In the 1970s, scientists discovered that an important function of the stratosphere performed by ozone was impaired by persistent, industrial chemicals known as. These chemicals led to the destruction of ozone molecules and depleted the layer that protects all life on Earth. One key concern was the large “hole” which was opening in the ozone layer each year over Antarctica.
Atmospheric scientists identified the actions that humans were taking to cause the stratospheric ozone depletion. Chlorine and bromine, released by the breakdown of CFCs, were particularly problematic. The 1987 Montreal Protocol phased out production and use of these and other substances that deplete ozone.
One hundred and ninety-seven U.N. member states adopted the Montreal Protocol, making it the only U.N. treaty ratified by every country on the planet. President Ronald Reagan,called it a “model of cooperation” and pledged that the U.S. would give the “highest priority to analyzing and assessing the latest research findings.”
A new problem emerged, however, when some of the ozone-saving substitutions made for the CFCs were found to be problematic in other ways. Hydrofluorocarbons cause considerably less damage to the ozone layer compared to CFCs because they lack chlorine and bromine, but are powerful greenhouse gasses. In October 2016, thewas adopted to phase down future global production and consumption of HFCs, marking the first time the Montreal Protocol adopted regulations solely for the protection of climate.
WMO UNEP ametsoc Research This is not true. We all know Santa's reindeers' flatulence is the major cause of depletion!
WMO UNEP ametsoc Research Confusing correlation with causation, again.
Satellites WMO UNEP ametsoc Research English much?
WMO UNEP ametsoc Research When trump took down the site o use to use a lot. I knew NOAA was part of the problem, there is no good reason to have DIA as Colorado’s temperature collection point unless your trying to fudge the data
genejm29 WMO UNEP ametsoc Research Your study COMPLETELY fails to acknowledge that the primary contributor to earth’s ozone is solar activity. The sun’s activity & material it ejects are the greater source of ozone fluctuation. Aerosols & other atmospheric particulate in the upper atmosphere are minuscule contrib
Satellites WMO UNEP ametsoc Research 👏🏻👏🏻👏🏻
WMO UNEP ametsoc Research 🤣
WMO UNEP ametsoc Research Ah, look at all those beautiful stars! Oh, wait...
WMO UNEP ametsoc Research The rise & drop in ozone holes is related to solar activity, not human activity. I thought you were smarter than this!