[ancient_geezer]

Screw the grandkids: I'm cold now!

How well are you fixed with parkas and snowshoes?

 

 

Ice Ages & Astronomical Causes
Brief Introduction to the History of Climate
by Richard A. Muller
&
Origin of the 100 kyr Glacial Cycle

 

Figure 1-1 Global warming

 

Figure 1-2 Climate of the last 2400 years

 

 

Figure 1-3 Climate of the last 12,000 years

 

Figure 1-4 Climate of the last 100,000 years

 

Figure 1-5 Climate for the last 420 kyr, from Vostok ice

[RockinRight]

So, basically, the Earth was it's warmest ever during the Roman era???

[wmfights]

Am I wrong but in your last graph it looks like every 100,000 years or so there is a warming that is similar to what everyone seems so concerned about. If so whats different this time?

[2ndreconmarine]

Extraordinary post. Thank you.

Your graphs are excellent. I am not an atmospheric scientist, but from just general science I would have made the following conditions to establish anthropogenic global warming from the historical temperature data:

1. Either the global mean temperature is above the historical upper limits, or

2. The recent relative change in global mean temperature is larger than the historical variations in the global mean temperature, or

3. The time derivative of the global mean temperature was larger than it had ever been before in history.

From you excellent data, it is quite clear none of these conditions apply. The data (from inspection as well) indicate that global warming is not supported by the data.

I would love to hear what the global warming enthusiasts, at least those who are scientits, have to say about these data.

Thanks again.

[Drammach]

I read somewhere that it ( the average [mean?] global temperature) has actually gone down for the last couple of years..
That it isn't getting hotter anymore, it's getting cooler again..
( At least in the very short term )