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:5/21/2017)... ... May 19, 2017 , ... ... educational conference of the American Association of Bioanalysts (AAB) and the College of ... Houston. The conference reinforces AAB’s commitment to excellence in clinical laboratory services and ...
(Date:5/19/2017)... ... May 19, 2017 , ... The University City Science ... technologies ripe for commercialization, and who are affiliated with the 21 partner academic ... proposals. QED, now in its tenth round, is the first multi-institutional proof-of-concept program ...
(Date:5/18/2017)... ... 16, 2017 , ... Clinical Supplies Management (“CSM”), a Great Point Partners II ... grow. CSM has doubled in size over the past six months with the ... , Roger Gasper joins CSM as Chief Financial Officer. Roger has over 25 ...
(Date:5/18/2017)... ... 2017 , ... Cognition Corporation ( http://www.cognition.us ), ... version 9.0 of the Cognition Cockpit platform. , “Our whole team has put ... CEO of Cognition. “We’re thrilled to finally be able to release it to ...
Breaking Biology Technology:
(Date:4/13/2017)... , April 13, 2017 According to a ... Identity Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment ... the IAM Market is expected to grow from USD 14.30 Billion in ... Rate (CAGR) of 17.3%. ... MarketsandMarkets Logo ...
(Date:4/11/2017)... , April 11, 2017 No ... but researchers at the New York University Tandon ... of Engineering have found that partial similarities between ... systems used in mobile phones and other electronic ... The vulnerability lies in the fact ...
(Date:4/5/2017)... 2017  The Allen Institute for Cell Science today ... one-of-a-kind portal and dynamic digital window into the human ... first application of deep learning to create predictive models ... and a growing suite of powerful tools. The Allen ... future publicly available resources created and shared by the ...
Breaking Biology News(10 mins):