HOME >> BIOLOGY >> NEWS
Atmospheric chemistry key to global and local air pollution

Albuquerque, N.M. -- The chemical cycles in the troposphere along with pollutants of human and natural origin can alter the composition of the air and effect local, regional and global environmental quality, according to a Penn State researcher.

The troposphere -- the area of the Earth's atmosphere from the surface to ten miles above the surface where weather exists -- is also where pollution becomes a problem. In the atmosphere, a complex series of chemical reactions can alter some pollutants so that they rain out as aerosol particles or acid rain and clear the air. Other compounds remain in the air, changing, and changing again as other chemicals cause reactions.

"Pollution from megacities and biomass burning, including precursor gases to hydrogen oxides such as acetone and formaldehyde, lofted into the upper troposphere, can become the dominant hydrogen oxide source and result in efficient ozone production," says Dr. William Brune, professor of meteorology and head of Penn State's meteorology department. "These compounds can also be transported great distances before descent, possibly influencing the chemistry of remote regions."

Ozone is complicated. In the stratosphere it serves to protect life from the detrimental effects of the sun's ultraviolet radiation. At ground level, it is a pollutant implicated in respiratory problems and eye irritation. Sunlight breaks ozone apart resulting in the creation of the very reactive hydroxyl radical which begins the process that removes some pollutants from the air. However, when hydroxyl radicals break down some compounds, they produce other hydrogen oxides, which react with other pollutants and form ozone.

"The hydroxyl radical drives atmospheric oxidation by reacting with chemicals emitted from Earths surface, thus creating new chemicals that are more easily scavenged and removed by aerosols, clouds and rain," Brune told attendees today (Jan. 15) at the annual meeting of the American Meteorological Socie
'"/>

Contact: A'ndrea Elyse Messer
aem1@psu.edu
814-865-9481
Penn State
14-Jan-2001


Page: 1 2 3

Related biology news :

1. Atmospheric aerosols impact on smog formation being reassessed
2. Atmospheric carbon monoxide levels decreasing in mid-Atlantic region
3. 14,000 Years Of Atmospheric Lead Emissions Recorded In Swiss Peat Bog As Published In Science Magazine
4. Atmospheric Chemistry -- A Mysterious Isotope Effect In A Well-Known AtmosphericPollutant Discovered
5. U of T research answers key question in biochemistry
6. Carnegie Mellon University hosts ACS-PRF summer school on green chemistry
7. High profile publications in biology and biochemistry on rise at UH
8. Alcoholism risk linked to gene involved in brain chemistry
9. Biochemistry and Molecular Biology: Research at the Interface of Biochemistry and Human Health
10. Houston scientist named as rising star in chemistry
11. The American Society for Biochemistry and Molecular Biology meets in Boston

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Atmospheric chemistry key global and local air pollution

(Date:12/10/2014)... WINSTON-SALEM, N.C. , Dec. 9, 2014  Wake Forest ... medical education building for its School of Medicine. Funding ... a larger capital campaign that will be publicly launched ... will be located in the former 60 series R.J. ... Forest Innovation Quarter. Construction will begin immediately with plans ...
(Date:12/5/2014)... VIEW, Calif. , Dec. 4, 2014 /PRNewswire/ ... safety has boosted investments in new testing and ... has also given rise to a range of ... by the requirements of Generation Y, which is ... technologies. As a result, product development strategies of ...
(Date:12/3/2014)... , Dec. 2, 2014 As part ... readers, Inception Technologies is pleased to announce the release ... for customers to collect the workforce data that they ... that have been left by existing readers. Many such ... interface, connectivity and modern technology. Older models force users ...
Breaking Biology News(10 mins):Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4Inception Technologies to Release New Biometric Reader 2
(Date:12/17/2014)... Xeno Diagnostics has again received ... recent COLA inspection. Xeno has met all criteria ... accreditation organization. Accreditation is earned only by laboratories ... operations, demonstrate continued accuracy in the performance of ... survey. , While the Laboratory Excellence ...
(Date:12/17/2014)... , Dec. 17, 2014 CASI Pharmaceuticals, ... dedicated to the acquisition, development and commercialization of innovative ... the global market with a primary commercial focus on ... has been granted a Type C meeting with the ... meeting will be held in February 2015.  During this ...
(Date:12/15/2014)... DIEGO , Dec. 15, 2014 ... three-dimensional biology company focused on delivering breakthrough 3D ... the industry and collaborators of its exVive3D TM ... made widely available in full commercial release on ... the field, resulting in several awards for innovation. ...
(Date:12/13/2014)... and Virgin Unite Canada, the non-profit foundation of the Virgin ... Canadian entrepreneurs tackling social and environmental challenges. Today, Sir ... Centre to announce the new partnership, which includes the development ... $1 million in seed capital provided by Virgin Unite Canada ... Foundation, founded by Alison Lawton . ...
Breaking Biology Technology:Xeno Diagnostics Receives 3rd Award for Laboratory Excellence 2CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 2CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 3CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 4CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 5Organovo Celebrates a Positive 2014 Reception of its exVive3DTM Human Liver Tissue Product 2Organovo Celebrates a Positive 2014 Reception of its exVive3DTM Human Liver Tissue Product 3MaRS and Virgin Unite partner to invest in business as a force for good 2MaRS and Virgin Unite partner to invest in business as a force for good 3
Cached News: