Ratking said:
[Can I get some answers with your words?
1) How much co2 is produced by nature and how much is man made?
2) How many percent of the c02 in the atmosphere is due to human intervention?
3) water vapor in the atmosphere increase the greenhouse effect, but how much is due to vapor and how much due to co2?
4)Why do you warmists have to lie about the temperature before 1950 to prove your case? Is it because the data do not match the results you need for your belief?
5) If the whole climate case ends up being a hoax, how will you redeem yourself from all the propaganda you have spread?(that will indeed be the same for me, the only difference between me and the warmist/you is that I do not force my belief on anybody through force of taxation and regulation)
From memory only:
1) Much more CO2 is produced by nature than by man. This is a specious argument: It does not require much change to upset the balance. Think of a finely balanced weighing scale with a 100kg on each end and you add 100g to one side. There are also positive feedback loops at work.
2) Mankind has (IIRC) caused CO2 levels to increase from ~300ppm to ~400ppm. So ~25% of the CO2 in the atmosphere would be due to man (directly or indirectly).
3) Water vapour is a potent greenhouse gas. This is another case of a positive feedback loop. A small increase in CO2 emissions causes warming, which creates more water vapour, which creates a larger warming effect, which creates more water vapour...
4) There are no lies about temperature trends. Although plenty of deniers claiming that cropped or altered graphs or the odd genuine publishing error is evidence of a lies and a conspiracy.
5) Err, CO2 levels are rising and the Earth is getting noticeably warmer. When will you accept you are wrong and the effect is real? When It only snows in Oslo once per year? Once every 10 years? Or never, because you keep moving the goalposts for "proof"?
Seriously, the arguments you detail above are all classic "denier" talk and have all been debunked long ago. I know this despite knowing relatively little about the subject - I am not an expert. The Skeptical Science website is just a good collection of many articles in one place and is easy to read. If you wish to check the source materials (references) it can all be found.
Also, science is not about "belief" and a scientific "theory" doesn't mean something is unproven.