Navigation Links
New simulation shows consequences of a world without Earth's natural sunscreen
Date:3/19/2009

The year is 2065. Nearly two-thirds of Earth's ozone is gone -- not just over the poles, but everywhere. The infamous ozone hole over Antarctica, first discovered in the 1980s, is a year-round fixture, with a twin over the North Pole. The ultraviolet (UV) radiation falling on mid-latitude cities like Washington, D.C., is strong enough to cause sunburn in just five minutes. DNA-mutating UV radiation is up 650 percent, with likely harmful effects on plants, animals and human skin cancer rates.

Such is the world we would have inherited if 193 nations had not agreed to ban ozone-depleting substances, according to atmospheric chemists at NASA's Goddard Space Flight Center, Greenbelt, Md., Johns Hopkins University, Baltimore, and the Netherlands Environmental Assessment Agency, Bilthoven.

Led by Goddard scientist Paul Newman, the team simulated "what might have been" if chlorofluorocarbons (CFCs) and similar chemicals were not banned through the treaty known as the Montreal Protocol. The simulation used a comprehensive model that included atmospheric chemical effects, wind changes, and radiation changes. The analysis has been published online in the journal Atmospheric Chemistry and Physics.

"Ozone science and monitoring has improved over the past two decades, and we have moved to a phase where we need to be accountable," said Newman, who is co-chair of the United Nations Environment Programme's Scientific Assessment Panel to review the state of the ozone layer and the environmental impact of ozone regulation. "We are at the point where we have to ask: Were we right about ozone? Did the Montreal Protocol work? What kind of world was avoided by phasing out ozone-depleting substances?"

Ozone is Earth's natural sunscreen, absorbing and blocking most of the incoming UV radiation from the sun and protecting life from DNA-damaging radiation. The gas is naturally created and replenished by a photochemical reaction in the upper atmo
'/>"/>

