Our atmosphere protects us from the Suns powerful solar radiation and heat. The atmosphere been good to life in its "natural" sate so far. Humans are relatively new to the scene of life, but we are having a massive impact on our environment.
We are changing the natural composition of the atmosphere with every CO2 and Methane gas we release. Not only do we have to worry about "global warming" but there is going to be extreme weather on all fronts.
Check out this wiki concerning the 2013 Extreme Weather anomalies.
http://en.wikipedia.org/wiki/2013_extrem...
Even Zippi62 points out that there is water in Earth's atmosphere that also contributes to the greenhouse effect. Without the CO2 in the atmosphere, the Earth would be a giant ball of ice.
Kano's argument is precisely in the wrong direction to prove his point, this has been pointed out to him before but he has ignored it. He also seems to have missed that because of the high albedo of Venus, the average incoming solar radiation on Earth is HIGHER than on Venus, despite Venus being closer to the sun. Oops, that argument is blown.
Since he says Venus is warm because of his "Thermus flask effect" it might behoove him to learn how Thermos flasks work.
Science does not depend on endless internet recycling of anti-science myths.
http://www.skepticalscience.com/water-va...
U.S. National Academy of Sciences, 2010:
http://books.nap.edu/openbook.php?record...
“Climate change is occurring, is caused largely by human activities, and poses significant risks for a broad range of human and natural systems.”
http://www8.nationalacademies.org/onpine...
“Choices made now about carbon dioxide emissions reductions will affect climate change impacts experienced not just over the next few decades but also in coming centuries and millennia…Because CO2 in the atmosphere is long lived, it can effectively lock the Earth and future generations into a range of impacts, some of which could become very severe.”
http://www.physics.fsu.edu/awards/NAS/
“The Academy membership is composed of approximately 2,100 members and 380 foreign associates, of whom nearly 200 have won Nobel Prizes. Members and foreign associates of the Academy are elected in recognition of their distinguished and continuing achievements in original research; election to the Academy is considered one of the highest honors that can be accorded a scientist or engineer.”
You fail to understand how the greenhouse effect works. The atmosphere is very thin on mars. 96% CO2 doesn't mean there's enough there to cause global warming, it just means that what little atmosphere it has is mostly CO2.
Climate Realist gives the right answer on Earth vs. Mars in just 25 words. The 1 word answer is "feedbacks".
As for Venus, nights and days equally hot are in fact exactly what Venus's runaway greenhouse effect does. To put it simply, greenhouse gases limit how much heat escapes from Venus regardless of solar input. Same goes for Venus's poles, which are the same temperature as Venus's equator for the same reason. Compare to Mercury, which has subzero nights and subzero poles.
Assuming just for the moment that your figures are correct. [I have some doubts]
You forget that the Earth is just a few millions of km closer to the sun. As solar radiation intensity decreases as a square of the distance this will have some serious effects on your calculations.
Venus is the model for what the earth might become from global warming not Mars. you do not have the slightest idea what you are talking about.
The real danger of global warming is not the heat, it is that it might trigger an ice age that is not set to happen for another 6,000 yrs or so. Most of America would be gone, under ice, and you cannot stop an ice age.
That is what happens when this planet gets to hot, and we are making it too hot. The heat and sea levels will kill a lot of people before the ice age does however I'm afraid.
The fact that both Mars and Venus are cold and hot has nothing to do with CO2, it is because mars is farther than the sun and has a smaller mass and thin atmosphere, while Venus orbits nearer to the sun, is much bigger and has 61 times the atmosphere that Earth has.
Venus is not demonstrating the greenhouse effect because it's daytime and nighttime temps are the identical (737K) it's what I call the Thermus flask effect, no heat in no heat out.
Mars is further from the Sun than Earth is. And on Earth, carbon dioxide has a dance partner that it lacks on Mars; water vapor.
Mars is 96% CO2 and has an atmospheric thickness of 0.006 bar. It has a greenhouse effect of only 5 degrees C. The CO2 on Earth equals 0.004 bar so that would mean that CO2 on Earth would only contribute to a 3.33 degree C rise in temperatures. I think it hardly makes CO2 the drive that warms the planet.
Mars doesn't have water. It is very limited there.
When we don't have the United Nations governing how our water is treated and not trying to govern our scientific issues, then humans might have an idea of what controls our climate.
