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:7/24/2014)... brewery has its own microbial terroir, meaning the microbial ... found in the product, creating the final flavor according ... Applied and Environmental Microbiology . This is the ... a sake brewery. , Many sake makers inoculate ... A. Mills of the University of California, Davis, but ...
(Date:7/24/2014)... Einstein College of Medicine of Yeshiva University have ... for Parkinson,s Research to translate a basic science finding ... project will test chemical compounds on a newly identified ... acts on an underlying cause of the disease. ... manage their symptoms, we are eager to stop or ...
(Date:7/24/2014)... affect the connections between nerve cells and influence the ... of the brain that plays a significant role in ... of the study have been published in the journal ... active communication between nerve cells, known as neurons. For ... network where they constantly relay signals to one another. ...
Breaking Biology News(10 mins):The microbes make the sake brewery 2Albert Einstein College of Medicine receives grant from the Michael J. Fox Foundation to fund drug discovery project targeting Parkinson's 2Albert Einstein College of Medicine receives grant from the Michael J. Fox Foundation to fund drug discovery project targeting Parkinson's 3A protein couple controls flow of information into the brain's memory center 2A protein couple controls flow of information into the brain's memory center 3A protein couple controls flow of information into the brain's memory center 4
(Date:7/24/2014)... 24, 2014 1000 balances – 4 ... on customers’ weighing needs and expertly narrows down the ... balances, scales or even terminals. , First, select ... weight (or select readability instead) and define the accuracy ... selection criteria narrows down the list to models that ...
(Date:7/24/2014)... Draper University, a top program ... announce that for 6 weeks this summer, 39 ... on the Draper University campus in the heart ... focused on entrepreneurship, building real-world skills, and “learning ... its sixth cohort, continues to refresh its curriculum ...
(Date:7/24/2014)... July 24, 2014   Cypher Genomics, Inc., ... appointment of Adam Simpson as president ... rapid and comprehensive annotation and interpretation of individual ... "Cypher,s technology has the potential to ... enhancing diagnostic accuracy, optimizing therapeutic approaches and reducing ...
(Date:7/24/2014)... San Diego, CA (PRWEB) July 24, 2014 ... in the reporting of molecular diagnostic test results. ... tracking capabilities necessary for the validation and reporting ... in oncology. Molecular diagnostics is a rapidly growing ... for infectious disease, genetic predisposition, cancer, and companion ...
Breaking Biology Technology:Summer Entrepreneurship Program Kicked Off by Draper University in Silicon Valley 2Summer Entrepreneurship Program Kicked Off by Draper University in Silicon Valley 3Cypher Genomics Announces the Appointment of Adam Simpson as President and COO to Advance Transformative Genome Interpretation Technology 2Cypher Genomics Announces the Appointment of Adam Simpson as President and COO to Advance Transformative Genome Interpretation Technology 3New DNA-barcode Patent Virtually Eliminates False Test Results and Sample Mix-up 2
Cached News: