beer
Wired Science, December 2009

Forest Service Employees for Environmental Ethics
Made in China, April 2009

The Last Empire: China's Pollution Problem Goes Global
Mother Jones, January 2008

Coal dependency hits environment
Associated Press, Time Online, November 6, 2007

Asian pollutants found atop Mount Bachelor
Associated Press, The Statesman Journal (Salem, OR), July 16, 2007

Scientist Sees Bad Days Ahead for Gorge Air
The Oregonian, March 14, 2007

Jaffe Group Doctoral Candidate David Reidmiller gave testimony before the Washington State Senate
Joint Memorial 8000, February 22, 2007

Ill Wind: Asia's Pollution Crisis featured Jaffe Group airborne research
CNN, Spring 2006

China's mercury flushes into Oregon's rivers
The Oregonian, November 24, 2006

An import from Asia: Bad air
Seattle Times, April 21, 2006

Bad air drifts across Pacific
Tacoma News Tribune, Sept. 20, 2005

Keeping alert to the threats of environmental changes
The Seattle Times, June 1, 2005

Fiddling while Siberia burns: 'lungs of Europe' under threat from forest fires
The Independent, May 31, 2005

Air pollution from other countries drifts into USA
USA Today, March 13, 2005

Asia pumps out more mercury than previously thought
ES&T Online News, January 5, 2005


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