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#20
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[ QUOTE ] So your only evidence is "because they say so." Well, unlike you, I simply don't trust "them." [ QUOTE ] What specific data are you looking for? [/ QUOTE ] Any evidence linking CO2 as a cause for increased temperatures. [/ QUOTE ] I'm confused, you're saying you don't accept the conclusions of experts in their fields whose results were published in peer-reviewed journals? If this is the case then you should probably stay clear of any sort of scientific discussion, as you must have a poor understanding of how it works. The evidence is, as mentioned, as established as anything in the scientific community is. CO2 absorbs infrared radiation, which makes it (along with several other gases) what is called a "greenhouse gas". Sunlight is mostly high frequency radiation, and passes through the atmosphere because it does not absorb in that region. Various earthbound objects do absorb in that region, elevating the energy level of the molecules in those objects (and increasing their temperature). Radiative heat transfer occurs, where these excited molecules can lose heat by emitting radiation in the infrared region. This radiation passes back through the atmosphere, where it is absorbed by CO2 and other greenhouse gases. Other atmospheric gases, such as nitrogen (about 70% of the atmosphere), do not absorb infrared. Thus the larger the concentration of infrared absorbers in the atmosphere, the more energy is held within the atmosphere instead of leaking back out into space. This is, as I mentioned, trivially easy to show in a lab by measuring the absorption/emission spectrum of the various atmospheric gases, so since you apparently refuse to take the word of those who are experts in the field, you can perform the experiment yourself. It is also standard curriculum in most 4th grade classrooms. [/ QUOTE ] A beautiful theory. Too bad the evidence of the earth doesn't seem to support it. Such a shame, because on paper it just seems so simple and logical and it can be shown in a lab. Go figure. |
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