| Analysis of the search query | why is the ozone layer depletion in antarctica |
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Top competitors on query "why is the ozone layer depletion in antarctica"
http://library.thinkquest.org/CR0215022/ozone.htm Competition: low
Planetary scale waves are so large that they could wrap themselves around the whole earth! Unlike water waves, which go up and down, planetary scale waves displace the north air and south air as they travel around the earth. But, it was causing holes in our stratosphere, the second lowest layer in the atmosphere, and that is why it is referred to as "holes" in the atmosphere
http://uk.answers.yahoo.com/question/index?qid=20090106155539AAx7oVx Competition: low
The ozone layer prevents harmful ultra violet light from penetrating the atmosphere, so without it exposure to the sun leads to an increased risk of skin cancer, sunburn, etc. Source(s): School 5 years ago Report Abuse by ABBABABE Member since: 21 July 2007 Total points: 13,490 (Level 6) Add Contact Block Lack of ozone causes more heat to be directed to the planet surface which makes earth a hot tomato house
http://www.wunderground.com/resources/climate/ozone_skeptics.asp Competition: low
After making revisions, the author submits the article back to the journal editor, who can then accept the article, reject it, or send it back for another round of review. They also asked how Americans would go about putting sunscreen and hats on cows and stalks of corn, since plants and animals are adversely affected by UV light, as well
http://uk.answers.yahoo.com/question/index?qid=20060919112057AAz7JYO Competition: low
However, these were initially rejected as unreasonable by data quality control algorithms (they were filtered out as errors since the values were unexpectedly low); the ozone hole was only detected in satellite data when the raw data was reprocessed following evidence of ozone thinning in in situ observations. While several alternatives to HFCs have been proposed for fi re protection, including inert gases, fl uoroketones (FKs) and water mist, HFCs and inert gases have become, and appear likely to remain, the most commonly used clean agents and have achieved equilibrium in the market
Science - Ozone Basics
http://www.ozonelayer.noaa.gov/science/basics.htm Competition: low
CFCs, carbon tetrachloride, and methyl chloroform are important human-produced ozone-depleting gases that have been used in many applications including refrigeration, air conditioning, foam blowing, cleaning of electronics components, and as solvents. Another important group of human-produced halocarbons is the halons, which contain carbon, bromine, fluorine, and (in some cases) chlorine and have been mainly used as fire extinguishants
http://www.nsf.gov/about/history/nsf0050/arctic/ozone.htm Competition: low
During the winter, temperatures inside the Antarctic polar vortex fall so low that water vapor and several other types of molecules in the stratosphere condense into extremely small icy particles. All through the long, dark winter, especially during July and August, the chemical reactions taking place on the surfaces of the PSC particles continue, and more and more Cl builds up inside the vortex
http://ozonewatch.gsfc.nasa.gov/facts/history.html Competition: low
NASA has been monitoring the status of the ozone layer through satellite observations since the 1970s, beginning with the TOMS sensors on the Nimbus satellites. For example, the National Ozone Expedition (NOZE) measured elevated levels of the chemical chlorine dioxide (OClO) during the springtime ozone hole from McMurdo Research Station
http://www.atm.ch.cam.ac.uk/tour/part2.html Competition: low
These CFCs had made their way into the upper atmosphere where the much stronger UV radiation from the Sun had broken them down into their component molecules, releasing the potentially damaging chlorine (and bromine) atoms, which, given the right conditions, could destroy ozone. Inline movie of TOMS ozone measurements from Nov 1978 to Jan 1992(3.7 Mb) MPEG movie of TOMS ozone measurements from Nov 1978 to Jan 1992(1 Mb) The TOMS instrument measures ozone levels from the back-scattered sunlight, specifically in the ultra-violet range
http://www.ozonedepletion.info/education/ozone.html Competition: low
Why Is Ozone Important? In the stratosphere, ozone absorbs virtually all of the solar ultraviolet (UV) radiation with wavelengths of less than 290 nanometers (nm) and most of it in the biologically harmful wavelength region of 290 to 320 nm (which is called UVB). A 1991 NASA research effort revealed that the magnitude of ozone loss was bigger, that the spatial extent was larger, and that the ozone depletion was persisting for a greater part of the year than had been previously recognized (Zurer, 1993)
Depletion of the Ozone Layer
http://www.munfw.org/archive/40th/unep3.htm Competition: low
At ground level ozone is a pollutant, but in the upper stratosphere (a segment of atmosphere extending approximately 9 miles to 30 miles above the earth's surface) it forms a layer that protects the earth from the sun's harmful ultraviolet radiation. This was the first time that the international community had recognized a need for action on an environmental problem before actual damages were recorded
The Ozone Layer
http://theozonehole.com/ozonelayer.htm Competition: low
It is mainly located in the lower portion of the stratosphere from approximately 15 km to 35 km above Earth's surface, though the thickness varies seasonally and geographically. Ozone layer thickness is expressed in terms of Dobson units, which measure what its physical thickness would be if compressed in the Earth's atmosphere
The Ozone Hole
http://www.theozonehole.com/ Competition: low
Scientific theory and evidence suggest that, once emitted to the atmosphere, these compounds could significantly deplete the stratospheric ozone layer that shields the planet from damaging UV-B radiation. The Ozone Hole About Us Awards Donate Contact Us Site Map News Links Ozone Hole History Montreal Protocol Ozone Hole 2006 Ozone hole 2013 Arctic Ozone Hole The Ozone Hole For nearly a billion years, ozone molecules in the atmosphere have protected life on Earth from the effects of ultraviolet rays
http://classroom.antarctica.gov.au/climate/ozone-depletion Competition: low
Polar stratospheric clouds (PSCs), which form during periods of very low temperatures, chemically alter normally-inert CFCs and related chemicals to destroy ozone in the presence of sunlight, effectively putting a hole in earth's protective ozone blanket. Antarctic atmospheric data going back to 1957 showed an alarming decline in ozone values over Antarctica each spring - effectively a hole in the ozone layer
Depletion Of The Ozone Layer :: essays research papers
http://www.123helpme.com/view.asp?id=61862 Competition: low
The Company makes no representations about the accuracy, reliability, completeness, or timeliness of the Material or about the results to be obtained from using the Material. Bromine is estimated to be 50 times more effective than chlorine in destroying ozone.13 Insect fumigation, burning biomass, and gasoline usage all release methyl bromide into the air
How bad is the Ozone layer depletion today? - Yahoo! Answers
http://answers.yahoo.com/question/index?qid=20080620191329AA5MKfo Competition: low
Member since: June 04, 2008 Total points: 2,499 (Level 3) Add Contact Block People claiming that the ozone is not damaged by natural causes are dead wrong. The only difference between CFCs and Chlorine is that Chlorine has a shorter life span in the atmosphere than CFCs do and the planet is able to repair its atmosphere before permanent damage begins to set it
http://www.epa.gov/ozone/science/sc_fact.html Competition: low
In 1992, reacting to the latest scientific assessment of the ozone layer, the Parties to the Protocol decided to completely end production of halons by the beginning of 1994 and of CFCs by the beginning of 1996 in developed countries. UVB has been linked to many harmful effects, including various types of skin cancer, cataracts, and harm to some crops, certain materials, and some forms of marine life
Expert Advice on Protecting the Ozone Layer
http://www.ozonedepletion.co.uk/ Competition: low
What is ozone? Can changes in the composition of the Earth's atmosphere affect life on earth? What caused the hole in the ozone layer? Why are people so worried about it? How long has it been there, and who discovered it? Why is Antarctica particularly affected? What is the connection between ozone depletion and global warming? OzoneDepletion contains the answers to these and many other questions
What was causing the depletion of the ozone layer
http://wiki.answers.com/Q/What_was_causing_the_depletion_of_the_ozone_layer Competition: low
Only ozone (not oxygen) in our current atmopshere can absorb UV-B radiation which is very very harmful for all the living organisms when it is at elevated levels. This molecule combines with ozone to reduce it to oxygen and a ClO molecule.The ClO attacks another Ozone molecule producing atomic oxygen and a chloride ion
What is the ozone layer and why is it important?How does ozone depletion occur? - Yahoo! Answers India
http://in.answers.yahoo.com/question/index?qid=20070402233235AAXRmZt Competition: low
Source(s): comon logic 7 years ago Report Abuse by silivren Member since: 16 February 2007 Total points: 1,374 (Level 3) Add Contact Block the ozone layer is a layer in the stratosphere of our planet. In addition, research has shown that ozone depletion occurs over the latitudes that include North America, Europe, Asia, and much of Africa, Australia, and South America
Depletion of the Ozone Layer - ChemWiki
http://chemwiki.ucdavis.edu/index.php?title=Physical_Chemistry/Kinetics/Case_Studies/Depletion_of_the_Ozone_Layer&bc=0 Competition: low
In years with a strong polar vortex, the ozone hole is seen to expand in diameter, where as in years with a weaker polar vortex, the ozone hole is noted to shrink Ozone Depleting Substances The following substances are listed as ozone depleting substances under Title VI of the United State Clean Air Act: Table 1: Ozone Depleting Substances And Their Ozone-Depletion Potential. This extreme stability allows CFC's to slowly make there way into the stratosphere (most molecules are not around long enough to cross into the stratosphere from the troposphere)
