Navigation Links
Ozone hole healing could cause further climate warming
Date:1/25/2010

The hole in the ozone layer is now steadily closing, but its repair could actually increase warming in the southern hemisphere, according to scientists at the University of Leeds.

The Antarctic ozone hole was once regarded as one of the biggest environmental threats, but the discovery of a previously undiscovered feedback shows that it has instead helped to shield this region from carbon-induced warming over the past two decades.

High-speed winds in the area beneath the hole have led to the formation of brighter summertime clouds, which reflect more of the sun's powerful rays.

"These clouds have acted like a mirror to the sun's rays, reflecting the sun's heat away from the surface to the extent that warming from rising carbon emissions has effectively been cancelled out in this region during the summertime," said Professor Ken Carslaw of the University of Leeds who co-authored the research.

"If, as seems likely, these winds die down, rising CO2 emissions could then cause the warming of the southern hemisphere to accelerate, which would have an impact on future climate predictions," he added.

The key to this newly-discovered feedback is aerosol tiny reflective particles suspended within the air that are known by experts to have a huge impact on climate.

Greenhouses gases absorb infrared radiation from the Earth and release it back into the atmosphere as heat, causing the planet to warm up over time. Aerosol works against this by reflecting heat from the sun back into space, cooling the planet as it does so.

Beneath the Antarctic ozone hole, high-speed winds whip up large amounts of sea spray, which contains millions of tiny salt particles. This spray then forms droplets and eventually clouds, and the increased spray over the last two decades has made these clouds brighter and more reflective.

As the ozone layer recovers it is believed that this feedback mechanism could decline in effectiveness, or even be reversed, leading to accelerated warming in the southern hemisphere.

"Our research highlights the value of today's state-of- the-art models and long-term datasets that enable such unexpected and complex climate feedbacks to be detected and accounted for in our future predictions," added Professor Carslaw.

The Leeds team made their prediction using a state-of-the-art global model of aerosols and two decades of meteorological data. The research was funded by the Natural Environment Research Council's Surface Ocean-Lower Atmosphere Study (UK SOLAS) and the Academy of Finland Centre of Excellence Programme.


'/>"/>

Contact: Hannah Isom
h.isom@leeds.ac.uk
44-113-343-4031
University of Leeds
Source:Eurekalert

Related biology technology :

1. Mercy Ships and MediSend International Partner to Deliver Hope and Healing
2. Healing Cancer Through Mind-Body Medicine: The Chopra Center Releases Pioneering DVD for Every Stage of Treatment
3. Final 12 Month Clinical Data from 5,000 Patients in Worldwide e-HEALING Clinical Study Show Good Safety and Efficacy with Real World Use of OrbusNeichs Genous(TM) Bio-engineered R stent(TM)
4. Pergamum to Provide Effective Development of Innovative Dermatology and Wound Healing Companies
5. Omnio Healer Selects Eden Biodesign for cGMP Production of its Candidate Wound Healing and Anti-Infection Treatments
6. Reorganizational Healing Provides Access to Greater Quality of Life, Reduced Stress
7. Environmental Tectonics Corporation Exhibiting at the Annual Symposium on Advanced Wound Care and Wound Healing Society
8. WaferGen Biosystems, ImmuneRegen BioSciences and University of Texas Southwestern Medical Center to Collaborate on Novel Wound Healing Research
9. Interim Analysis of Data from e-HEALING Registry of OrbusNeichs Genous(TM) Bio-engineered R stent(TM) to be Presented at AHA Scientific Sessions 2008
10. Advanced Viral Announces Phase IIb Wound Healing Trial for AVR123
11. Glycotex Reports First Patient Enrollment in Phase IIb Study of Lead Product Candidate GLYC-101 for Wound Healing
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2016)... ... June 23, 2016 , ... Mosio, a leader ... “Clinical Trials Patient Recruitment and Retention Tips.” Partnering with experienced clinical research professionals, ... providing practical tips, tools, and strategies for clinical researchers. , “The landscape of ...
(Date:6/23/2016)... SPRING, Md. , June 23, 2016 A ... collected from the crime scene to track the criminal down. ... and the U.S. Food and Drug Administration (FDA) uses DNA ... Sound far-fetched? It,s not. The ... genome sequencing to support investigations of foodborne illnesses. Put as ...
(Date:6/23/2016)... June, 23, 2016  The Biodesign Challenge (BDC), a ... ways to harness living systems and biotechnology, announced its ... in New York City . ... students, showcased projects at MoMA,s Celeste Bartos Theater during ... , MoMA,s senior curator of architecture and design, and ...
(Date:6/23/2016)... ... 23, 2016 , ... In a new case report published today in STEM ... who developed lymphedema after being treated for breast cancer benefitted from an injection of ... dealing with this debilitating, frequent side effect of cancer treatment. , Lymphedema ...
Breaking Biology Technology:
(Date:6/9/2016)... an innovation leader in attendance control systems is proud to announce the introduction of ... make sure the right employees are actually signing in, and to even control the ... ... ... ...
(Date:6/2/2016)...   The Weather Company , an IBM Business (NYSE: ... capability in which consumers will be able to interact with ... via voice or text and receive relevant information about the ... Marketers have long sought an advertising solution that can create ... relevant and valuable; and can scale across millions of interactions ...
(Date:5/16/2016)... , May 16, 2016   EyeLock LLC ... today announced the opening of an IoT Center of ... strengthen and expand the development of embedded iris biometric ... unprecedented level of convenience and security with unmatched biometric ... one,s identity aside from DNA. EyeLock,s platform uses video ...
Breaking Biology News(10 mins):