Alex123 wrote:Kim O'Hara wrote:This time is different.
Laws of physics, chemistry, etc, have changed?
Kim O'Hara wrote:Not always.
The study suggests that CO2 is produced after temperature change. So CO2 is neither the cause, nor amplification of temperature.
Think about it: temperature warms up and more CO2 gets released into the air from ocean, snow, etc.
The definition of "feedback" is that CO2 is
both a cause and an effect of global warming. Once in the atmosphere, it is a cause. When in the ocean, global warming is the cause leading to it going into the atmosphere. So, when there is another cause of warming, CO2 rise is an effect. But when CO2 is artificially release from deep earth sources (via coal mining, oil drilling, and fracking) then the additional CO2 in the atmosphere can be a cause of global warming. Therefore, a rise in CO2 is both a cause and effect of global warming. A fall in CO2 is both a cause and effect of global cooling.
Your assertion that CO2 can not cause warming because it is an affect of warming assumes that: If A causes B, then B does not cause A. However, this assumption is not necessarily true in a multi-variable equation with feeback loops. There are several lines of evidence that CO2 in the atmosphere does cause warming. The Vostek ice cores are not necessary to prove that fact.
I provided this link before, but I think it is again relevant:
This entire link is worth reading, but I will quote the especially relevant point:
http://climate.nasa.gov/evidence/
The heat-trapping nature of carbon dioxide and other gases was demonstrated in the mid-19th century.2Their ability to affect the transfer of infrared energy through the atmosphere is the scientific basis of many JPL-designed instruments, such as AIRS. Increased levels of greenhouse gases must cause the Earth to warm in response.
Sotthī hontu nirantaraṃ - May you forever be well.