Ozone depletion - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Ozone_depletion Competition: low
These models work by combining satellite measurements of chemical concentrations and meteorological fields with chemical reaction rate constants obtained in lab experiments. The discrepancy between the Arctic and Antarctic noted by Dobson was primarily a matter of timing: during the Arctic spring ozone levels rose smoothly, peaking in April, whereas in the Antarctic they stayed approximately constant during early spring, rising abruptly in November when the polar vortex broke down
Planetary scale waves are so large that they could wrap themselves around the whole earth! Unlike water waves, which go up and down, planetary scale waves displace the north air and south air as they travel around the earth. But, it was causing holes in our stratosphere, the second lowest layer in the atmosphere, and that is why it is referred to as "holes" in the atmosphere
The ozone layer prevents harmful ultra violet light from penetrating the atmosphere, so without it exposure to the sun leads to an increased risk of skin cancer, sunburn, etc. Source(s): School 5 years ago Report Abuse by ABBABABE Member since: 21 July 2007 Total points: 13,490 (Level 6) Add Contact Block Lack of ozone causes more heat to be directed to the planet surface which makes earth a hot tomato house
After making revisions, the author submits the article back to the journal editor, who can then accept the article, reject it, or send it back for another round of review. They also asked how Americans would go about putting sunscreen and hats on cows and stalks of corn, since plants and animals are adversely affected by UV light, as well
However, these were initially rejected as unreasonable by data quality control algorithms (they were filtered out as errors since the values were unexpectedly low); the ozone hole was only detected in satellite data when the raw data was reprocessed following evidence of ozone thinning in in situ observations. While several alternatives to HFCs have been proposed for fi re protection, including inert gases, fl uoroketones (FKs) and water mist, HFCs and inert gases have become, and appear likely to remain, the most commonly used clean agents and have achieved equilibrium in the market
Science - Ozone Basics
CFCs, carbon tetrachloride, and methyl chloroform are important human-produced ozone-depleting gases that have been used in many applications including refrigeration, air conditioning, foam blowing, cleaning of electronics components, and as solvents. Another important group of human-produced halocarbons is the halons, which contain carbon, bromine, fluorine, and (in some cases) chlorine and have been mainly used as fire extinguishants
During the winter, temperatures inside the Antarctic polar vortex fall so low that water vapor and several other types of molecules in the stratosphere condense into extremely small icy particles. All through the long, dark winter, especially during July and August, the chemical reactions taking place on the surfaces of the PSC particles continue, and more and more Cl builds up inside the vortex
NASA has been monitoring the status of the ozone layer through satellite observations since the 1970s, beginning with the TOMS sensors on the Nimbus satellites. For example, the National Ozone Expedition (NOZE) measured elevated levels of the chemical chlorine dioxide (OClO) during the springtime ozone hole from McMurdo Research Station
These CFCs had made their way into the upper atmosphere where the much stronger UV radiation from the Sun had broken them down into their component molecules, releasing the potentially damaging chlorine (and bromine) atoms, which, given the right conditions, could destroy ozone. Inline movie of TOMS ozone measurements from Nov 1978 to Jan 1992(3.7 Mb) MPEG movie of TOMS ozone measurements from Nov 1978 to Jan 1992(1 Mb) The TOMS instrument measures ozone levels from the back-scattered sunlight, specifically in the ultra-violet range
Why Is Ozone Important? In the stratosphere, ozone absorbs virtually all of the solar ultraviolet (UV) radiation with wavelengths of less than 290 nanometers (nm) and most of it in the biologically harmful wavelength region of 290 to 320 nm (which is called UVB). A 1991 NASA research effort revealed that the magnitude of ozone loss was bigger, that the spatial extent was larger, and that the ozone depletion was persisting for a greater part of the year than had been previously recognized (Zurer, 1993)
Depletion of the Ozone Layer
At ground level ozone is a pollutant, but in the upper stratosphere (a segment of atmosphere extending approximately 9 miles to 30 miles above the earth's surface) it forms a layer that protects the earth from the sun's harmful ultraviolet radiation. This was the first time that the international community had recognized a need for action on an environmental problem before actual damages were recorded
The Ozone Layer
It is mainly located in the lower portion of the stratosphere from approximately 15 km to 35 km above Earth's surface, though the thickness varies seasonally and geographically. Ozone layer thickness is expressed in terms of Dobson units, which measure what its physical thickness would be if compressed in the Earth's atmosphere
The Ozone Hole
Scientific theory and evidence suggest that, once emitted to the atmosphere, these compounds could significantly deplete the stratospheric ozone layer that shields the planet from damaging UV-B radiation. The Ozone Hole About Us Awards Donate Contact Us Site Map News Links Ozone Hole History Montreal Protocol Ozone Hole 2006 Ozone hole 2013 Arctic Ozone Hole The Ozone Hole For nearly a billion years, ozone molecules in the atmosphere have protected life on Earth from the effects of ultraviolet rays
Polar stratospheric clouds (PSCs), which form during periods of very low temperatures, chemically alter normally-inert CFCs and related chemicals to destroy ozone in the presence of sunlight, effectively putting a hole in earth's protective ozone blanket. Antarctic atmospheric data going back to 1957 showed an alarming decline in ozone values over Antarctica each spring - effectively a hole in the ozone layer
Depletion Of The Ozone Layer :: essays research papers
The Company makes no representations about the accuracy, reliability, completeness, or timeliness of the Material or about the results to be obtained from using the Material. Bromine is estimated to be 50 times more effective than chlorine in destroying ozone.13 Insect fumigation, burning biomass, and gasoline usage all release methyl bromide into the air
How bad is the Ozone layer depletion today? - Yahoo! Answers
Member since: June 04, 2008 Total points: 2,499 (Level 3) Add Contact Block People claiming that the ozone is not damaged by natural causes are dead wrong. The only difference between CFCs and Chlorine is that Chlorine has a shorter life span in the atmosphere than CFCs do and the planet is able to repair its atmosphere before permanent damage begins to set it
In 1992, reacting to the latest scientific assessment of the ozone layer, the Parties to the Protocol decided to completely end production of halons by the beginning of 1994 and of CFCs by the beginning of 1996 in developed countries. UVB has been linked to many harmful effects, including various types of skin cancer, cataracts, and harm to some crops, certain materials, and some forms of marine life
Expert Advice on Protecting the Ozone Layer
What is ozone? Can changes in the composition of the Earth's atmosphere affect life on earth? What caused the hole in the ozone layer? Why are people so worried about it? How long has it been there, and who discovered it? Why is Antarctica particularly affected? What is the connection between ozone depletion and global warming? OzoneDepletion contains the answers to these and many other questions
What was causing the depletion of the ozone layer
Only ozone (not oxygen) in our current atmopshere can absorb UV-B radiation which is very very harmful for all the living organisms when it is at elevated levels. This molecule combines with ozone to reduce it to oxygen and a ClO molecule.The ClO attacks another Ozone molecule producing atomic oxygen and a chloride ion
What is the ozone layer and why is it important?How does ozone depletion occur? - Yahoo! Answers India
Source(s): comon logic 7 years ago Report Abuse by silivren Member since: 16 February 2007 Total points: 1,374 (Level 3) Add Contact Block the ozone layer is a layer in the stratosphere of our planet. In addition, research has shown that ozone depletion occurs over the latitudes that include North America, Europe, Asia, and much of Africa, Australia, and South America
Depletion of the Ozone Layer - ChemWiki
In years with a strong polar vortex, the ozone hole is seen to expand in diameter, where as in years with a weaker polar vortex, the ozone hole is noted to shrink Ozone Depleting Substances The following substances are listed as ozone depleting substances under Title VI of the United State Clean Air Act: Table 1: Ozone Depleting Substances And Their Ozone-Depletion Potential. This extreme stability allows CFC's to slowly make there way into the stratosphere (most molecules are not around long enough to cross into the stratosphere from the troposphere)
Ozone depletion - Wikipedia, the free encyclopedia
These models work by combining satellite measurements of chemical concentrations and meteorological fields with chemical reaction rate constants obtained in lab experiments. The discrepancy between the Arctic and Antarctic noted by Dobson was primarily a matter of timing: during the Arctic spring ozone levels rose smoothly, peaking in April, whereas in the Antarctic they stayed approximately constant during early spring, rising abruptly in November when the polar vortex broke down
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