[AndyTheBear]

The Global Warming Swindle claims volcanoes emit more CO2 each year then factories and automobiles and such combined.

The volcano site in the link you provided said that man created more then 150 times what volcanoes did each year. As did another volcano site, that gave a figure of about 33 billion tons per year for the volcanoes.

However a "green" site I found was sounding an alarm about automobile emisions increasing dramatically to about 6.8 billion tons per year.

Another "green" site claimed that mankind had produced a total of 500 billion tons per the industrial revolution. Which it 25 billion a year if divide it by the last 20 years--but they were including "deforestation" in their calculations.

At this point, my guess is the "150 times" is an urban legend being passed around, and that the Great Warming Swindle was right about this.

[WildcatClan]

And you are right, but it’s not urban legend it is scientists posing it as fact. When you said, “you guess”, you became a scientist, because that is what they were doing on the site I linked. They call it estimation, you guess, you have as good a chance at being correct as any. The estimations aren’t always forthcoming as to how the estimation is determined. Were underwater volcanic co2 emissions accounted for, I bet not, but how do we know. See we have partially bought into AGW, because we are researching the straw man they set up in the article. We get bogged down in the minutia of volcanic vs anthropogenic when co2 emmisions from our oceans dwarf both.

[Paladin2]

"sounding an alarm about automobile emisions increasing dramatically to about 6.8 billion tons per year"

Note that China apparently has a huge number of underground coal fires that produce as much CO2/yr as all the US cars and private light trucks do (estimates run from this value to 1/2 of it). Perhaps the Kyoto types would like to go put out those fires (good luck).

[cogitator]

As did another volcano site, that gave a figure of about 33 billion tons per year for the volcanoes.

Make sure you aren't mixing up CO2 and SO2. Volcanoes emit about 25% of human SO2 emissions annually -- a big eruption like Pinatubo can almost balance the books in that year. The Swindle was wrong about CO2 and volcanoes, without doubt.

[Gondring]

I think that any site that lists only 33 billion tons per year of CO₂ is severely underestimating (even if it were a unit confusion between short/long/metric tonnes). A USGS estimate is 130 million tonnes per year.

Be sure you're not confusing billion with million. Volcanic activity is in hundreds of MILLIONS of tons/year. Human output is in tens of BILLIONS of tons/year. And recall...much of humanity's contribution is not from automobiles.

In any case, the total anthropogenic CO₂ output is