Výročie Montrealského protokolu
Pred 29. rokmi bol prijatý Montrealský protokol, ktorý mal začať regulovať látky, ktoré výrazne narušujú ozónovú vrstvu ako napríklad náplne do chladničiek. Simulácia vedcov znázorňuje ako by sa vyvíjala ozónová vrstva, keby tento protokol nebol prijatý.
A World Without The Montreal ProtocolThe World We Avoided by Protecting the Ozone Layer
Today, September 16, is International Day for the Preservation of the Ozone Layer--the anniversary of the signing of the Montreal Protocol, a landmark piece of legislation that began phasing out the production of ozone-depleting chemicals called chlorofluorocarbons (CFCs). These chemicals, also known by the trade name Freon, were common refrigerants and widely used in aerosol spray cans prior to the Montreal Protocol. In recent years, scientists have been using cutting-edge computer models of the atmosphere to ask a fascinating question: What would have happened to the ozone layer if nations had done nothing to limit the release of CFCs? The impact of inaction, the modeling shows, would have been ominous: increased rates of cancer, cataracts, and immune deficiency diseases are just a few of the consequences. By 2065, global ozone levels would drop to less than 110 Dobson units—a measure of the amount of ozone between the surface and space. (A healthy Dobson unit reading over Antarctica is around 275.) "We wouldn't be able to go out much at all," says NASA scientist Paul Newman. In this animation, watch how ozone levels change in two simulated versions of the future: one where CFCs have been regulated, and one where they have not.
The World We Avoided by Protecting the Ozone Layer
http://earthobservatory.nasa.gov/Features/WorldWithoutOzone/International Ozone Commission Press Release
https://ioc.atmos.illinois.edu/press/IO3C%20Press%20Release%20-%202016_final.pdfA World Without The Montreal Protocol (animation)
Posted by NASA Earth on 16. september 2016
http://svs.gsfc.nasa.gov/10824
Ozónoá vrstva by bola výrazne tenšia, čo by spôsobilo väčší výskyt nebezpečného žiarenia a s tým stúpajúce prípady rakoviny kože ako aj rýchlejšie topenie ľadovcov.
