Navigation Links
Study uncovers dirty little secret: Soil emissions are much-bigger-than-expected component of air pollution

gion called the Sahel, and in the mid-latitudes of the Northern Hemisphere during summer. When the rains come to the Sahel after a six-month dry season, dormant soil bacteria reawaken and begin processing nitrogen. The satellite then detects a sudden pulse of nitrogen oxides, Jaeglé said. Similarly, emissions in the mid-latitudes of the Northern Hemisphere spike during the growing season, spurred by warmer temperatures after a cold winter, but also perhaps magnified by fertilizer use.

"The soil emissions were much larger than we expected," she said. "The biggest areas were the dry topical regions like the Sahel, and in the mid-latitude regions where there is a lot of agriculture."

During summer in North America, Europe and Asia, nitrogen oxides emitted from soil can reach half the emissions from fossil fuel combustion.

"And this is at a time when there are already problems with air pollution," Jaeglé said.

Nitrogen oxides comprise a group of highly reactive gases containing nitrogen and oxygen in varying amounts. Besides producing ozone smog, they help form the dirty brown clouds that often hang over major cities, they contribute to acid rain and they play a role in global climate change.

In addition to equatorial Africa, hot spots for soil emissions include the central plains of the United States; southwestern Europe, primarily the Iberian Peninsula; much of India; and the northern plains of Asia, she said. All of those areas are highly agricultural.

The new research was published in May in Faraday Discussions, a journal of England's Royal Society of Chemistry. Co-authors are Linda Steinberger of the UW; Randall Martin of Dalhousie University in Halifax, Nova Scotia; and Kelly Chance of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass. The work was funded by the National Aeronautics and Space Administration's New Investigator Program in Earth Science.

Jaeglé noted that agricultural activity i
'"/>

Source:UWNews


Page: 1 2 3

Related biology news :

