longweekend58 wrote on May 14
th, 2011 at 5:20pm:
The 'ether concept' can be easily dismissed by the simple fact that this theory demanded the speed of light to vary in different directions despite knowing that it is a constant (in a vaccum). Yet prominent scientists supported it.
Massive logical fallacy. Scientists believed in ether until the evidence led them not to believe in it. There is ZERO evidence that a 40% increase in CO2 wouldn't cause exactly the kind of warming we are currently witnessing. Unless you have some? Feel free to present it if you do!
Quote:You are agian supporting a theory that has multiple hoiles in it without even acknowleding their existence. I repeat: OCEANS emit 100 times as much Co2 as humans and yet you have to repeat the line that we are to blame.
A. It does not have 'multiple hoiles'. Feel free to present evidence to the contrary.
B. Yes, you keep repeating it
even after it is explained to you why your understanding is completely wrong. Allow me to repeat myself; yes, the oceans emit more CO2 than humans (actually it's a lot less than that, the total that the oceans and the biomass
combined is a bit less than 50 times what humans emit, but let's not quibble over something as trivial as
accuracy) but they also ABSORB more than humans emit. In fact, the absorb about 40% of human emissions, but it is the other 60% per cent that has accumulated in the atmosphere and caused CO2 levels to rise to the highest they have been in
15 million years.
Quote:and despite the claim that solar radiation is not the cause, there are temperture rises on other planets in line with our own. That should at least give you pause to wonder why when the ONLY common attribute is solar radiation.
They're not "in line" with ours, some planets appear to have warmed while others have cooled. But each planet has it's own climate mechanisms that cause those warmings or coolings. Take Mars for instance, if Mars' atmosphere changed for the same reason as Earth's then we'd be a frozen ball of ice because we'd be much the same temperature as Mars.
On Mars, the temperature is dictated by the amount of dust in the atmosphere, which reflects sunlight, when dust levels fall it warms, when they rise it cools.
On Earth, what prevents the planet from being a ball of ice is the presence of greenhouse gasses, the most important of which is CO2, and it stands to reason when you increase the amount of any particular greenhouse gas by 40% then it is going to change the temperature of the planet. It is absurd to say that Co2 doesn't keep the planet warm.
Quote:To stand a bit back from this debate Id say it is arrogant to assume man is the only cause of rising temperature or CO2 when there are simply so many variables in play. to assume that it is different this time and that todays warming is different to the thousand times it has happened in the past is arrogant and in itself unscientific.
It's not a matter of assuming anything. We can measure the rate of Co2 output and we can measure the rate of absorption, we have instrumental measurements showing that CO2 has increased dramatically, we have isotopic evidence proving that the Co2 in the atmosphere comes from burnt fossil fuels. We KNOW that there is an imbalance in what was a finely balanced cycle and that we are causing it.
As for the effects; we can measure the rate at which CO2 absorbs and re-emits longwave radiation and know precisely how much heat is trapped by CO2. We have satellites that can directly measure the incoming and outgoing energy and conclusively demonstrate the energy imbalance. We know that the excess heat is accumulating in the oceans, We have instrumental records demonstrating that temperatures are rising, we know that without the sudden rise in CO2 that temperatures should have decreased.
There is nothing, repeat NOTHING that can explain why CO2 wouldn't be warming the planet nor that CO2 isn't causing a current warming or for anything else that could be causing it. You have the grand sum of sweet F all.
Quote:You are in the thrall of science - which is fine. I love it too. The difference is that you treat scientific pronouncements like holy writ. I dont. Ive seen too many theories come and go to believe everything that is said. Ive seen too many predictions fail miserably to trust everything.
No I don't. I make an effort to understand something before forming a strong opinion on it. While you make arrogant pronouncements that you, as an unqualified person who has demonstrated a clear misunderstanding of basic concepts underpinning the global climate, is in any position to cast judgment on the scientists who have dedicated their lives to understanding the climate systems based entirely on what you have read in a tabloid newspaper.
That is a shocking display of blind ideology over scientific reason, if ever I've seen one.