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:7/9/2015)... , July 9, 2015  Unchained Labs just ... its acquisition of Avid Nano. Avid Nano designs, ... (DLS) systems.    Also today, Unchained ... and easiest to use protein sizing system. The ... a protein,s hydrodynamic size, size distribution, aggregation population ...
(Date:7/8/2015)... , July 8, 2015 Summary ... and the fourth most fatal, with a mortality rate ... poor prognosis of pancreatic cancer patients has highlighted a ... which is not being met by the current market. ... array of products with varying molecule types and mechanisms ...
(Date:7/8/2015)... July 8, 2015  Trovagene, Inc. (NASDAQ: ... today announced the launch of a study that ... Cancer Monitoring℠ (PCM) technology for predicting response to ... a combination of the novel immunotherapy agents Yervoy® ... PD-1 inhibitor. The 50-patient study will be led ...
Breaking Biology News(10 mins):Unchained Labs just can't get enough, acquires Avid Nano, rocks out the new pUNk! 2Frontier Pharma: Pancreatic Cancer - Identifying and Commercializing First-in-Class Innovation 2Frontier Pharma: Pancreatic Cancer - Identifying and Commercializing First-in-Class Innovation 3Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 2Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 3Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 4
... particles one-billionth of a meter in size can be ... brain cancer. What's more, these nanoparticles can be used ... them, according to researchers at the University of Michigan ... Photofrin along with iron oxide into nanoparticles that would ...
... soul," corneas are the panes in those windows. They shield ... the eye's outermost lens, contributing up to 75 percent of ... at the annual meeting of the American Chemical Society, chemical ... that's finding its way into artificial corneas. It's a hydrogel, ...
... in monoclonal antibody research for oncology offers a ... of antibody therapies against solid tumors. Writing in ... http://www.interscience.wiley.com/cancer-newsroom ), a peer-reviewed journal of the American ... of cancers involve solid tumors, but only 25 ...
Cached Biology News:U-M researchers use nanoparticles to target brain cancer 2U-M researchers use nanoparticles to target brain cancer 3An artificial cornea is in sight, thanks to biomimetic hydrogels 2An artificial cornea is in sight, thanks to biomimetic hydrogels 3An artificial cornea is in sight, thanks to biomimetic hydrogels 4Report calls for improved monoclonal antibodies against solid tumors 2
(Date:7/28/2015)... July 28, 2015 /PRNewswire/ - Aeterna Zentaris Inc. (NASDAQ: ... it has granted to German life sciences entrepreneurs ... and commercialization of biotechnology (collectively, the "Optionee"), an ... allogenic tumor vaccine technology (the "Technology"), including AEZS-120, ... which is ready to enter a Phase 1 ...
(Date:7/27/2015)... CHICAGO and FRANKLIN, Tenn. ... Inc. ("Capella"), a privately-owned  premier provider of health care ... companies in the U.S., today announced that its ... has signed a definitive agreement with Medical Properties ... the acquisition of Capella for $900 million in cash.  The ...
(Date:7/27/2015)... MONTREAL , July 27, 2015   ... that produces sustainable biological accelerators for farmers, has ... Patent and Trademark Office for its patent application ... that accelerate plant growth and enhance yields on ... patent relates to Inocucor,s live IN-M1 microbial consortium ...
(Date:7/27/2015)... 27, 2015 Junto Health, a company that ... and develop new technology solutions, today announced the launch ... a leader in health care policy consulting. Working together ... a collaborative innovation process while, at the same time, ... public policy, health care finance and the delivery of ...
Breaking Biology Technology:Aeterna Zentaris Grants Option to Develop and Commercialize Oral Allogenic Cancer Vaccine Technology 2Aeterna Zentaris Grants Option to Develop and Commercialize Oral Allogenic Cancer Vaccine Technology 3Capella 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. 5Inocucor Technologies Receives Groundbreaking U.S. Patent for Proprietary Biological Processes that Stimulate Plant Growth 2Inocucor Technologies Receives Groundbreaking U.S. Patent for Proprietary Biological Processes that Stimulate Plant Growth 3Junto Health Announces a Unique Partnership with Sachs Policy Group 2Junto Health Announces a Unique Partnership with Sachs Policy Group 3Junto Health Announces a Unique Partnership with Sachs Policy Group 4
... PHILADELPHIA Humans produce billions of clot-forming platelets every ... of them, such as with certain diseases or during ... that a single drug can induce bone marrow cells ... produce. Jae-Won Shin, a graduate student of pharmacology ...
... nanotubes, developed by MIT researchers, shows promise as an innovative ... Storing the sun,s heat in chemical form rather ... in a heavily insulated container has significant advantages, since ... periods of time without losing any of its stored energy. ...
... 13, 2011 International Isotopes Inc. (OTC Bulletin ... is pleased to announce it has selected Parsons ... management services firm, as the prime contractor for ... facility in Lea County, New Mexico.   The ...
Cached Biology Technology:Penn researchers show single drug and soft environment can increase platelet production 2Penn researchers show single drug and soft environment can increase platelet production 3MIT research update: New way to store sun's heat 2MIT research update: New way to store sun's heat 3International Isotopes Inc. Announces the Selection of Parsons as the Lead Design-Build Contractor for the Proposed Depleted Uranium De-Conversion Facility 2International Isotopes Inc. Announces the Selection of Parsons as the Lead Design-Build Contractor for the Proposed Depleted Uranium De-Conversion Facility 3International Isotopes Inc. Announces the Selection of Parsons as the Lead Design-Build Contractor for the Proposed Depleted Uranium De-Conversion Facility 4
... If particles in the submicron range ... development process, measurement and control of particle ... an analyzer that can reliably detect the ... The N5 Submicron Particle Size Analyzer uses ...
... High, 400 ng IgG/cm 2 (1cm2 ... Hydrophobic/Ionic , Performance Certified: Well-to-Well, CV =3% ... Well Volume: 360 µl , Packaging: 5 ... Special optically clear polystyrene formulation , High ...
... Second Mitochondria Derived Activator of Caspase/DIABLO ... pH 7.5 AVOID FREEZE/THAW CYCLES. Amino acid residues ... carboxy terminal His•Tag ® sequence was expressed ... Smac/DIABLO is released along with cytochrome c ...
... JASCO offers a dedicated system for ... modular LC-1500 series of HPLC instrumentation. JASCO ... enhance the capability of the system: ,- ... chromatography and extraction procedures using carbon dioxide ...
Biology Products: