-Is it that small of an amount? (.25%) I knew it wasn't very much.
I was looking for that info, on the amount of CO2 produced by anthropogenic. Do you have a source for that?
Thanks.
Here’s a good link that I’ve seen before, and may have been where I got the 0.25%. However, I see that I am in error on the CO2 thing.
http://www.geocraft.com/WVFossils/greenhouse_data.html
Human contribution to the TOTAL effective greenhouse components, including water vapor, is 0.28%. And water vapor is the largest component of greenhouse gases. The amount of CO2 is something like 3% (its in the link). And I don’t recall if the 3% is the amount of CO2, or the “effective” amount of extra greenhouse effect. The link goes into detail on all of that.
And of course all we hear about in the press is the CO2, because that is something we can sort of understand (it comes out of our tailpipes and sounds like a pollutant - actually it is now based on last years Supreme Court Ruling!!??). Water vapor doesn’t sound quite so evil.
Anyway, with the .28% thing, I showed my kids 100 copper pennies on the table, with 1/4 of a single penny colored white with wite-out. Then asked them “how much does that white color change the color of the entire bunch of pennies?”. So simple, even a 10 year-old can figure it out.