[LMB] CO2 - Re: Butter Bugs! Well, almost.... OT:
mark at allums.com
Fri Jun 27 03:26:37 BST 2008
Mark Allums wrote:
> Greg Hennessy wrote:
>>> I have read, and I believe, and I will look up a reference if necessary,
>>> that CO2 is responsible for about 2% of warming, and water vapor, about
>>> 95%. Methane, fluorocarbons, and other things, the other 3%.
>> Please do look up the reference, I think your numbers aren't even close
>> to reality.
>> Water vapor causes about 60 percent of the greenhouse
>> effect, CO2 about 25 percent. The numbers are uncertain
>> enough that you could add or subtract about 10 percentage
>> points from either number and I would accept it as reasonable.
> I will try and do better and get some sources from research or climate
> data. I read an article about a year ago that said much the same as
> you, and another that said much the same as what I have repeated. So,
> apparently, opinions vary on this subject.
Here is a website that says water is about 95%. I was apparently wrong
about methane. Methane is a very effective greenhouse gas, but there is
very little of it in the atmosphere, so it doesn't contribute much.
Apparently, nitrous oxide is much more important.
I was also wrong about the effect of CO2. They say it is larger than I
remember. I said about 2%, they say about 3.6%.
I don't know who these people are, so I can't vet the site as an
authority. I will keep looking.
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