The contribution of metabolic heat to climate change.

[Shapedoctor]

Originally Posted by CraigD

Thanks for asking!

The etiquette is you may freely use any matterial from posts at hypography, so long as that material is not marked "Copyrighted" (which it almost never is, except for the occasional original graphic), in which case you must ask the copyright holder’s permission before using it.

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Note, however, that I’ve mostly just interpreted data provided at wikipedia, so any credit should be shared with them.

Thanks again for the help CraigD. If you honestly don't believe that .04% of something is significant then I would like to invite you to give me .04% of your annual income. Let me know if you want my paypal information.

[Shapedoctor]

Originally Posted by Turtle

Yes, we humans belch out x amount of CO2 per q time period at a measurable rate that I recall ol' Uncle Al calculated quite specifically. I was sure it was here in an old thread but haven't turned it up the last couple times I looked. Nonetheless, said Uncle Al had it a significant contribution to the mix, and I recall no one found fault with his numbers, only his solution. Oh, and then there's the methane we emit. Pardon me...stepped on a barking spider.

Nice to meet you Turtle.

Originally Posted by Turtle

Here's a source (of information, not carbon dioxide ): They say no worries about the breathing, and it's a government source so go ahead and exhale.


Carbon Dioxide Information Analysis Center (CDIAC) - Frequently Asked Questions

So for 6.5 billion people that's 1 kilo * 6,500,000,000 = 6.5 billion kilos per day CO2 added to atmosphere daily by humans exhaling, 6.5 billion * 365 days = 23,725,000,000,000 kilos per year, or 6.5 billion * 2.2 lb per kilo / 2,000 lbs per ton = 26,097,500,000 tons per year.

Thanks for that link and information. That's a lot of CO2. I wouldn't worry about breathing at all if weren't for all the industrial CO2 we're producing on top of it.

[Shapedoctor]

The information at answers.com support the 100 watt figure for human beings.

100 W - BioMed: approximate average power used by the human body

And I saw this:

3 GW - Tech: approximate peak power generation of the world's largest nuclear reactor

Orders of magnitude: Information from Answers.com

At 660 GW the combined metabolisms of 6.5 billion human beings produces about 220 times as much heat-energy as the world's largest nuclear reactor.