Navigation Links
NASA pinpoints causes of 2011 Arctic ozone hole
Date:3/11/2013

A combination of extreme cold temperatures, man-made chemicals and a stagnant atmosphere were behind what became known as the Arctic ozone hole of 2011, a new NASA study finds.

Even when both poles of the planet undergo ozone losses during the winter, the Arctic's ozone depletion tends to be milder and shorter-lived than the Antarctic's. This is because the three key ingredients needed for ozone-destroying chemical reactions chlorine from man-made chlorofluorocarbons (CFCs), frigid temperatures and sunlight are not usually present in the Arctic at the same time: the northernmost latitudes are generally not cold enough when the sun reappears in the sky in early spring. Still, in 2011, ozone concentrations in the Arctic atmosphere were about 20 percent lower than its late winter average.

The new study shows that, while chlorine in the Arctic stratosphere was the ultimate culprit of the severe ozone loss of winter of 2011, unusually cold and persistent temperatures also spurred ozone destruction. Furthermore, uncommon atmospheric conditions blocked wind-driven transport of ozone from the tropics, halting the seasonal ozone resupply until April.

"You can safely say that 2011 was very atypical: In over 30 years of satellite records, we hadn't seen any time where it was this cold for this long," said Susan E. Strahan, an atmospheric scientist at NASA Goddard Space Flight Center in Greenbelt, Md., and main author of the new paper, which was recently published in the Journal of Geophysical Research-Atmospheres.

"Arctic ozone levels were possibly the lowest ever recorded, but they were still significantly higher than the Antarctic's," Strahan said. " There was about half as much ozone loss as in the Antarctic and the ozone levels remained well above 220 Dobson units, which is the threshold for calling the ozone loss a 'hole' in the Antarctic so the Arctic ozone loss of 2011 didn't constitute an ozone hole."

The majority of o
'/>"/>

Contact: Maria-Jose Vinas
maria-jose.vinasgarcia@nasa.gov
301-614-5883
NASA/Goddard Space Flight Center
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Culturally sensitive research in United Arab Emirates pinpoints indoor air quality risks
2. Its in the genes: Research pinpoints how plants know when to flower
3. Computer model pinpoints prime materials for efficient carbon capture
4. U OF A expert pinpoints nutrient behind fresh water algae blooms
5. University of Maryland School of Medicine, NIH study pinpoints brain areas role in learning
6. Research pinpoints key gene for regenerating cells after heart attack
7. Study pinpoints, prevents stress-induced drug relapse in rats
8. Record-breaking grant: New research project to investigate the causes of mental disorders
9. Long-term research reveals causes and consequences of environmental change
10. Glycogen accumulation in neurons causes brain damage and shortens the lives of flies and mice
11. Zebrafish provide insights into causes and treatment of human diseases
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
NASA pinpoints causes of 2011 Arctic ozone hole
(Date:11/21/2014)... Wash. , Nov. 20, 2014 C-Labs ... for the Internet of Things (IoT), today announced the ... of chief operating officer. Previously a strategic advisor to ... finance, and operations. Mr. Traynor is based out of ... . He reports to Chris Muench , Chief ...
(Date:11/18/2014)...   News Highlights: ... The Partners Data Lake, an agile data and ... will allow researcher and clinicians to explore and ... lives of patients , The Partners Data ... the Partners system, breaking down physical barriers for ...
(Date:11/15/2014)... YORK , Nov. 13, 2014  While we may ... technology Doctor McCoy used in "Star Trek" to gain instant ... tools designed to work with smartphones and tablets for monitoring ... of the healthcare world. This may seem a tad Orwellian ... ready to adopt some of these technological opportunities into their ...
Breaking Biology News(10 mins):C-Labs Names Former Microsoft and Bsquare Executive as Chief Operating Officer 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5Americans May Be Ready for a Brave New World of Healthcare 2Americans May Be Ready for a Brave New World of Healthcare 3Americans May Be Ready for a Brave New World of Healthcare 4
... Registration is now open for Disease Models & ... Mechanisms. This one-day Symposium will ... and disease processes at the cellular and whole-organism ... be used to address this issue. It is ...
... flower, created by the union of two foreign plant species, ... Genetic changes in this attractive yellow-flowered hybrid have allowed it to ... new species that has originated in the wild in the last ... to have originated in this way, yet only a handful of ...
... A San Francisco State University biologist has released the ... bee populations and has found low numbers of bees in ... habitat loss is one of the primary reasons for sharp ... Now the researcher plans to add to her data ...
Cached Biology News:Rare glimpse into the origin of species 2SF State researcher releases first results from nationwide bee count 2SF State researcher releases first results from nationwide bee count 3
(Date:12/19/2014)... REDWOOD CITY, Calif. , Dec. 19, 2014 ... , USA) announced today that they have been ... Technologies 1,2 is a privately held company that ... processing of next generation sequencing (NGS) data for the ... into the Roche Sequencing Unit, and will continue to ...
(Date:12/19/2014)... (PRWEB) December 18, 2014 Today, ... locate its pilot production facility and future company ... and produce innovative new materials that safely and ... not only because of its historic, strong support ... efforts to attract leading edge, technology-based companies such ...
(Date:12/19/2014)... iLab Solutions, the global leader in core facility ... the new Director of Institutional Implementations and Sarah Becker ... new leadership positions were created to support iLab’s mission ... continues to meet the needs of its growing customer ... been deployed at over 450 core facilities across more ...
(Date:12/19/2014)... BURLINGTON, Mass. , Dec. 18, 2014  Decision ... dental biomaterial market will grow moderately through ... implant procedures and growing awareness of dental biomaterials all ... underdeveloped markets such as China ... incomes will bring dental procedures within reach for a ...
Breaking Biology Technology:Bina Technologies is acquired by Roche. 2Bina Technologies is acquired by Roche. 3Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 2Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 3Technology Company TiFiber™ to Establish Production Facility in Fort Smith, Arkansas with Support from Local Investors 4iLab Solutions Announces Two New Leadership Positions to Meet the Needs of Its Growing Customer Base 2Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 2Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 3
... NESS ZIONA, Israel, August 24 Foamix ... gynecology, announced today,that it has been awarded US Patent ... foam compositions, suitable for the,treatment of heat and chemical ... Dr. Dov Tamarkin, the Company,s CEO stated, ...
... This ... about how -- or even whether -- invasive saltcedar should be controlled. The Society ... natural ecosystems and carefully weigh the impact of our decisions. , ... Lawrence, KS (PRWEB) August 24, 2009 -- Saltcedar (Tamarix ...
... TONBRIDGE, England, Aug. 21 Pharmacists have branded government ... after the profession was excluded from the first wave of healthcare ... week health secretary Andy Burnham announced the list of priority patient ... However, the Department of Health [DH] list of "frontline health ...
Cached Biology Technology:Foamix Receives US Patent on Novel Foam Technology 2Invasive Saltcedar Triggers Lively Debate among Weed Scientists and Land Managers 2Invasive Saltcedar Triggers Lively Debate among Weed Scientists and Land Managers 3Chemist+Druggist Reveals Frontline NHS Staff Won't Get Swine Flu Vaccine 2