Navigation Links
Carnegie Mellon researchers apply new statistical test
Date:3/17/2009

PITTSBURGHCarnegie Mellon University's Cliff I. Davidson, Joseph B. Kadane and Nanjun Chu have found that polluted air in the highly populated East End areas of Pittsburgh are more affected by major sources to the city's southeast than previously thought.

Because more than three-quarters of particulate matter found in the city originates from outside the Pittsburgh urban area mainly to the west the importance of certain air quality sources had not been quantified in the past.

However, the new study shows that the most polluted days often occur when the winds are from the southeast, when emissions from the U.S. Steel plants add to the regional background to raise PM (particulate matter) levels over the National Air Quality Standard.

"Those southeast winds are helping pollutants from the Clairton and Edgar Thompson works hitch a ride right into our backyards," said Davidson, a professor of civil and environmental engineering and engineering and public policy at Carnegie Mellon.

Pittsburgh's history and buildings are stained with soot from steel and coal-burning home furnaces and locomotives, but pollution controls over the past decade have helped remove much of the visible dust and soot from the air. Still, interest in tiny, almost invisible PM2.5 particles ballooned in the early 1990s, when studies showed a correlation between these particles and dangerous health effects, including respiratory problems.

In last month's prestigious Environmental, Science & Technology magazine, Davidson's research team said that by using statistical methods incorporating wind speed and wind direction at 10-minute intervals for a full year, they can help track the source of PM2.5. Their research also found that the number of days when concentration exceeds 35 micrograms of PM2.5 per cubic meter of air in the city's Squirrel Hill/Oakland areas was four times higher than the number of days allowed by the National Ambient Air Quality Standard administered by the Environmental Protection Agency.

Kadane, the Leonard J. Savage University Professor of Statistics and Social Science at Carnegie Mellon, said the data was collected between July 2001 and September 2002 using a device that measured 10-minute average PM2.5 concentrations for a full year. The monitoring station was located on a hill in Schenley Park, adjacent to Carnegie Mellon and about six miles east of downtown Pittsburgh.

"The winds measured at this location were representative of regional winds without being affected by local topography," said Chu, a graduate student in Carnegie Mellon's Department of Statistics.

The research team is studying the impacts of these and other sources on Pittsburgh's air quality.

"The low elevations of emissions from the U.S. Steel plants could contribute to the concentrations we see in the East End, but we need to do further studies," Davidson said. "The demise of the steel industry contributed to great improvements in Pittsburgh's air quality, but there are still hot spots where emissions can contribute to levels of PM2.5 over the federal standard."


'/>"/>

Contact: Chriss Swaney
swaney@andrew.cmu.edu
412-268-5776
Carnegie Mellon University
Source:Eurekalert

Related biology news :

1. Carnegies Donald Brown receives lifetime achievement award from Society for Developmental Biology
2. Carnegies Doug Koshland elected Fellow of the American Academy of Microbiology
3. Carnegies Joe Berry elected Fellow of the American Geophysical Union
4. Carnegies Arthur Grossman receives Gilbert Morgan Smith medal
5. Carnegie Mellon to unveil new sequestration plan
6. Carnegies Field and Koshland Elected AAAS Fellows
7. Carnegie Mellon developing automated systems to enable precision farming of apples, oranges
8. Carnegie Mellons Philip LeDuc participates in think tank forums
9. Carnegie Mellon to receive $900,000 from EPA for brownfields research
10. Carnegie Mellon MRI technology that non-invasively locates, quantifies specific cells in the body
11. Carnegie Mellon urges industry to broaden carbon footprint calculations
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/9/2016)... , UAE, May 9, 2016 ... when it comes to expanding freedom for high net ... Even in today,s globally connected world, there is ... conferencing system could ever duplicate sealing your deal with ... obtaining second passports by taking advantage of citizenship via ...
(Date:4/26/2016)... Research and Markets has announced ... 2016-2020"  report to their offering.  , ,     (Logo: ... analysts forecast the global multimodal biometrics market to ... period 2016-2020.  Multimodal biometrics is being ... the healthcare, BFSI, transportation, automotive, and government for ...
(Date:4/13/2016)...  IMPOWER physicians supporting Medicaid patients in ... standard in telehealth thanks to a new partnership with ... IMPOWER patients can routinely track key health measurements, such ... and, when they opt in, share them with IMPOWER ... local retail location at no cost. By leveraging this ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... Hill, N.C. (PRWEB) , ... June 27, 2016 ... ... U.S. commercial operations for Amgen, will join the faculty of the University ... serve as adjunct professor of strategy and entrepreneurship at UNC Kenan-Flagler, with a ...
(Date:6/27/2016)... BOSTON , June 27, 2016   Ginkgo ... biology to industrial engineering, was today awarded as ... a selection of the world,s most innovative companies. ... at scale for the real world in the ... organism engineers work directly with customers including Fortune ...
(Date:6/24/2016)... Epic Sciences unveiled a liquid biopsy ... PARP inhibitors by targeting homologous recombination deficiency (HRD) ... test has already been incorporated into numerous clinical ... Over 230 clinical trials are investigating ... PARP, ATM, ATR, DNA-PK and WEE-1. Drugs targeting ...
(Date:6/24/2016)... ... ... Researchers at the Universita Politecnica delle Marche in Ancona combed medical journal articles ... findings are the subject of a new article on the Surviving Mesothelioma website. ... blood, lung fluid or tissue of mesothelioma patients that can help point doctors to ...
Breaking Biology Technology: