Quote from jem:
is that a joke for answer? I asked a seriously simple question
show that man is causing warming?
How could you not have that proof readily available?
where is the science
where is the data
what part of that is being caused by man?
There is very very rarely "proof" of anything in science. Science is validated by evidence and observation not by formal proof which is the domain of mathematics and philosophy.
I repeat again, there is mountains of science. The point is that you and your fellow travelers are incapable of comprehending it. The fact is that all the peak bodies of science including such institutions as the Royal Society, the American Geophysical Union, the US Academy and many corresponding institutions in other nations plus world renowned research universities and research organizations such as NASA, NCDC, CSIRO and many many more ALL accept that there is overwhelming scientific evidence for AGW.
Is it not strange that some unqualified posters on some internet forums declare that there is no evidence?
Just to give you some tips on where to start:
1. Global temperature is rising sharply
2. CO2 is a greenhouse gas. It has strong absorption bands in the infrared. The atmosphere is (from a GHG viewpoint) not saturated with CO2 due to pressure broadening of of the absorption bands and due to the physics of radiative transfer in the atmosphere. What happens at top of atmosphere counts.
3. CO2 concentration in the atmosphere is sharply rising. The increase is overwhelmingly due to human activities as confirmed by isotopic studies of atmospheric carbon.
4. The enhanced greenhouse effect is confirmed by satellite and ground studies showing an energy imbalance for the planet. More is coming in than going out.
5. Changes in solar radiation are far too small to account for the radiative imbalance. Observation confirms this.
6. The effect of CO2 is amplified by positive feedbacks. Especially important amongst the positive feedbacks is the increasing specific humidity of the atmosphere. Observation confirms this.
7. A number of very important observations cannot be properly explained in terms other than an enhanced greenhouse effect. These include:
a) Nights warming faster than days
b) Poles warming faster than equator
c) A cooling stratosphere.
There's plenty there to get started with.