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| quote: | Originally posted by DigiNut
The second chart is just a more colourful version of the infamous "hockey stick" which has been so thoroughly debunked and admitted as misleading by even the most dedicated environmental scientists (except perhaps for David Suzuki).
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No the hockey stick theory has been challenged by a rich mining executive and an economist. No suprises there that THEY would come up with some sort of sprious challenge to a theory that while controversial has more supporters than challengers. There has easily been as much scientific work done to prove Mann's theory is correct than to disprove it.
| quote: | Originally posted by DigiNut
The chart begins at 1900 in spite of the fact that we actually have some temperature data dating back much farther. In particular, it ignores the well-documented Medieval Warm period which ended in the 15th century, followed by the Little Ice Age which ended in 1850.
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Yes there is some controversy over this part. I don't know enough about this particular piece to comment.
| quote: | Originally posted by DigiNut
3. The chart ends at 1990. Which is very convenient, because the warming trend has not continued at all during the past 5-10 years.
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The trend continues beyond 1990. You know was well as I do that data analysis and reporting takes time...
| quote: | Originally posted by DigiNut
4. The apparent correlation with CO2 emissions (which again, does not correlate so well during the past 5-10 years) is of course interesting and worth looking into - which we have been doing - but does not in and of itself prove causation. If it can be proven that the current warming is part of a natural cycle (and it has been - the current scientific debate focuses on the extent of the cycle and whether or not it fully accounts for the rise), then the correlation is effectively meaningless.
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There has been plenty published on this topic. I dont need to rehash it here. Once again, your comment about the past 5-10 years is pure conjecture. Scientists use Co2 as a benchmark for ALL greenhouse gasses that originate from emissions. If you look at graphs, they say GREENHOUSE GASSES, not Co2. We are kind of talking about different things here. Yes, there are probably some flaws in the Co2 benchmark methodology, but as far as I am aware it is the best proxy for measuring emissions.
| quote: | Originally posted by DigiNut
5. The average global temperature is in and of itself a questionable figure. Claiming that the average "global" temperature is rising faster than it should be is very much akin to claiming that the average length of people's first names is increasing too fast. Temperature and climate by their very nature aren't global, they are extremely localized, and if you're going to aggregate them into a single number then you have to be damn sure you're accounting for local phenomena (such as the heat island effect, which the hockey stick totally ignores), as well as the statistical uncertainty that results from aggregating data from many statistically-variant sources.
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Sure, but look at the huge increase in weather polarization that has been observed over the past twenty years. While Africa is being raped by drought, we've experinced 11 thunder storms so far this month... last year there was 2.
| quote: | Originally posted by DigiNut
I could go on of course, but I don't think there's any point. I'll just end with this: you claim that one would have to be a moron to doubt that there's a scientific consensus, so I present you this petition, signed by 31,072 scientists, urging reconsideration of Kyoto citing a lack of scientific evidence.
But I'm sure they're all just right-wing industry shills. Anyone can get a Ph.D nowadays!
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Wow that website looks so legitimate!! IT MUST BE TRUE.. THE INTERNET IS ALWAYS RIGHT... especially the 31,072 scientists (especially the 9021 with PhD's). I am especially fond of the childlike writing of the person who wrote "physics" on the form. More conjecture from you, with no fucking evidence whatsoever.
I dont know about you, but I think the IPCC has JUST A LITTLE more legitimacy than some spark.com personality test about global warming.
The fact that you even remotely dispute the correlation between greenhouse gases and global warming is indicative of the same right-wing quasi-scientific pseudo intellectualism that we have come to expect by the U.S government and its constituents. You must love Macdonald's as much as they do!
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