HOME >> BIOLOGY >> NEWS
Major Set-Back To Ozone Layer Recovery

Recovery of the ozone layer is likely to take years longer than expected, CSIRO scientists warn. Latest research shows that global emissions of a key ozone-depleting halon are 50 per cent greater than previously supposed, says Dr Paul Fraser of CSIRO Atmospheric Research.

Emissions of halon-1211, a fire retardant, are increasing at the rate of approximately 200 tonnes per year, based on measurements in the atmosphere made in Tasmania.

Until now, Montreal Protocol calculations assumed that halon-1211 had peaked in 1988. In fact, emissions have since risen by about 25 per cent. Halon-1211 is one of the three ozone-destroying halons that the Protocol seeks to control. Current emissions make it the most damaging of the halons.

The finding on halon-1211 has been made by Dr Paul Fraser from CSIRO Atmospheric Research and UK colleagues. The team measured the halon levels in CSIRO's unique archive of pristine air collected at the Cape Grim baseline air pollution station in north-western Tasmania.

"Halons are now responsible for about 20 per cent of global ozone destruction. The continued growth of halon-1211 could be due to increased legal manufacture and release in China," says Dr Fraser.

China is responsible for about 90 per cent of the world's production of halon-1211. Under the Montreal Protocol, designed to protect the ozone layer, developing countries such as China have until the year 2010 before they must completely phase out halon production.

"I anticipate that China will begin reducing halon production soon," says Dr Fraser. "Montreal Protocol calculations based on production data indicate that halon levels in the air will stabilise during the next few years. Unfortunately, growth of halon-1211 is likely to delay this stabilisation by years."

While concentrations of most of the ozone-damaging CFCs are either steady or falling, halon levels continue to rise.

The research team led by Dr Fraser includes scientists from the University of E
'"/>

Contact: Paul Holper
paul.holper@dar.csiro.au
61-3-9239-4661
CSIRO Australia
4-Mar-1999


Page: 1 2

Related biology news :

1. Major scientific discovery in cancer research to be honored
2. Major U.S. environmental policy bears scrutiny in midlife
3. Major boost for European zebrafish research
4. Major mutations, not many small changes, might lead way to new species
5. Major new finding on genetics of Parkinsons disease zeroes in on activity of alpha synuclein
6. Major stress during pregnancy linked to autism
7. Major fossil find reveals Asian origins of salamanders
8. Major unique new study shows infrequent inspections lead to greater stream pollution
9. Major new initiative to resolve structure of protein families
10. Major air pollution study launched
11. Major grant to aid McGill University professors efforts to improve school science teaching

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Major Set Back Ozone Layer Recovery

(Date:7/31/2014)... studies have shown that marine noise can affect animal ... the Universities of Bristol and Exeter and the cole ... demonstrated that boat noise stops embryonic development and increases ... the sea slug Stylocheilus striatus used in ... away and later feed on toxic alga but this ...
(Date:7/30/2014)... A deep-sea octopus protected and tended her eggs until ... published July 30, 2014 in the open-access journal ... Aquarium Research Institute and colleagues. , Octopuses typically have ... females protect and take care of their fertilized eggs ... eggs for 1 to 3 months, but little is ...
(Date:7/30/2014)... University of Helsinki and the Universitat Autnoma de Barcelona ... changes which have taken millions of years to occur. ... of mice teeth, induced in the laboratory, scientists have ... observed in the fossil registry of rodent species which ... To modify the development of their teeth, the team ...
Breaking Biology News(10 mins):Boat noise impacts development and survival of sea hares 2Deep-sea octopus has longest-known egg-brooding period 2Scientists reproduce evolutionary changes by manipulating embryonic development of mice 2
(Date:7/31/2014)... 31, 2014 According to a ... Dots Market - Global Industry Analysis, Size, Share, Growth, ... valued at USD 88.5 million in 2011, which is ... at a CAGR of 53.8% from 2013 to 2023. ... at  http://www.transparencymarketresearch.com/quantum-dots.html Increasing demand for energy ...
(Date:7/31/2014)... -- Research and Markets has announced the ... report to their offering. ... the genetic material or genomes of an organism. It ... discovery and development of diagnostic and therapeutic solutions for ... is supported by three major product segments: Instruments, Consumables, ...
(Date:7/31/2014)... Calif. (PRWEB) July 31, 2014 Held ... diagnosed patients with an overview of the disease and ... of drug side effects, as well as updates on ... grateful to Dr. Sandy Srinivas for organizing this educational ... of kidney cancer. “Sandy and her colleagues have put ...
(Date:7/31/2014)... BOTHELL, Wash. , July 31, 2014   ... a leading developer, manufacturer and marketer of proprietary clinical ... media and precision thermal shipping products ... Company,s second quarter 2014 financial results will be released ... will host a conference call and live webcast at ...
Breaking Biology Technology:Global Quantum Dots Market is Expected to Reach USD 8,246.8 Million in 2023: Transparency Market Research 2Global Quantum Dots Market is Expected to Reach USD 8,246.8 Million in 2023: Transparency Market Research 3Global Quantum Dots Market is Expected to Reach USD 8,246.8 Million in 2023: Transparency Market Research 4Global Genomics Market 2014-2018: Key Vendors are F. Hoffmann-La Roche, Life Technologies, Qiagen and Illumina 2BioLife Solutions to Report Financial Results for Second Quarter 2014 and Provide Business Update on August 7, 2014 2
Cached News: