Navigation Links
UV exposure has increased over the last 30 years, but stabilized since the mid-1990s
Date:3/16/2010

to skin, a 4.8 percent increase in damage to DNA, a 5 percent increase in Vitamin D production, and less than a percent of increase in plant growth.

"If you go to the beach these days, you're at slightly higher risk of getting skin cancer (without protection)," Herman said, though he noted the risk would have been even greater in the absence of regulations on ozone-depleting substances.

Last year, one of Herman's Goddard colleagues, Paul Newman, published a study showing that the ozone hole likely would have become a year-round fixture and UV radiation would increase 650 percent by 2065 in mid-latitude cities if not for the Montreal Protocol, an international treaty signed in 1987 that limited the amount of ozone-depleting gases countries could emit.

Clouds and Hemispheric Dimming

In addition to analyzing ozone and ultraviolet trends, Herman also used satellite data to study whether changes in cloudiness have affected UV trends. To his surprise, he found that increased cloudiness in the southern hemisphere produced a dimming effect that increased the shielding from UV compared to previous years.

In the higher latitudes especially, he detected a slight reduction typically of 2 to 4 percent -- in the amount of UV passing through the atmosphere and reaching the surface due to clouds. "It's not a large amount, but it's intriguing," Herman said. "We aren't sure what's behind it yet."

Vitali Fioletov, a Canadian scientist and member of the World Meteorological Organization's advisory group on ultraviolet radiation, agreed that Herman's findings about cloudiness warrant additional investigation. "I found the cloud effects on the global scale to be the most interesting aspect of the study," he said. "This isn't something you could see without satellites."

Herman synthesized measurements from the Total Ozone Mapping Spectrometer (TOMS) aboard Nimbus 7 and Earth Probe, the Ozone Monitoring Instrument (OMI) on
'/>"/>

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. Mothers exposure to bisphenol A may increase childrens chances of asthma
2. Duke awarded up to $43 million to develop test for dirty bomb/radiation exposure
3. Exposure to young triggers new neuron creation in females exhibiting maternal behavior
4. Secondhand smoke exposure in childhood increases lung cancer risk later in life
5. Exposure to secondhand cigarette smoke over a lifetime increased breast cancer risk later in life
6. Exposure to both traffic, indoor pollutants puts some kids at higher risk for asthma later
7. Exposure to lead, tobacco smoke raises risk of ADHD
8. Exposure to alkaline substances can result in damaged teeth
9. Pitt research suggests EPA pesticide exposure test too short, overlooks long term effects
10. Bisphenol A exposure in pregnant mice permanently changes DNA of offspring
11. Environmental exposures may damage DNA in as few as three days
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
UV exposure has increased over the last 30 years, but stabilized since the mid-1990s
(Date:12/11/2014)... Dec. 10, 2014  That blood pressure plays a role ... Hypertension – the medical term for high blood pressure – ... and the inflatable cuff that,s used in measuring blood pressure ... there,s nothing new about hypertension, its triggers and its effects. ... the condition and the best ways to treat it. ...
(Date:12/10/2014)... SAN DIEGO , Dec. 9, 2014 ... and collaboration catalyst that provides the connective tissue that ... by enabling them to easily share client-level information; earned ... Foundation to expand to organizations serving seniors aging in ... San Diego" partner on December 11 th 4-6p. ...
(Date:12/4/2014)... PALM BEACH GARDENS, Fla. , Dec. 3, ... identity management solutions, today announced that its DigitalPersona ... 4500 fingerprint readers have been deployed throughout ... Carolina , South Carolina ... network headquartered in Southern Pines, North ...
Breaking Biology News(10 mins):Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 3Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 4First Bank Partners with Crossmatch to Increase Log In Security 2First Bank Partners with Crossmatch to Increase Log In Security 3
... Researchers have made an important breakthrough in the use ... solar cells an innovative technology that could significantly reduce ... The advance was just reported in Current Applied ... University and Yeungnam University in Korea. This is one ...
... who are taking part in a nationwide initiative, Project ... unusually early, perhaps as a result of climate change. ... and foliage, amassing thousands of observations from across the ... changing climate. The project, started as a pilot ...
... of genetic factors in tinnitus is low, according to new ... the first large population-based study to measure the heritability of ... and to what degree it is hereditary. Prevalence of tinnitus ... countries. Tinnitus is a symptom with a variety ...
Cached Biology News:Advance made in thin-film solar cell technology 2Advance made in thin-film solar cell technology 3'10 most wanted' plants inspected for clues to climate change 2'10 most wanted' plants inspected for clues to climate change 3
(Date:12/22/2014)... Dec. 22, 2014  ( www.competitivehealth.com ) — Competitive ... medical bill review and advocacy service, has signed an ... WellCard Savings discount health services marketplace. 63% ... more than they expected to pay. As part of ... costs, WellCard Savings is pleased to offer medical bill ...
(Date:12/22/2014)... 22, 2014 Fertility Associates of Memphis ... Bank USA , a network of more than 20 ... partnership, patients have fast access to a national pool ... IVF . Fertility Associates of Memphis is the only ... treatment option. , Dr. William Kutteh , director ...
(Date:12/19/2014)... BioPlus Specialty Pharmacy (BioPlus), one ... of Nick Maroulis, Pharm.D. to the newly created position ... In this position, Dr. Maroulis will continue to manage ... of our multi-site pharmacies as the company expands. Dr. ... that time he has served in many different capacities ...
(Date:12/19/2014)... Dec. 19, 2014 Bina Technologies, Inc. (Bina, ... that they have been acquired by Roche (SIX: RO, ... privately held company that provides a big data platform ... (NGS) data for the academic and translational research markets. ... and will continue to focus on development of their ...
Breaking Biology Technology:WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 3BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2Bina Technologies is acquired by Roche. 2Bina Technologies is acquired by Roche. 3
... Today, world-renowned scientist Dr. J. Craig Venter announced ... Institute (JCVI) became the first in history to synthetically create ... solutions to a host of global challenges, including generating new ... energy sources; producing clean water; and more.   , ...
... WASHINGTON , May 20 ... today reported positive results from its Phase 1 dose ... to patients with metastatic cancer.  The data presented today ... and gene expression, and anti-cancer effects of JX-594 delivered ...
... ... the release of FreezerPro MultiSite, a new addition to FreezerPro product line. FreezerPro ... facilitating IT resources, simplifying administration and providing a centralized repository of laboratory samples and ... ...
Cached Biology Technology:Science Channel Announces the Debut of Exclusive Look Into Dr. J. Craig Venter's Creation of Synthetic Life 2Science Channel Announces the Debut of Exclusive Look Into Dr. J. Craig Venter's Creation of Synthetic Life 3Jennerex Reports Positive Phase 1 Results for JX-594 Administered Intravenously 2Jennerex Reports Positive Phase 1 Results for JX-594 Administered Intravenously 3Jennerex Reports Positive Phase 1 Results for JX-594 Administered Intravenously 4RURO Launches FreezerPro MultiSite 2
... Large (Klenow) Fragment, Exonuclease Minus, is a ... 5´→3´ and the 3´→5´ exonuclease activities present ... (1,2). It is used for random primer ... (5). Klenow Fragment, Exonuclease Minus, will leave ...
... 8-iso PGE2 is one of several isoprostanes ... is a potent renal vasoconstrictor in the rat. ... with IC50 values of 0.5 and 5 µM, ... the rat at a concentration of 4 mg/kg/min, ...
DNA Polymerase I Large (Klenow) Fragment is a DNA polymerase that lacks the 5'Cut Site3' exodeoxyribonuclease activity of intact DNA Polymerase I but it contains the 3'Cut Site5' exodeoxyribonuclease...
... offers both high-speed and high-volume versatility ... rotor options, making it ideal for a ... Versatility , High-speed (up to 15,000 ... high-volume (4 x 250mL) swinging bucket rotors ...
Biology Products: