Navigation Links
Potent greenhouse gas more prevalent in atmosphere than previously assumed
Date:10/23/2008

ive to perfluorocarbons, which are also potent greenhouse gases, because it was believed that no more than 2 percent of the NF3 used in these processes escaped into the atmosphere.

The Scripps team analyzed air samples gathered over the past 30 years, working under the auspices of the NASA-funded Advanced Global Atmospheric Gases Experiment (AGAGE) network of ground-based stations. The network was created in the 1970s in response to international concerns about chemicals depleting the ozone layer. It is supported by NASA as part of its congressional mandate to monitor ozone-depleting trace gases, many of which are also greenhouse gases. Air samples are collected at several stations around the world. The Scripps team analyzed samples from coastal clean-air stations in California and Tasmania for this research.

The researchers found concentrations of the gas rose from about 0.02 parts per trillion in 1978 to 0.454 parts per trillion in 2008. The samples also showed significantly higher concentrations of NF3 in the Northern Hemisphere than in the Southern Hemisphere, which the researchers said is consistent with its use predominantly in Northern Hemisphere countries. The current observed rate of increase of NF3 in the atmosphere corresponds to emissions of about 16 percent of the amount of the gas produced globally.

In response to the growing use of the gas and concerns that its emissions are not well known, scientists have recently recommended adding it to the list of greenhouse gases regulated by Kyoto.

"As is often the case in studying atmospheric emissions, this study shows a significant disagreement between 'bottom-up' emissions estimates and the actual emissions as determined by measuring their accumulation in the atmosphere," Weiss said. "From a climate perspective, there is a need to add NF3 to the suite of greenhouse gases whose production is inventoried and whose emissions are regulated under the Kyoto Protocol, thus provi
'/>"/>