1. Novel Asthma Study Shows Multiple Genetic Input Required; Single-gene Solution Shot Down
2. Emory Study Tests Bone Marrow Stem Cells to Improve Circulation in Legs
3. UCLA Study Shows One-Third of Drug Ads in Medical Journals Do Not Contain References Supporting Medical Claims
4. Study Demonstrates Gene Expression Microarrays are Comparable and Reproducible
5. Study Links Ebola Outbreaks To Animal Carcasses
6. Breakthrough Microarray-based Technology for the Study of Cancer
7. NYU Study Reveals How Brains Immune System Fights Viral Encephalitis
8. Study finds more than one-third of human genome regulated by RNA
9. Leukemia Drug Breakthrough Study In New England Journal Of Medicine
10. Study identifies predictors of HIV drug resistance in patients beginning triple therapy
11. New Study from Affymetrix Laboratories Points to Changing View of How Genome Works
Post Your Comments:
(Date:8/19/2014)... 19 August 2014: An engineer at the University of ... having a brain to communicate with the body. , ... L Mahadevan, has developed a mathematical model for earthworms ... how these soft bodied animals get around. , The ... pattern generator (CPG) which states that the central brain ...
(Date:8/19/2014)... This news release is available in French . ... Stand: balancing the BENEFITS and RISKS of physical activity ... a stand on the promotion of childhood physical activity ... Applied Physiology, Nutrition, and Metabolism ( APNM ... of knowledge in the area of risk of physical ...
(Date:8/19/2014)... 9- and 10-year-olds finds that those who are more ... in the brain than their peers who are less ... carry nerve signals from one brain region to another. ... more efficient nerve activity. , The team reports ... Neuroscience. , "Previous studies suggest that children with ...
Breaking Biology News(10 mins):Secrets of how worms wriggle uncovered 2Taking a stand: Balancing the BENEFITS and RISKS of physical activity in children 2Taking a stand: Balancing the BENEFITS and RISKS of physical activity in children 3Physically fit kids have beefier brain white matter than their less-fit peers 2Physically fit kids have beefier brain white matter than their less-fit peers 3
... identify thousands of different items by scanning the tiny ... Cornell University could make it just as easy to ... interest by tagging them with color-coded probes made out ... by Dan Luo, Cornell assistant professor of biological engineering, ...
... the University of Alberta have discovered that chickens raised ... the nutrients they eat towards themselves or their eggs. ... for producers who must figure out how to deal ... egg production into their own bodies. "They like to ...
... regulates the body's main biological clocks also may play ... Southwestern Medical Center have found. , The Clock gene ... and wakefulness, body temperature, hormone levels, blood pressure and ... of the brain's reward system. , UT Southwestern researchers ...
Cached Biology News:Tagging pathogens with synthetic DNA 'barcodes' 2Tagging pathogens with synthetic DNA 'barcodes' 3What comes first…the chicken, the egg, or the bad attitude? 2Gene controlling circadian rhythms linked to drug addiction 2
(Date:8/20/2014)... 20, 2014 Not long ago, it ... should be performed late in the development cycle – ... current regulatory trends suggest that, like many things GxP, ... In recent years, multiple drug sponsors have been required ... specific questions during phase I/II. It’s not only clinical ...
(Date:8/20/2014)... Aug. 20, 2014 /PRNewswire-iReach/ -- A case study ... between the school,s bioengineering department and the Intel® ... Intel® Software Academic Program, UCSD,s research focuses on ... human body.  Photo - ... the work of Dr. Todd P. Coleman ...
(Date:8/20/2014)... could improve the health of your heart, researchers have ... used a standard TENS machine like those designed to ... tragus, the small raised flap at the front of ... , The stimulation changed the influence of the nervous ... that can drive failing hearts too hard. , Professor ...
(Date:8/20/2014)... Cranford, NJ (PRWEB) August 20, 2014 ... solutions, announced today that it has expanded its myPROpad™ ... of the EQ-5D-5L, one of the most widely ... for measuring general health status. The EQ-5D is used ... to generate a measure that can be used to ...
Breaking Biology Technology:Are Extractable and Leachables going Phase-Appropriate? New Webinar Hosted by Xtalks 2Intel and University of San Diego Bioengineering Department Release Case Study on Health Sciences Research 2'Tickling' your ear could be good for your heart 2EQ-5D™ Assessment Now Available for iPad 2
... at 27th Annual J.P. Morgan Healthcare Conference -REDWOOD CITY, ... GHDX ) announced today that it has initiated ... DX(R) colon cancer assay. Utilizing more than 1,200 ... study will use prospectively defined endpoints to assess the ...
... WaferGen Biosystems,Inc. (OTC Bulletin Board: WGBS), a ... biology and stem cell research systems, today,announced ... of the company,s SmartChip(TM) Real-Time PCR System ... alpha testing program. Initial tests,conducted at ...
... Trial conducted by Novartis to evaluate safety and efficacy ... ribavirin in patients with genotypes 2 and 3 hepatitis ... Inc. (Nasdaq: HGSI ) today announced that ... that will evaluate the safety and efficacy of Albuferon(R) ...
Cached Biology Technology:Genomic Health Announces Commencement of QUASAR Clinical Validation Study for Oncotype DX(R) Colon Cancer Assay 2Genomic Health Announces Commencement of QUASAR Clinical Validation Study for Oncotype DX(R) Colon Cancer Assay 3Genomic Health Announces Commencement of QUASAR Clinical Validation Study for Oncotype DX(R) Colon Cancer Assay 4Genomic Health Announces Commencement of QUASAR Clinical Validation Study for Oncotype DX(R) Colon Cancer Assay 5WaferGen's SmartChip(TM) System Performance Successfully Demonstrated in Initial Phase of Alpha Testing Program 2WaferGen's SmartChip(TM) System Performance Successfully Demonstrated in Initial Phase of Alpha Testing Program 3WaferGen's SmartChip(TM) System Performance Successfully Demonstrated in Initial Phase of Alpha Testing Program 4WaferGen's SmartChip(TM) System Performance Successfully Demonstrated in Initial Phase of Alpha Testing Program 5Human Genome Sciences Announces Initiation of Phase 2b Trial of Albuferon(R) Dosed Monthly in Chronic Hepatitis C 2Human Genome Sciences Announces Initiation of Phase 2b Trial of Albuferon(R) Dosed Monthly in Chronic Hepatitis C 3Human Genome Sciences Announces Initiation of Phase 2b Trial of Albuferon(R) Dosed Monthly in Chronic Hepatitis C 4Human Genome Sciences Announces Initiation of Phase 2b Trial of Albuferon(R) Dosed Monthly in Chronic Hepatitis C 5
... cDNA Library Panels were designed for full-length ... of PCRs to identify the desired cDNA ... in a 96-well "Master Plate," where each ... Having identified the positive well(s) by gel ...
... The Rapid-Screen cDNA Library Panels were designed ... three sets of PCRs to identify the ... is performed in a 96-well "Master Plate," ... 5,000 clones. Having identified the positive well(s) ...
... The ES Cell Characterization Kit consists ... activity determination as well as four ES ... (including controls). • Stem cells have become ... due to their therapeutic potential and because ...
... by a modification of the procedure ... Bioeng., 11 , 1055 ... yield an A 260 of ... (1 cm light path). Physical Form: ...
Biology Products: