HOME >> MEDICINE >> NEWS
Ozone recovering, but unlikely to stabilize at pre-1980 levels, says study

While Earth's ozone layer is slowly being replenished following an international 1987 agreement banning CFCs, the recovery is occurring in a changing atmosphere and is unlikely to stabilize at pre-1980 levels, says a new University of Colorado at Boulder study.

The recovery is a result of the 1987 Montreal Protocol banning chlorine pollutants from the atmosphere, said Betsy Weatherhead, a researcher with the Cooperative Institute for Research in Environmental Sciences, a joint institute of CU-Boulder and the National Oceanic and Atmospheric Administration. But by the end of the century, ozone levels could be slightly higher or slightly lower than before 1980 because of high natural variability and human caused changes like warming temperatures, said Weatherhead.

A paper by Weatherhead and Signe Bech Andersen of the Danish Meteorological Institute in Copenhagen is featured on the cover of the May 4 issue of Nature.

"We now have some confidence that the ozone layer is responding to the decreases in chlorine levels in the atmosphere due to the leveling off and decrease of CFCs, and most of the improvements are in agreement with what we had hoped for with the Montreal Protocol in place," she said. "But we are not out of the woods yet, and the ozone recovery process still faces a number of uncertainties."

At high latitudes, for example, warmer temperatures at Earth's surface can trigger colder conditions in the lower stratosphere and promote the formation of polar stratospheric clouds, which can contribute to severe ozone depletion. "During the next few years, ozone levels in the Arctic will be strongly influenced by stratospheric temperature, possibly resulting in delayed recovery or record-low observations," the authors wrote in Nature.

The new study shows a larger than expected recovery of ozone in the northern mid-latitudes in recent years, she said. The increase may be partially a result of natural variability, includ
'"/>


3-May-2006


Page: 1 2 3

Related medicine news :

1. Just breathe: Ozone forecaster unveiled at University of Houston, available via Web
2. Offenders unlikely to seek help when experiencing mental distress
3. Effects of new sleep medication appear unlikely to have potential for abuse or cognitive impairment
4. Search for cancer genes unlikely to succeed, say experts
5. Nearly half of public health employees unlikely to work during pandemic
6. Exercise unlikely to cause sudden cardiac death in women
7. Medical experts: US unlikely to have enough vaccines to stop avian flu
8. Access to antiretrovirals unlikely to reduce HIV infection rates
9. Anti-HIV drugs unlikely to stop HIV spread
10. Study finds some people in pain unlikely to seek treatment
11. Consumption of omega-3 fatty acids unlikely to significantly reduce risk of cancer

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Ozone recovering but unlikely stabilize pre levels says study

(Date:2/26/2015)... (PRWEB) February 26, 2015 Dr. Parsa Mohebi, ... his hair transplant contest winner’s surgery on Friday, ... winner Marc R., is all set to receive his grand ... ARTAS system. His procedure will be done on a live ... To watch the surgery, go to the website and experience ...
(Date:2/26/2015)... Ore. (PRWEB) February 26, 2015 ... services, celebrated its launch to its first customer ... employees and their covered dependents. , SpendWell ... health care services, combining real-time price transparency with ... a variety of routine health care services and ...
(Date:2/26/2015)... A Beautiful Smile Dentistry is celebrating 50 ... following 50 year celebration specials to their patients. ... Care Diamond Clean or the Braun Oral B 7000 ... is $2895 for the Invisalign special (this is for ... procedures are priced accordingly). The practice is offering ...
(Date:2/26/2015)... 26, 2015 A tummy tuck and ... two different things—but they can be combined to great ... tuck with liposuction, Michigan’s Dr. Pramit Malhotra calls the ... grow in popularity by 50 percent in the last ... patients seeking to combine the two? First, it helps ...
(Date:2/26/2015)... KnowNote ” was featured on NewsWatch as part of its ... on the iOS, Android, and Windows markets. Andrew Tropeano, a ... review and shared with viewers how this application teaches users ... Learning a musical instrument can be difficult. And nearly ... something they already know and use to learn music and ...
Breaking Medicine News(10 mins):Health News:Hair Transplant Contest Winner’s Surgery to be Streamed LIVE 2Health News:SpendWell Launches New Online Health Care Marketplace to Large Employer Group 2Health News:SpendWell Launches New Online Health Care Marketplace to Large Employer Group 3Health News:A Beautiful Smile Dentistry is Celebrating 50 Years in Practice! 2Health News:A Beautiful Smile Dentistry is Celebrating 50 Years in Practice! 3Health News:Dr. Pramit Malhotra Reports a Rise in Patients Combining Liposuction and Tummy Tuck in Michigan, Citing the “Power LipoTuck” 2Health News:Dr. Pramit Malhotra Reports a Rise in Patients Combining Liposuction and Tummy Tuck in Michigan, Citing the “Power LipoTuck” 3Health News:A Modern Way to Learn Music was Featured on NewsWatch Television on January 30, 2015 2
(Date:2/26/2015)... 26, 2015  Spring Bank Pharmaceuticals, Inc., a ... treatment of virus infections, today announced that ... Vice President of Finance, a newly created role. ... administrative activities, including financial planning and reporting, accounting ... J. Jensen , President and CEO. ...
(Date:2/26/2015)... , Feb. 26, 2015 The market ... is estimated at 2.4 billion in ... population growth, government insurance, newly insured patients and ... region and will continue to propel demand.  The healthcare ... into the market and interviews with IVD manufacturers ...
(Date:2/26/2015)... 2015 Columbia Laboratories, Inc. (Nasdaq: ... specialty pharmaceutical company focused on the development of ... Phase II clinical trial for COL-1077, a lidocaine ... endometrial biopsy in the second quarter of 2015. ... feedback from the United States Food and Drug ...
Breaking Medicine Technology:Jonathan P. Freve, CPA, Joins Spring Bank Pharmaceuticals as Vice President of Finance 2Kalorama: Led by Brazil, IVD Test Market in Latin America Exceeds 2 Billion 2Kalorama: Led by Brazil, IVD Test Market in Latin America Exceeds 2 Billion 3Kalorama: Led by Brazil, IVD Test Market in Latin America Exceeds 2 Billion 4Columbia Laboratories to Initiate a Phase II Clinical Trial for COL-1077, Lidocaine Bioadhesive 10% Gel, in the Second Quarter of 2015 2Columbia Laboratories to Initiate a Phase II Clinical Trial for COL-1077, Lidocaine Bioadhesive 10% Gel, in the Second Quarter of 2015 3
Cached News: