Latest Polar stratospheric cloud Stories

Causes Of 2011 Arctic Ozone Hole Pinpointed By NASA
2013-03-12 10:16:04

NASA A combination of extreme cold temperatures, man-made chemicals and a stagnant atmosphere were behind what became known as the Arctic ozone hole of 2011, a new NASA study finds. Even when both poles of the planet undergo ozone losses during the winter, the Arctic´s ozone depletion tends to be milder and shorter-lived than the Antarctic´s. This is because the three key ingredients needed for ozone-destroying chemical reactions –chlorine from man-made...

2012-07-30 15:46:54

The destruction of atmospheric ozone can take place within newly forming Polar Stratospheric Clouds (PSCs), which serve as the battleground for manmade chlorofluorocarbons (CFCs) to attack and destroy ozone. These clouds form when clusters of frozen water "pick up" other atmospheric molecules such as methane, nitrogen oxides, and water molecules, similar to the way a snowball's girth increases as it rolls down a mountainside. Most previously established atmospheric models have assumed that a...

Unusually Chilly Stratosphere Behind 2011′s Record Arctic Ozone Hole
2011-10-20 08:06:37

Check the fine print on many cans of hairspray or shaving cream these days, and you´ll probably find a reassurance that the product you are holding contains “No CFCs or chemicals known to harm the ozone layer.” Located in the stratosphere, the ozone layer protects life on Earth from the harmful effects of ultraviolet radiation. To stop ozone destruction, chemical manufacturers phased out the production of CFCs (short for chlorofluorocarbons) over the past two decades. So...

CFC's the Real Reason for Ozone Loss?
2011-10-13 03:04:52

Op/ed By Kevin Roeten (roetenks@charter.net) How many individuals and corporations have lost money and jobs over theoretical ozone depletion? Why have natural variations never been considered as a possible reason for seasonal ozone loss? With ozone (O3) depletion, millions were (and are) convinced that chlorofluorocarbons (CFC´s), and certain brominated compounds (Halons), were responsible. Due to their theorized Ozone Depletion Potential (ODS), the most stable non-toxic refrigerants,...

2011-03-14 09:15:00

Arctic-wide measurements verify rapid depletion in recent days Unusually low temperatures in the Arctic ozone layer have recently initiated massive ozone depletion. The Arctic appears to be heading for a record loss of this trace gas that protects the Earth's surface against ultraviolet radiation from the sun. This result has been found by measurements carried out by an international network of over 30 ozone sounding stations spread all over the Arctic and Subarctic and coordinated by the...

2008-10-07 11:39:33

The 2008 ozone hole "“ a thinning in the ozone layer over Antarctica "“ is larger both in size and ozone loss than 2007 but is not as large as 2006. Ozone is a protective atmospheric layer found in about 25 kilometers altitude that acts as a sunlight filter shielding life on Earth from harmful ultraviolet rays, which can increase the risk of skin cancer and cataracts and harm marine life. This year the area of the thinned ozone layer over the South Pole reached about 27 million...

2008-04-26 10:15:57

The evils of global warming and ozone depletion are competing problems, at least in Antarctica, the results of two new studies suggest. Schemes to pump sulfur into the atmosphere to counteract global warming might help cool the Earth, but they could also cause problems at the poles, scientists warned today. Continuous injections could drastically deplete polar ozone, delaying the recovery of the current ozone hole over Antarctica by several decades. And another study finds that if the...

2006-08-01 02:20:00

SYDNEY -- Rare, mother-of-pearl colored clouds caused by extreme weather conditions above Antarctica are a possible indication of global warming, Australian scientists said on Tuesday. Known as nacreous clouds, the spectacular formations showing delicate wisps of colors were photographed in the sky over an Australian meteorological base at Mawson Station on July 25. Australian Antarctic Division scientist Andrew Klekociuk said such clouds are occasionally produced by air rising over Arctic...

2006-04-12 13:20:00

(RedOrbit) European scientists are using technology onboard the European Space Agency's radar altimeter Envisat to gain more information about polar stratospheric clouds and their effect on ozone depletion.  Although Polar stratospheric clouds (PSCs) have been shown to play a role in ozone depletion much still remains to be understood about these clouds. Using Michelson Interferometer for Passive Atmospheric Sounding (MIPAS,) an instrument onboard the Envisat that can observe polar...

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