Contact: Sarah DeWitt
sarah.l.dewitt@nasa.gov
301-286-0535
NASA/Goddard Space Flight Center
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. New open-source software permits faster desktop computer simulations of molecular motion
2. ORNL supercomputer simulation wins prize for fastest-running science application
3. Rhode Island Hospital simulation center examines benefits and applications of medical simulation
4. Simulations help explain fast water transport in nanotubes
5. Actor-robots staff part of new $5M simulation training center
6. Are existing large-scale simulations of water dynamics wrong?
7. Computer simulations point to key molecular basis of cystic fibrosis
8. Virtual human in HIV drug simulation
9. Simulation reveals how body repairs balance after damage
10. Pilot study shows effectiveness of new, low-cost method for monitoring hand hygiene compliance
11. AJCN study shows moderate alcohol consumption related to stronger bones
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2014)... systems are good examples of complex systems. Their ... networkincluding water for cooling, transport to supply fuel, ... step in the network chain is interconnected with ... dependent. A team of UK-based scientists has studied ... The findings have been published in EPJ B ...
(Date:8/28/2014)... More than 25 million kilometres of new roads will ... will slice into Earth,s last wildernesses, where they bring ... , Now, an ambitious study has created a ... to try to balance the competing demands of development ... an ,environmental-values, layer that estimates that natural importance of ...
(Date:8/28/2014)... to alert the world to Global Warming, has called ... stored underground. He says that Carbon Capture, combined with ... to avoid global warming getting out of control over ... York) made the call during his presentation to the ... are meeting to discuss Carbon Capture and Storage. ...
Breaking Biology News(10 mins):Inter-dependent networks stress test 2Study shows where on the planet new roads should and should not go 2Study shows where on the planet new roads should and should not go 3Global warming pioneer calls for CO2 to be taken from atmosphere and stored underground 2
... are simple: it is all about watching the kid nearest ... Researchers at the mathematics department at Uppsala University, together with ... rules when traveling in small shoals. Some of the ... the collective motion of fish schools and shoals. In ...
... a haven for migratory birds, vacationers and fishermen. Today ... among America,s more disturbing Superfund sites. Here, ... at Arizona State Universityand collaborator Nancy Denslow at the ... designed to measure contaminants with unprecedented precision, accuracy and ...
... WOODS HOLE, MADevelopmental biologist Eric H. Davidson, a longtime ... awarded the prestigious 2011 International Prize for Biology from ... Davidson will be honored for his work on gene ... the Japanese Academy in Tokyo on November 28 in ...
Cached Biology News:Fish follow the rules to school 2Troubled waters: New device brings flexibility, precision to contamination measurement 2Troubled waters: New device brings flexibility, precision to contamination measurement 3Troubled waters: New device brings flexibility, precision to contamination measurement 4Marine Biological Laboratory Course Director Eric Davidson awarded International Prize for Biology 2
(Date:8/28/2014)... month, executives from clinical trial marketing firm BBK Worldwide will ... Patient-Centered Clinical Trials 2014 , to be held at the ... 4-5. Patient recruitment experts Bonnie A. Brescia , ... insights on the benefits of employing an effective patient engagement ... to mobile apps – can be used to drive study ...
(Date:8/28/2014)... TALLAHASSEE, Fla. Exciting new work by a Florida ... molecular system that can take your temperature, emit white ... , And, the molecule looks like a butterfly. , ... and Biomedical Engineering in the FAMU-FSU College of Engineering, ... ago, but has continued to discover that his creation ...
(Date:8/28/2014)... 28, 2014 PrimeSource Building Products, ... selected SoundConnect to support their communication ... audio and web conferencing platform GlobalMeet powered by ... employees’ needs. SoundConnect delivers award winning “results ... Building Products will be utilizing GlobalMeet powered ...
(Date:8/27/2014)... Green & Grow Inc. (GGI) has raised an ... Otter Capital as a significant new partner. Otter Capital’s ... Agriplier™ technology, building on recent compelling field trial results ... meeting, we have been impressed with Otter Capital’s knowledge ... Sobba, President and CEO of GGI. “We look forward ...
Breaking Biology Technology:BBK Worldwide Leads Sessions at Key September Events 2Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices 2PrimeSource Chooses SoundConnect as Collaboration Provider 2Green & Grow Inc. Secures $6M Series B Funding from Otter Capital 2Green & Grow Inc. Secures $6M Series B Funding from Otter Capital 3
... NATICK, Mass. and SAN DIEGO, May 28 ... Inc. (Nasdaq: CRYO ) today,announced that Boston ... follows the definitive agreement announced on April 16.,Under ... CryoCor,shares are entitled to receive $1.35 per share ...
... National Stem Cell,Holding, Inc. (OTC: NHGI - News) ... name to Proteonomix, Inc. The change will also entail ... stated: "Our new name reflects the fact,that we are ... the commercialization of our technologies. These technologies,relate in great ...
... Global Corporate Finance, Management and ... Manufacturing Experience -, ... announced today the appointment of Gordon H.,Busenbark to the company,s ... officer of Xytis Pharmaceuticals, a privately,held development-stage specialty pharmaceuticals company ...
Cached Biology Technology:Boston Scientific Completes Acquisition of CryoCor 2Boston Scientific Completes Acquisition of CryoCor 3National Stem Cell Holding, Inc. Announces the Change of Its Name to Proteonomix, Inc. 2National Stem Cell Holding, Inc. Announces the Change of Its Name to Proteonomix, Inc. 3Nventa Appoints Gordon H. Busenbark to Board of Directors 2
Gridded Cell Culture Petri Dish (20 mm molded in base), tissue-culture treated...
Chicken Anti-Human DNA-directed RNA Polymerase II 7.6 Kd Polypeptide (POLR2L Polyclonal AntibodyOther Sub-Family: not assigned-Other Applications: ELISA, Western Blot...
... RPMI 1640 with 2 mM L-glutamine and harvested ... order to keep the antigens in their native ... cells are arrayed on a 12-well (5 mm) ... treated to enhance cellular attachment and to minimize ...
...
Biology Products: