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:8/18/2015)... 2015 Research and Markets ( http://www.researchandmarkets.com/research/9dmm6l/global_biometric ... "Global Biometric Authentication & Identification Market: Focus On ... 2015-2020" report to their offering. ... market is expected to grow at an estimated ... generate over $25 billion (approximately) by 2020 as ...
(Date:8/12/2015)... Aug. 12, 2015  Synaptics Inc. (NASDAQ: ... solutions, today announced that four of its fingerprint ... have officially been named FIDO Certified™ by the ... the certification, Synaptics, Natural ID™ fingerprint solutions are ... Framework (UAF) standard and are interoperable among other ...
(Date:8/6/2015)... and TELTOW, Germany , August 6, ... Conference, SensoMotoric Instruments (SMI) shows the world,s ... , based on Epson,s Moverio BT-200 see-through head ... With this new solution, unprecedented quality and efficiency is ... with context-sensitive displays. For the first time, professionals and ...
Breaking Biology News(10 mins):Global Biometric Authentication & Identification Market 2015: Focus On Modality, Motility & Application - Estimation & Forecasts to 2020 for the $25 Billion Industry 2Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 2Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 3SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 2SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 3
... A new minute freshwater snail species belonging to the genus ... Athens (Canella Radea) in a spring covered by snow on ... access journal Zookeys . The ... shell, grey-black pigmented soft body and a black penis with a ...
... scientists may lead to a pharmaceutical breakthrough for a ... cells that line the inner surfaces of our body,s ... the FASEB Journal ( http://www.fasebj.org ), the ... small-molecule drug candidates which help cells bypass defective channels ...
... how humans develop immunity to malaria, and could ... Dr Alyssa Barry from the Walter and ... using ,protein microarray, technology to screen human blood ... the malaria-causing Plasmodium falciparum parasite. Her research, which ...
Cached Biology News:Scientists discover new drug candidates for cystic fibrosis and other diseases 2'Protein microarrays' may reveal new weapons against malaria 2
(Date:8/26/2015)...  The Diabetes Research Institute (DRI), a Center ... School of Medicine, announced today that the first ... the first time a novel transplant technique for ... Phase I/II study builds upon decades of progress ... first step toward the development of the DRI ...
(Date:8/26/2015)... -- Intrexon Corporation (NYSE: XON ), a leader ... previously announced public offering of common stock, including the ... to purchase an additional 731,707 shares of common stock ...  The exercise of the underwriters, option brought the total ... to 5,609,756 shares and increased the total gross proceeds ...
(Date:8/26/2015)... HONG KONG , Aug. 26, 2015 ... "Company"), China,s leading provider of ... and stem cell storage services, today announced that the ... Holdings Limited ("MO2"), an entity wholly owned by Mr. ... the Company, has acquired the outstanding shares (the "Shares") ...
(Date:8/26/2015)... CORAL SPRINGS, Florida , August 26, 2015 ... one of the biggest factors fueling the optimism ... FDA approvals, M&A,s, collaborations and life sciences advancements.  ... and developments are Pressure BioSciences, Inc. (OTCQB: PBIO), ... Inc. (NASDAQ: SRPT ), Raptor Pharmaceutical Corp. ...
Breaking Biology Technology:Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 2Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 3Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 4Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 2Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 3Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 4China Cord Blood Corporation Receives Notice of Transactions Regarding its 7% Senior Convertible Notes Due 2017 2China Cord Blood Corporation Receives Notice of Transactions Regarding its 7% Senior Convertible Notes Due 2017 3New Collaborations & Mergers For Research of Molecular Biomarkers in Human Diseases & Clinical Trials for Cancer Therapies Fueling Growth in Multi-Billion Dollar Life Sciences Market 2New Collaborations & Mergers For Research of Molecular Biomarkers in Human Diseases & Clinical Trials for Cancer Therapies Fueling Growth in Multi-Billion Dollar Life Sciences Market 3New Collaborations & Mergers For Research of Molecular Biomarkers in Human Diseases & Clinical Trials for Cancer Therapies Fueling Growth in Multi-Billion Dollar Life Sciences Market 4New Collaborations & Mergers For Research of Molecular Biomarkers in Human Diseases & Clinical Trials for Cancer Therapies Fueling Growth in Multi-Billion Dollar Life Sciences Market 5New Collaborations & Mergers For Research of Molecular Biomarkers in Human Diseases & Clinical Trials for Cancer Therapies Fueling Growth in Multi-Billion Dollar Life Sciences Market 6New Collaborations & Mergers For Research of Molecular Biomarkers in Human Diseases & Clinical Trials for Cancer Therapies Fueling Growth in Multi-Billion Dollar Life Sciences Market 7
... Westerners Return from Beijing,s World-Class Stem Cell Treatment ... with Clear Improvement, Giving Hope Not Found ... Puhua Neurosurgical,Hospital, the world,s leading center for effective ... today here announced that four more,international patients returned ...
... Strategic Focus on Growth-Driving Global Products, BASINGSTOKE, ... SHPGY, TSX: SHQ), the global specialty biopharmaceutical,company, announces ... of non core,products to Almirall for a cash ... SOLARAZE(R) (3% gel diclofenac sodium),and VANIQA(R) (eflornithine hydrochloride), ...
... more about the origins of quantum dot blinking, ... National Laboratory, the University of Chicago and the ... to characterize it on faster time scales than ... material, also known as quantum dots, are being ...
Cached Biology Technology:American and European Parkinson's Sufferers Find Chinese Stem Cell Treatment Effective, Proving Western Debates Moot 2American and European Parkinson's Sufferers Find Chinese Stem Cell Treatment Effective, Proving Western Debates Moot 3American and European Parkinson's Sufferers Find Chinese Stem Cell Treatment Effective, Proving Western Debates Moot 4Shire Divests Non-Core Product Portfolio to Almirall 2Shire Divests Non-Core Product Portfolio to Almirall 3Argonne researcher studies what makes quantum dots blink 2
Rabbit polyclonal to WWOX8 ( Abpromise for all tested applications). entrezGeneID: 51741 SwissProtID: Q9NZC7-8...
Goat polyclonal to T7 tag (Agarose) Immunogen: Goats were immunized with MASMTGGQQMG (T7) conjugated to KLH.After multiple immunizations in Freund's adjuvant, serum was collected....
Rabbit polyclonal to Olfactory Receptor LS189744 ( Abpromise for all tested applications)....
Ubiquitin-like protein 4A (Ubiquitin-like protein GDX). [Source:Uniprot/SWISSPROT;Acc:P11441] Antigen: Recombinant Protein Epitope Signature Tag (PrEST)....
Biology Products: