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noaa: state of the ozone layer 2011 1080p
Bookmarked 716 weeks ago much of life on earth requires oxygen - not only for metabolism but also for protection oxygen in its many forms occurs throughout the atmosphere at 21 molecular oxygen o2 is the second most common gas in our atmosphere at 00001 ozone o3 is hardly common but its impact is enormous near the ground in the stratosphere ozone acts as a pollutant in the upper atmosphere troposphere it acts as a shield blocking harmful ultraviolet energy from the sun much attention has been made to the human-caused deterioration of the ozone layer and the infamous quotholesquot that form over the antarctic each year the term quotholequot is a bit of a misnomer as an actual hole does not form the ozone layer just becomes much thinnernoaa is one of the global leaders in monitoring and analyzing the ozone layer and has co-authored the most recent analysis describing the state of the ozone layer the scientific assessment panel of the un montreal protocol on substances that deplete the ozone layer has found that the montreal protocol enacted in 1987 has been effective in reducing mankind039s impact on the ozone layer but climate change may also begin to show signs of impacting the ozone layer especially in the arctic where climate-induced circulation patterns may become more severethis animation uses data from noaa039s satellites to show the annual changes in the size of the antarctic ozone hole along with daily fluctuations in global ozone concentration as pointed out in the report the size of the antarctic ozone hole appears to have reached a turnaround point whereby the hole is not getting worse each year but at the same time it is not decreasing it is expected that a return to quotnormalquot pre-1980 levels of ozone will occur later in this century -- that is if the ban on ozone-destroying chemicals stays in placeyou can monitor daily troposphere ozone concentration here on noaa039s website: http:wwwnnvlnoaagovdailyimagephpproduct=ozone_daily_mappedpngozoneconcentrationcredit: noaasource: http:wwwnnvlnoaagovmediadetailphpmediaid=658ampampmediatypeid=2 |
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magnetic reconnection and it039s associated problems
Bookmarked 786 weeks ago http:fascistsoupcom20110322laymans-definition-of-magnetic-reconnection-and-why-it-doesnt-really-exist |
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