Quote from drjekyllus:
Wow, you correct spelling on internet forums. If you can't defend the argument then look for words they misspelled. Thats enlightment.
Quote from drjekyllus:
1. We have to have real evidence that we are causing global warming and the human induced GW has to be significant. This has not be demonstrated.
2. It has to be shown that the human induced increase in temp is harmful. I have not seen any evidence of this. Why we assume we know the optimal temp of the Earth is beyond me.
3. It has to be shown that we can actually control it. I have seen zero evidence to suggest that we have any way to change the climate in a way that we see as beneficial.
Quote from bigdavediode:
Actually it has. Isotope monitoring of C13/C12 ratios has shown conclusively that the additional CO2 has been man made.
References:
Bousquet et al. (2000), Regional changes of CO2 fluxes over land and oceans since 1980, Science, Vol 290, 1342-1346.
Ciais et al. (1995), A Large Northern Hemisphere Terrestrial CO2 Sink Indicated by the 13C/12C Ratio of atmospheric CO2, Science, Vol 269, pp. 1098-1102.
Keeling, Piper and Heimann (1996), Global and hemispheric CO2 sinks deduced from changes in atmospheric O2 concentration, Nature, Vol 381, 218-221.
McNeil et al. (2003), Anthropogenic CO2 uptake by the ocean based on the global chlorofluorocarbon data set, Science, Vol 299, 235-239.
Takahashi et al. (2002), Global sea-air CO2 flux based on climatological surface ocean pCO2, and seasonal biological and temperature effects, Deep Sea Research, Vol 49, 1601-1622.
There have already been proven costs of biodiversity. Ocean acidification and rising oceans alone pose a serious threat as can be seen here:
http://www.env.duke.edu/solutions/documents/Oppenheimer_ONeill.pdf
So yes, the human increases in CO2 have been harmful and if the THC shuts down, as it will at high CO2 concentrations there is only a modest probability of "unmanageable outcomes." Quite the dice roll.
Clearly we already did control it so your thought that we can't control it is false. So now we have to reduce the impact of these emissions as much as possible.
Quote from AAAintheBeltway:
This illustrates the problem. Bigdave actually seems to think his post rebutted the three questions. Now he will post for 20 pages saying he rebutted them. In reality, he reached into his data base of talking points and tossed out a few non sequitors.
Quote from bigdavediode:
Here are the points he made:
"1. We have to have real evidence that we are causing global warming and the human induced GW has to be significant. This has not be demonstrated."
Massive evidence has been supplied.
" 2. It has to be shown that the human induced increase in temp is harmful. I have not seen any evidence of this. Why we assume we know the optimal temp of the Earth is beyond me."
This is addressed in the paper linked. I can happily go into more detail, as the IPCC dedicates entire pages to what constitutes a dangerous level of CO2 and why.
" 3. It has to be shown that we can actually control it. I have seen zero evidence to suggest that we have any way to change the climate in a way that we see as beneficial."
Since we already have controlled it, it is obvious that we can and did control it.
Would you like to clarify, AAA, what exactly you feel I missed?
Quote from AAAintheBeltway:
I actually thought it would take more than a few minutes for him to start claiming he rebutted the unanswered questions, but maybe it is a slow day for interns at the DNC.
Dave, sorry but citing IPCC reports is not proof.
They are deeply flawed political documents, disavowed by some of the more prominent scientists who participated.
There are no credible studies proving CO2 has caused any rise in temps. How could there be when temps have declined over the past ten years and maybe longer?
Citing a few scare articles about loss of "biodiversity" likewise proves nothing. We know the planet has flourished in the past with higher temps. Change is inevitable in any case.
You seemed to have totally missed the point of his third question. Your answer is a non sequitor. He is asking what proof is there that if we do everything nutcases like hansen and obama want that there wil be any effect on global temps?
Particulalry when the chinese have already blown us off on doing anything themselves?
Clearly the answer is we will have destroyed our economy and caused people massive burdens for no discernible reason, except to give democrats total control over the economy. It's become increasingly obvious that is the only point of this entire exercise.
Quote from bigdavediode:
Actually it has. Isotope monitoring of C13/C12 ratios has shown conclusively that the additional CO2 has been man made.
References:
Bousquet et al. (2000), Regional changes of CO2 fluxes over land and oceans since 1980, Science, Vol 290, 1342-1346.
Ciais et al. (1995), A Large Northern Hemisphere Terrestrial CO2 Sink Indicated by the 13C/12C Ratio of atmospheric CO2, Science, Vol 269, pp. 1098-1102.
Keeling, Piper and Heimann (1996), Global and hemispheric CO2 sinks deduced from changes in atmospheric O2 concentration, Nature, Vol 381, 218-221.
McNeil et al. (2003), Anthropogenic CO2 uptake by the ocean based on the global chlorofluorocarbon data set, Science, Vol 299, 235-239.
Takahashi et al. (2002), Global sea-air CO2 flux based on climatological surface ocean pCO2, and seasonal biological and temperature effects, Deep Sea Research, Vol 49, 1601-1622.
There have already been proven costs of biodiversity. Ocean acidification and rising oceans alone pose a serious threat as can be seen here:
http://www.env.duke.edu/solutions/documents/Oppenheimer_ONeill.pdf
So yes, the human increases in CO2 have been harmful and if the THC shuts down, as it will at high CO2 concentrations there is only a modest probability of "unmanageable outcomes." Quite the dice roll.
Clearly we already did control it so your thought that we can't control it is false. So now we have to reduce the impact of these emissions as much as possible.
Quote from drjekyllus:
1. I see a lot references to CO2 and very few references to temp. My claim made zero references to CO2 so I don't know why you brought it up. My argument is strickly based on temp. Since GW is about the temp, lets start there.
2. There have been max extinctions way before we came along and countless species which have gone extinct since humans were around but before the burning of fossil fuel. It happens. The warming of the Earth can have positive AND negative effects. When all you do is spew the negative, you come across as a doomsdayer and the doomsday scenerio as put forth forth by the GW alarmist has ZERO credibility.
3. We control it? Its a chaotic system. Please show where we controlled it. We don't control the climate and we can't control the climate. This claim stinks of pure arrogance.