Contact: Rob Monroe or Mario Aguilera
scrippsnews@ucsd.edu
858-534-3624
University of California - San Diego
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Pittsburgh scientists identify human source of stem cells with potential to repair muscle
2. Neuronal conduction of excitation without action potentials based on ceramide production
3. To maximize biofuel potential, researchers look for sorghums sweet spot
4. Joslin researchers uncover potential role of leptin in diabetes
5. Chemistry turns killer gas into potential cure
6. Researchers examine worlds potential to produce biodiesel
7. New inhibitor has potential as cancer drug
8. Potential new therapeutic molecular target to fight cancer
9. WCS study finds potential to double tiger numbers in South Asia
10. Childrens Hospital studying drug with the potential to prevent/delay onset of type 1 diabetes
11. Great potential to improve collection, recycling of Europes electronic waste, says UN report
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Potent greenhouse gas more prevalent in atmosphere than previously assumed
(Date:9/18/2014)... in DNA, tiny strands of nucleic acid that contain ... this genetic data, our DNA is copied into RNA ... perform tasks in our cells. , Several years ... Unlike all other known RNAs, this molecule is circular, ... abundant, little has been known about how they are ...
(Date:9/18/2014)... cheerful, happy-go-lucky characters, so you might expect that most ... In fact some dogs are distinctly more pessimistic than ... , "This research is exciting because it measures positive ... It offers researchers and dog owners an insight into ... Dr Melissa Starling, from the Faculty of Veterinary Science. ...
(Date:9/18/2014)... Elsevier, a world-leading provider of scientific, technical and ... Research Management Society (ARMS), recognized the academic research ... Scopus Young Researcher of the Year Awards. , ... National Convention Centre and in conjunction with the ... representing Australia,s and New Zealand,s scientific community. Guest ...
Breaking Biology News(10 mins):Scientists find how mysterious 'circular RNA' is formed, claim muscular dystrophy link 2Dogs can be pessimists too 2Dogs can be pessimists too 3Elsevier and Australasian Research Management Society award scientists at Scopus ceremony 2
... who are serious about wanting to reduce their "carbon footprint" ... may yield a large long-term benefit have one less ... concluded that in the United States, the carbon legacy and ... times more important than some of the other environmentally sensitive ...
... A collaborative team led by a University of Hawai,i at ... slug species that are of potential threat to the nation,s ... in the U.S. The July 2009 article in the ... Robert H. Cowie of the UH Manoa Center for Conservation ...
... that could let in more light and cut indoor ... Tropical regions without losing the cooling effect of shades. ... Engineering Systems Modelling and Simulation this month. ... Resources and Development, at the Asian Institute of Technology ...
Cached Biology News:Family planning a major environmental impact 2Opening a new window on daylight 2
(Date:9/18/2014)... 18, 2014 ... ) has announced the addition of ... Strategic Business Report" report to ... report analyzes the worldwide markets for ... the following Product Segments: Polymeric Materials, ...
(Date:9/18/2014)... Sept. 18, 2014 Research and Markets ... Human Albumin Industry Report 2014" report to their ... Report 2014 is a professional and in-depth study on ... The report provides a basic overview of ... structure. The human albumin market analysis is provided for ...
(Date:9/18/2014)... 18, 2014  Neogen Corporation (Nasdaq: NEOG ... strategic agreement with Merck Animal Health to market Neogen,s ... The Igenity Dairy Heifer Program consists of genomic tests ... genetic potential of replacement dairy heifers. The genomic tests ... and is an excellent tool in the decision-making process ...
(Date:9/18/2014)... September 18, 2014 SeqLL Inc., ... (tSMS™) technology, announced today the closing of a ... led by Genomic Diagnostic Technologies, will increase the ... applications. , Founded in March 2013 by Daniel ... Analyst at Helicos BioSciences, SeqLL has continued to ...
Breaking Biology Technology:Biocompatible Materials - Global Strategic Business Report 2014 2Biocompatible Materials - Global Strategic Business Report 2014 3Global Human Albumin Industry Report 2014 2Global Human Albumin Industry Report 2014 3Merck Animal Health to market Neogen's dairy genomic program 2SeqLL Closes Series-A Funding Round for Expansion of Single Molecule Sequencing 2
... ,Courage Under Fire, WORCESTER, Mass., Aug. 21 ... is proud to announced that Dr.,Robert Lanza, the ... been recognized for his research and contributions to ... of PharmaVOICE (cover,story July/August issue). Dr. Lanza is ...
... Efficiency, MINNEAPOLIS, Aug. 21 Vital ... provider of enterprise-wide advanced,visualization and analysis solutions, ... enterprise-wide advanced visualization and analysis product,solutions with ... 4.1. This,comprehensive package offers powerful advanced visualization ...
... Calif., Aug. 21 AMDL, Inc. (Amex:,ADL) announced today ... Company had net revenues of $2,413,501, an approximate increase ... had gross profits of $1,151,452,and incurred a net loss ... approximately $2,074,112 for depreciation, common stock,warrants and options issued. ...
Cached Biology Technology:Advanced Cell Technology's Dr. Robert Lanza Makes List of '100 Most Inspiring People in the Life-Sciences Industry' 2Advanced Cell Technology's Dr. Robert Lanza Makes List of '100 Most Inspiring People in the Life-Sciences Industry' 3Vital Images Releases Next Generation Enterprise-Wide Solutions Featuring Vitrea(R) 4.0 and ViTALConnect(R) 4.1 2Vital Images Releases Next Generation Enterprise-Wide Solutions Featuring Vitrea(R) 4.0 and ViTALConnect(R) 4.1 3Vital Images Releases Next Generation Enterprise-Wide Solutions Featuring Vitrea(R) 4.0 and ViTALConnect(R) 4.1 4AMDL Announces 2nd Quarter 2007 Operational Results 2
... Transfer Sulfo SBED Protein:Protein Interaction Reagent ... Transfer has rapidly gained traction as an ... A growing number of publications feature the ... Reagent to study a variety of issues ...
... compact benchtop and stackable multi-function incubator. ... a large display screen to accurately ... circulation inside to evenly distribute temperature ... easily calibrated from the microprocessor controller. ...
... transfer is fast emerging as a powerful ... confirmation. Until now, only amino groups have ... transfer reagents such as our Sulfo-SBED. Sulfhydryl-reactive ... are exciting additions to the protein interaction ...
... designed as a high tech shaker for ... compensation allows high shaking speed even under ... therefore, faster growth and higher cell density. ... high reproducibility is critical Variable ...
Biology Products: