Navigation Links
Local sources major cause of US near-ground aerosol pollution
Date:11/16/2007

A new NASA study estimates that most ground-level particulate pollution in the United States stems from regional sources in North America and only a small amount is brought to the country from other parts of the world.

Researchers using an innovative global aerosol tracking model have for the first time produced a global estimate of sources and movements of aerosols near the ground where they can affect human health and run afoul of environmental regulations. Previously, researchers studying aerosols moving between continents focused primarily on tracking a single type of aerosol, such as dust or black carbon, or measuring their quantities throughout the atmosphere. This left gaps in understanding where ground-level particulate pollution comes from.

"This is the first study to comprehensively consider the origin, composition and type of fine particles over the United States and connect them to both domestic and foreign sources." said Mian Chin, an atmospheric scientist at NASAs Goddard Space Flight Center, Greenbelt, Md., and lead author of the study.

Aerosols are airborne particles that arise from both human sources such as burning fossil fuels, and natural sources such as fires, dust and volcanoes. They are also a major source of near-ground pollution. Since 1970, particulate matter has been regulated in the United State s by the Clean Air Act. A more recent concern has been aerosols that arrive here from distant shores carried by the wind.

Chin and colleagues set out to investigate how much and what type of aerosols made the intercontinental journey in 2001. The team employed the help of a computer model using known air chemistry and wind patterns to trace a region's aerosols everything from fossil fuel and biofuel combustion, biomass burning, and volcanic sources, desert dust and sea salt back to their sources.

"Using the model, we followed the path of aerosols to find out how much is local and how much is fr
'/>"/>

Contact: Lynn Chandler
lynn.chandler-1@nasa.gov
301-286-2806
NASA/Goddard Space Flight Center
Source:Eurekalert

Page: 1 2

Related biology news :

1. University and state agencies to forecast local health effects of climate change
2. Majority of Americans want local action on global warming, says poll
3. The race for biofuels driving alternative sources of biomass
4. Space technology put into service for global water resources observations
5. deCODE discovers cause of major subtype of glaucoma
6. Bleeding, not inflammation, is major cause of early lung infection death
7. Mustafa alAbsi Ph.D. and national team awarded major NIH grant
8. Leading experts cite poor health and nutrition as major barrier to education in developing world
9. How schizophrenia develops: Major clues discovered
10. Major genetic breakthrough for ankylosing spondylitis brings treatment hope
11. NIH selects LIAI for major study on allergy molecular causes and possible treatments
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/2/2015)... Fingerprint Cards has received an order for its ... distributor World Peace Industrial Group (WPI), part of WPG Holdings. ... . Deliveries are planned to take place during Q3 ... manufacturers in Asia . The order value ... of approximately 2,200 MSEK for 2015. Jörgen Lantto, ...
(Date:6/30/2015)... June 30, 2015 Genisphere announced ... CEO to help further develop Genisphere,s therapeutics capabilities and ... experience, having spent much of the last 25 years ... Baxter Bioscience, and Johnson & Johnson. Tom started his ... and Biotech Corporate Finance. He graduated from Dartmouth College ...
(Date:6/26/2015)... ATL Technology, LLC, a top provider of electromechanical ... use solutions, headquartered in Springville, Utah , ... California corporation with locations in Santa ... Rica ). This acquisition will incorporate MedConx,s ... ATL Technology,s existing facility in Costa Rica ...
Breaking Biology News(10 mins):FPC Receives Order for Touch Fingerprint Sensors of 268 MSEK 2Genisphere Appoints New CEO, Thomas Bliss 2Genisphere Appoints New CEO, Thomas Bliss 3ATL Technology Announces Acquisition of MedConx, Inc. and Expanded Global Footprint 2
... Polarstern has returned today to Bremerhaven from the Arctic ... ever both the Northeast and the Northwest Passages and ... the research vessel,s 23rd Arctic expedition, operated by the ... journey on August 12th in Reykjavik and ended it ...
... MADISON, WI, OCTOBER 20, 2008 -- The widespread use of ... decades, with little knowledge of the long-term effects on the ... study show that samples taken from over 300 wells across ... contamination. The news is a result of a decadal long ...
... LEDs may help ... Researchers in Germany are describing a potential alternative ... Their study, scheduled for the November 5 issue of ... journal, reports that high intensity visible light from light ...
Cached Biology News:Research around the North Pole 2Research around the North Pole 3Pesticide concentrations decreasing 2American Chemical Society Weekly PressPac Oct. 15, 2008 2American Chemical Society Weekly PressPac Oct. 15, 2008 3American Chemical Society Weekly PressPac Oct. 15, 2008 4American Chemical Society Weekly PressPac Oct. 15, 2008 5American Chemical Society Weekly PressPac Oct. 15, 2008 6American Chemical Society Weekly PressPac Oct. 15, 2008 7American Chemical Society Weekly PressPac Oct. 15, 2008 8
(Date:7/27/2015)... FRANKLIN, Tenn. , July 27, ... provider of health care services and one of ... today announced that its parent company and sole ... agreement with Medical Properties Trust, Inc. ("MPT") (NYSE: ... for $900 million in cash.  The transaction is expected to ...
(Date:7/27/2015)... ... July 27, 2015 , ... This is a professional and ... basic overview of the industry including definitions, classifications, applications and industry chain structure. ... competitive landscape analysis, and key regions development status. Development policies and plans are ...
(Date:7/27/2015)... ... July 27, 2015 , ... ... announced a new video: 3 Ways to GHS Labels . This video ... the Globally Harmonized System (GHS) by effectively labeling chemical containers. , “With the ...
(Date:7/27/2015)... -- Research presented at the 2015 AACC Annual Meeting ... that led to a fingerprick Ebola test becoming the ... receive approval from the World Health Organization (WHO). This ... West Africa by identifying suspected ... isolate and treat these patients much faster than is ...
Breaking Biology Technology:Capella Healthcare Announces Agreement With Medical Properties Trust, Inc. 2Capella Healthcare Announces Agreement With Medical Properties Trust, Inc. 3Capella Healthcare Announces Agreement With Medical Properties Trust, Inc. 4Capella Healthcare Announces Agreement With Medical Properties Trust, Inc. 52015 Biophotonics Market Global Research 22015 Biophotonics Market Global Research 3Brady Releases “3 Roads to GHS Labels” Video 2Rapid Ebola Test Could Play Key Role in Efforts to End Lingering Outbreak 2Rapid Ebola Test Could Play Key Role in Efforts to End Lingering Outbreak 3
... Boston Scientific,Corporation (NYSE: BSX ) today announced ... Drug Administration (FDA) to market its second-generation,TAXUS(R) Liberte(R) ... the TAXUS Liberte stent early next month in ... its TAXUS(R),Expresss2(TM) Atom(TM) Paclitaxel-Eluting Coronary Stent System, which ...
... Beike,Biotechnology Co. Ltd., ( http://www.beikebiotech.com ) ... through evidence-based medicine, announced,today it has signed eight ... the world,s most outstanding stem cell research organizations.,As ... a "Stem Cell Expert,Advisory Committee" and a separate ...
... WILMINGTON, Del., Oct. 10 AstraZeneca (NYSE:,AZN) today ... (FDA) has,approved once-daily SEROQUEL XR(R) (quetiapine fumarate) Extended-Release,Tablets ... associated with,bipolar disorder, the manic and mixed episodes ... of bipolar I disorder as adjunctive,therapy to lithium ...
Cached Biology Technology:Video: Boston Scientific Announces FDA Approval of Second-Generation TAXUS(R) Liberte(R) Drug-Eluting Stent 2Video: Boston Scientific Announces FDA Approval of Second-Generation TAXUS(R) Liberte(R) Drug-Eluting Stent 3Stem Cell Leader Beike Signs 8 New Cooperation Agreements, Establishes Safety Monitoring Boards 2Stem Cell Leader Beike Signs 8 New Cooperation Agreements, Establishes Safety Monitoring Boards 3FDA Approves AstraZeneca's SEROQUEL XR(R) for the Treatment of Bipolar Depression and Bipolar Mania 2FDA Approves AstraZeneca's SEROQUEL XR(R) for the Treatment of Bipolar Depression and Bipolar Mania 3FDA Approves AstraZeneca's SEROQUEL XR(R) for the Treatment of Bipolar Depression and Bipolar Mania 4FDA Approves AstraZeneca's SEROQUEL XR(R) for the Treatment of Bipolar Depression and Bipolar Mania 5FDA Approves AstraZeneca's SEROQUEL XR(R) for the Treatment of Bipolar Depression and Bipolar Mania 6FDA Approves AstraZeneca's SEROQUEL XR(R) for the Treatment of Bipolar Depression and Bipolar Mania 7FDA Approves AstraZeneca's SEROQUEL XR(R) for the Treatment of Bipolar Depression and Bipolar Mania 8FDA Approves AstraZeneca's SEROQUEL XR(R) for the Treatment of Bipolar Depression and Bipolar Mania 9
ANTI END CEL LUNG AG...
EGTA, 50 g. Ethylene glycol-O,O-bis-[2-amino-ethyl]-N,N,N,N,-tetraacetic acid.Assay: > 99.0%. Category: Nucleotides & Enzymes & Biochemicals, Ultrapure Biochemicals ....
Request Info...
RABBIT ANTI NEOPTERIN...
Biology Products: