Ok, I was lazy last night and didn't spend a whole lot of time trying to find other sites I liked, but here are a few I thought of.
http://www.ncdc.noaa.gov/oa/ncdc.html
http://aquarium.ucsd.edu/climate/
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Thats bull.... C02 what is causing the earth to heat up is 98% from volcanoes... The other 2% is from us.
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You should check your sources. The percentage of CO2 produced by humans is more like 4% of the total and volcanoes account for about .03-.04%. Also, there was no recent change in volcanism to explain the observed warming or increasing CO2.
Beyond estimates based on activity levels and measured rates of output different sources of CO2 leave characteristic isotopic fingerprints that let us track where it came from. The recent changes in the ratios of C12/C13/C14 point to fossil fuels as a major and increasing source of atmospheric carbon.