This is from a past thread:
Here is what you need to know about global warming.
1. CO2 constitutes only .06percent of the atmosphere.
2. Methane is another greenhouse gas, but for some reason mans contribution to the atmosphere is hardly discussed. Why? According to NOAA methane levels have remained static since 1990. Cows 50 million tons per year. Termites 50 billion tons per year. Total output of methane is 600 million tons annually. New research indicates that live plants release up to 1000 times more methane then previously thought.
3. Water vapor is the chief greenhouse gas. At any given time there are 3,100 cubic miles of water in the vapor in the atmosphere. Any graph or greenhouse gas discussion that does not include water vapor is illegitimate poor science.
4. Sea level ice has been static for about 3,000 years.
5. After the last ice age it took 18,000 years for 60% of the last ice age to melt.
6 If the mean temp were to rise 20 degrees Celsius over night it would take Antarctic 10,000 years to melt.
7. The year 900AD. Norseman on Greenland were raising trees, grains, and grapes were raised in Newfoundland. Was it warmer or cooler back then?
8. Not every CO2 molecule that is created stays in the atmosphere. All living plants and the oceans regulate CO2. Rain water combines with CO2 to form H2CO3 carbonic acid. More CO2 is scrubbed out by weathering of rocks forming bicarbonates and carbonate ions. This is washed down to the ocean floor. All of the equivalent of man's CO2 is scrubbed out of the atmosphere in 23 days.
9. Other considerations? The Earth's axis wobbles from 22 to 25 degrees on a cycle of 41,000 years effecting climate.
10. The Milankovitch Theory. Earth's orbit is not a perfect circle on a cycle of 50,000 years effecting climate.
11. What is Earth's total mean temperature? Guess right now. It is 61 degrees.
12. Is there consensus among scientists about global warming? No. Go to
www.oism.org
for details about a petition signed by 17,000 scientists and assistants. All the names are there too. And I can provide a list of scientist who don't agree.
13. There has been significant ice reduction lately on the planet Mars. What does the Earth and Mars have in common. The Sun.
14. Of all greenhouse gases, water vapor, carbon dioxide, methane, nitrous oxide, CFC's, and miscellaneous gases. Nature is responsible for 99.72%, and man is responsible for 0.28% when water vapor is factored in.
15. The conventional wisdom is this. CO2 increase (a), plus increasing temps (b) equals global warming ©) a+b=c. Now I have seen a theory about global warming causing the next ice age. And plus the exact opposite of b still equals c. This is not science.
16. We know that we are here because of the greenhouse effect. Most of the suns energy reaches the surface and warms it, and the atmosphere close to the surface. That is why it grows colder the higher up you go. The earth's crust retains that heat the longest. The earth's oceans hold heat not as long as the crust. The atmosphere holds the heat the least amount of time. The conventional wisdom wants me to believe that all the trouble is coming from less than 1 percent of the atmosphere that holds heat the least amount of time?
17. Is mankind having an effect? Yes without a doubt, but how much. Using data from the Vostok ice core samples we can calculate gas levels from 2000 years ago, and compare them with atmospheric samples today.
2000 years ago Today Difference
CO2 284ppm 364ppm 80 Parts per Million
CH4 668ppb 1721ppb 1053 Parts per Billion
Parts per million. Parts per billion. To put it in perspective our atmosphere weighs 6 million billion tons.
18. If all CO2, CH4, CFC;s and NO2 were to disappear completely from the atmosphere 95% of the greenhouse effect will remain. Water vapor.
19. If CO2 levels doubled the climate would not respond quickly because of the large thermal inertia of the oceans. This effect would delay warming by decades to centuries. The deep oceans carries over a thousand years of thermal memory that would delay real warming even more according to research conducted by NOAA.
20. The warming of the 20th century happened in two stages. From 1910 to 1940 the Earth warmed ½ of a degree. Without significant anthropogenic CO2. From 1980 to 2000 another ½ degree warming with significant anthropogenic CO2. Between 1940 to 1980 the Earth cooled with CO2 on the rise. Are there other factors at play here?
21. It is the height of ignorance to worry about a degree here or a couple of degrees over a century. The only constant on this planet is change. I can drive 2 minutes from my house and find sharks teeth in sedimentary rock formations. That indicates huge change.
22. 450 million years ago the CO2 levels were over 10 times higher then they are today. At that time the Earth was in its coldest period in the last 500 million years. What we are experiencing is a very small CO2 increase compared with some in the past.
23. This is what effects climate on this globe. Listed in order of magnitude of effect.
1. Solar output.
2. Distance between Earth and Sun.
3. Angle of Earth to Sun.
4. Position and height of the continents. (Wilson cycle) Interruption or free flow of the Thermohaline currents vastly effecting heat distribution.
5. Composition of the atmosphere.