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:2/9/2015)... -- Lintec of America recently announced an exclusive license to ... including sheets, yarns and ribbons, developed at the University ... vast industrial resources of the global Lintec Group, headquartered ... America is forming the Nano-Science and Technology Center (NSTC) ... scaling up the manufacturing and commercialization of nano engineered ...
(Date:2/5/2015)... IRVINE, Calif. , Jan. 27, 2015 ... trusted provider of globally deployed, innovative test ... today announced the delivery of its ... Martin Space Systems Company (LMSSC). GENASYS is ... the demands of mission-critical applications that require ...
(Date:2/5/2015)... Calif. , Feb. 3, 2015 ... technology, demand from industries such as consumer electronics, ... market for surface mount technology (SMT) screen printers. ... to automatic control will push the adoption curve ... will remain steady as glue dispensers are indispensable ...
Breaking Biology News(10 mins):Lintec announces exclusive license to commercialize innovative carbon nanotube technology from the University of Texas at Dallas 2Lintec announces exclusive license to commercialize innovative carbon nanotube technology from the University of Texas at Dallas 3Lintec announces exclusive license to commercialize innovative carbon nanotube technology from the University of Texas at Dallas 4Marvin Test Solutions' GENASYS Platform Advances Mission-Critical Aerospace Production Test 2Marvin Test Solutions' GENASYS Platform Advances Mission-Critical Aerospace Production Test 3Marvin Test Solutions' GENASYS Platform Advances Mission-Critical Aerospace Production Test 4End-user Demand Spurs Global SMT Screen Printers and Glue Dispensers Market 2End-user Demand Spurs Global SMT Screen Printers and Glue Dispensers Market 3
(Date:3/5/2015)... 2015 e2b teknologies , a ... in Northeast Ohio, today announced a leading independent multi-specialty ... its upgrade to the latest version of Sage ... practice of its kind in the region, the organization ... transactions, so efficiency and data accessibility are paramount to ...
(Date:3/4/2015)... -- The UPMC Center for Health Security today announced ... Leaders in Biosecurity Initiative (ELBI). As part of our ... biosecurity, UPMC has selected 28 US and international emerging ... including biological science, medicine, policy, the military, think tanks ... vision and support of the Defense Threat Reduction Agency ...
(Date:3/4/2015)... , March 4, 2015 /CNW/ - Resverlogix Corp. ... has completed a collaborative research program with ...  Using Fast Collective Evolution Technology (FACET), Emerald ... all measurements obtained from each of 798 ... 2 clinical trials ASSERT, SUSTAIN and ASSURE. ...
(Date:3/4/2015)... 4, 2015 Vegalab announced the acquisition of ... last year. As part of the acquisition, Ecowin rebranded ... continuing his role as CEO for the company,s Korea ... will work alongside Koo and oversee developments at the ... Koo founded Ecowin in 2008 ...
Breaking Biology Technology:Physician Group Practice Chooses e2b teknologies to Support Its Upgrade to Sage 100 ERP 2014 2UPMC Center for Health Security Announces 2015 Emerging Leaders in Biosecurity 2UPMC Center for Health Security Announces 2015 Emerging Leaders in Biosecurity 3Resverlogix Collaborates with Emerald Logic to Identify Factors Driving Drug Response and Efficacy in Phase 2 Program 2Resverlogix Collaborates with Emerald Logic to Identify Factors Driving Drug Response and Efficacy in Phase 2 Program 3Resverlogix Collaborates with Emerald Logic to Identify Factors Driving Drug Response and Efficacy in Phase 2 Program 4Korean Government Program Supports Vegalab's Research and Development 2Korean Government Program Supports Vegalab's Research and Development 3
Cached News: