Well, the thread on the EU and global warming got locked down, but I still wanted to point out that Global Warming is indeed real, and is an urgent issue that needs to be addressed now before it gets out of hand. Here's a post I made from that thread, I hope it clarifies some issues, please comment on this, CIVILLY:
There is no question as to what causes global warming, and it is human caused pollution. Not volcanic eruptions, not changes in the earth's orbit, but human cause pollution, mainly the burning of fossil fuels resulting in increased CO2 in the atmosphere. I'm going to base the following on stuff from my textbooks and class information from stuff that I've learned in school, specifically in my atmospheric science classes. So there won't be any online links, but I will put a reference to my source.
1. The atmospheric composition of the earth's atmosphere has about 0.03% carbon dioxide and 0.2% water vapor. We all know how much of an impact on weather the water vapor in our atmosphere has, but the amount of water vapor in our atmosphere is relatively constant. However, it has been proven with scientific data that the CO2 emissions in our atmosphere have increased steadily since measurements were first taken. Measurements have shown that the concentration of C02 in the atmosphere (in parts per million volume) has increased from about 310 in 1958 to 440 in the year 200. In the last 150 years, average global temperature has risen about one degree Celsius. This is no coincidence that the rise began with the industrial revolution and the increase of CO2 emissions. (Atmospheric Science an Introductory Survey, John Wallace and Peter Hobbs)
2. Some more statistics: From 1990-2002, here are some numbers on the increase/decrease of CO2 emissions:
(University of Illinois Urbana-Champaign Climate Research Group, department of atmospheric science)
3. The decrease in the Ozone is actually not the cause of CO2, but of compounds which many of you surely know about called CFC's, Chloroflorocarbons. These compounds were used extensively around the world earlier in the century in anything from industrial adhesives to the foam boxes you could get your burgers in. There are only one or two of these molecules per million Ozone molecules, but their destructive power is very high. Here's what happens:
- A Chlorine molecule from the CFC is released from photodissasociation. This chlorine molecule collides or reacts with a highly reactive Ozone molecule (O3).
Cl + 03 ----> ClO + O2 (note: this is non reversible)
- The Cl is now bonded to the single O, but this is broken down by photodissasociation from the sun's energy at the higher levels of the atmosphere, and the single O rebonds with another oxygen.
ClO + O + Energy ----> Cl + O2
- The net result is that that you have once again the Cl molecule free to destroy more ozone molecules, and you have one less ozone molecule in the process. The worst part is that the lifetime of these CFC's last up to around 100 years.
(professor Michael Schlesinger, Department of Atmospheric Sciences)
4. A common myth is that volcano's are contributors to global warming, and this is far from the truth. Rather, after a major volcanic eruption such as those seen by Mt. Pinatubo show that the gases and materials released by a volcanic eruption are prime contributors to global cooling. The main of these are sulfur dioxide particles, which convert to sulfuric acid in the atmosphere. These aerosols, combined with the large amount of ash, result in reflecting a large amount of solar radiation back out into space, resulting in a decrease of global temperatures. The eruption of El Chincon alone resulted in the release of 7 million tons of sulfur dioxide into the atmosphere. It takes about twelve months for the majority of the aerosols released by a major volcanic eruption to settle out of the atmosphere.
I will continue this further at a later time, I have more to post, I hope most of you have found this informative.