Originally Posted by biatchi
had a quick read through that pdf and it's got some hardcore info but from what i read it it mostly covers modern times and predictons based on todays figures, whereas the documentry looks back in time and says that the earth has been hotter than it is now before there was any industry or human pollution so i can't be our fault.
i was months ago i watched it so remembering specific details is hard. it was very intersting though i reaaly recommend watching it
The report takes historic and pre-historic data into account:
* The amount of carbon dioxide in the atmosphere in 2005 (379 ppm) exceeds by far the natural range of the last 650,000 years (180 to 300 ppm).
* The amount of methane in the atmosphere in 2005 (1774 ppb) exceeds by far the natural range of the last 650,000 years (320 to 790 ppb).
* Average Northern Hemisphere temperatures during the second half of the 20th century were very likely higher than during any other 50-year period in the last 500 years and likely the highest in at least the past 1300 years
* The probability that this is caused by natural climatic processes alone is less than 5%.
Also, the issue is of the rapid change
in global temperature. Yes, the Earth has been hotter but how long did these temperature flucations take? The issue with global warming is that we might be seeing 1-6C temperature change in less than 100 years. Before anyone says that isn't much... that's 9F and would mean the difference of million/billions of tons of ice melting.
My question with the documentary... how much research was done and how was it peer reviewed? Peer review is the keystone to science. Here is how the ipcc report is validated: "The report was produced by around 600 authors from 40 countries, and reviewed by over 620 experts and governments. Before being accepted, the summary was reviewed line-by-line by representatives from 113 governments."