Indeed.
You personally may not be making that argument, but it still regularly pops up here.
Yes, different proxies are useful over different time scales. The aggregate of all the different sources of information tells us that current warming is unprecedented in recent geologic history. 81bc vs 82bc is not important.
Anyway, temperature history is only one of many lines of evidence. There are numerous fingerprints that show present climate change is due to the greenhouse effect. For example, earth’s stratosphere and other upper atmospheric layers are cooling, while the troposphere/lower atmosphere is warming. This is consistent with the greenhouse effect and inconsistent with external forcing such as Milankovitch cycles. It was predicted in the 1960s and confirmed over the following decades. Same goes for the rising tropopause (boundary between troposphere and stratosphere). We also see relatively more warming at night vs than during the day (decreasing diurnal temperature range), which is again a consequence of the greenhouse effect.
I mean we have literally looked up at the sky and measured the increase in incoming radiation specifically at the wavelengths of greenhouse gases. Likewise, we have satellites looking down measuring the decrease in outgoing radiation. We can directly measure the change in flux. It's unmistakably due to greenhouse gases.
Weird take. The natural period is good but it isn't natural?
Still nonsense
Sorry I really don’t understand what you’re even trying to argue here. Carbon dioxide is undoubtedly rapidly building up in the atmosphere and we have proof it’s due to the combustion of fossil fuels. Yeah, nature has dealt with it before. As George Carlin said, “The earth will be fine; it’s the people who are ****ed.”
Right?! Maybe we should be careful experimenting with geoengineering on a global scale
