Global Warming - The Evidence and Role of Water and CO2

Here is a set of viewgraphs that present the relationships between CO2 and Water with respect to Global Warming. The Video also contains charts that show historical information on Global Temperatures and CO2 levels.

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• Global
• Warming
• Lectures
• Water
• Carbon
• Dioxide
• Al
• Gore
• Radiation
• Green
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• Effect
• Infrared
• Physics

[skeletorawrrr]

Uhm first of all... Even if CO2 made a substantial increase in temperature (which it doesn't) there is no possible way for humans to limit it's use...Well unless we want to drown out all the oceans and somehow get rid of the CO2 they produce! (Oceans are by far the largest producers of CO2) Relax, this has been going on since the earth was made... CLIMATE CHANGES, NATURALLY. Oh and damn water vapor...We should get rid of it, considering it amounts for 95% of greenhouse gases.

[jas2754]

yep as pointed out.... CO2 has much less effect than water vapor as a greenhouse gas.. CO2 at best it is a catalyst... that will help in a runaway greenhouse.... the runaway culprit however is water vapor not CO2....that is the nuanced point that everyone seems to miss.

[jackferwerda]

Great Video. I really enjoy your informative lectures/videos. Please do more.

[jas2754]

Thank You for your kind words... I am brimming with ideas for videos, it is just a lack of time...have not been able to do any more.

But words like yours are encouraging.

[HolyCatholicApostoli]

@skeletorawrrr

Thank you for explaining that. How could they overlook that is it built into their models? Also doesn't significant amounts of heat escape into space?

What about the Role of the Sun and its activity?

[erichaynes88]

The majority of this video is good with the exception of the "runaway greenhouse".

The temperature effect of CO2 is logarithmic. You get the same temperature change from CO2 going from 200 to 400ppm as you get from it going from 400 to 800. It is difficult to support a tipping point here.

The computer models show positive feedback from water vapor and clouds but actual studies show negative feedback. That means on hotter days, more heat escapes into space reducing the temperature change.

[greg556677]

I'll admit that I fall squarely into the skeptical camp. The part of the AGW theory that I have a hard time believing is the positive feedback loop caused by water vapor; that a little warming by CO2 will cause runaway warming. I understand the concept in theory but it doesn't match reality in practice. A single hot year should have theoretically set off runaway global warming long ago if it were true. I believe that the negative feedback relating to water vapor (clouds) is underestimated.

[nybotheveg]

that was a great video. im doing a projekt on global warming in my school this week and it have helped alot.

[nybotheveg]

now that its hotter, and the CO2 levels according to this video should be going down, it cant because we keep feeding the atmosphere with now greenhouse gasses from our old and outdated teknologies.