Rumulun, although your arguments seem persuasive, I remain unconvinced. They have been covered countless times (I've discussed them several times on this same forum), but I'll go ahead and post my rebuttal of each one anyway.
romulun wrote:If human caused CO2 is a mere 1% of all the CO2 produced, making the other 99% natural, then what could we do to make an impact to reduce it?
Actually, humans are responsible for about 38% percent of the CO2 in the atmosphere (280 ppm to 380 ppm is 100 ppm, or 38%). The 1% (actually 2%) figure you give is the amount humans are increasing CO2's concentration in the atmosphere each year, it isn't the net of anthropogenic carbon dioxide.
Volcanoes produce 60 times what humans does, decay, animals, trees, grass, etc all makes more CO2 then humans
I'm not sure where you're getting your numbers from, but according to the
USGS, volcanoes emit approximately 200 million tons of CO2 into the atmosphere every year, while humans emit approximately 30
billion tons each year. Also of note is that volcanic eruptions usually have a net
cooling effect, as can be seen from the eruption of
Mount Pinatubo in 1991.
When the Earth cools, the oceans absorb CO2, and when the Earth warms, CO2 is released.
That's true. In fact, this feedback mechanism is particularly worrisome to climate scientists. Warming produced by human emissions of Co2 could warm the oceans to the point where they start releasing even more CO2, thus reinforcing the warming.
Changes in solar activity certainly have effects on the climate. However, the simple fact of the matter is that there have been no trends in solar activity sufficient to produce the bulk of 20th century warming.
A man once said to the universe, "Sir, I exist!" "However," replied the universe, "The fact has not created in me a sense of obligation."