Originally posted by: Atheus
Originally posted by: moshquerade
Originally posted by: Atheus
Originally posted by: moshquerade
Originally posted by: Snatchface
Usually around this time of year in Vermont it hovers between 0-20 degrees. It's 60 degrees here now at 1 am in the morning. The trees are budding. None of the lakes are frozen, no snow yet. All of the skiing resorts are closed down for lack of snow. I think that we're all in really deep sh!t.
I'm buying a bike tomorrow.
El Nino, and cyclic weather patterns. the earth's weather has been in a state of change/evolution since day one.
the hole in the ozone layer is actually *shrinking*, and yet the FUD continues to be spread.
The hole in the ozone layer has nothing to do with global warming...
Are Ozone Holes related to Global Warming or the Greenhouse Effect?
The formation of ozone holes is related to these scientific issues, yet is still distinct.
Ozone plays a very important, natural role in the upper atmosphere (called the stratosphere), where 90% of it exists. Stratospheric ozone acts as a shield against harmful ultraviolet (UV) radiation from the sun. This ozone can be destroyed by human-produced chemical compounds called chlorofluorocarbons, or CFCs. When these CFCs are combined with extremely cold stratospheric temperatures over the poles, solar radiation, and particular patterns of atmospheric circulation, chemical reactions occur that cause "Ozone Holes" over Antarctica (pictured above) and the Arctic.
The formation of ozone holes is related to global warming and the greenhouse effect in two ways. First, CFCs are greenhouse gases. Thus, the release of these compounds into the atmosphere will have two separate effects: to destroy ozone and to add to the greenhouse effect. Second, if stratospheric temperatures or patterns of atmospheric circulation change as part of global warming, this will affect the chemical reactions that destroy ozone and cause the ozone holes to either grow or shrink.
http://www.ncdc.noaa.gov/paleo/globalwarming/what.html
Well OK they are related in a minor way, but you made it seem like the hole is either a cause of, or an indicator for global warming. Which it is not.
"the hole in the ozone layer is actually *shrinking*, and yet the FUD continues to be spread."
That is not an argument against the existence of global warming.
CFCs are a tiny contributor to greenhouse effects compared to CO2, which does not affect the ozone layer. Even if we completely stopped emitting CFCs and the hole closed completely, the numbers would still predict warming of pretty much the same magnitude as predicted today.