A series of exchanges at Millard Fillmore’s Bathtub is a good occasion to re-iterate a simple point: the IPCC has to this day failed to prove that climate change is a worldwide effect.
In other words, there still is no solid evidence of the “global” character of “global warming”.
Let’s look at the IPCC AR4-WG2, Chapter 1.
I presume a “climate non-skeptic” would treat that document as an authoritative source. Better than vague reports on insurance companies or moving plants.
And so: the IPCC AR4-WG2 Chapter 1, dedicated to report ALL changes in a warming planet, lists:
(a) 26,285 significant changes compatible with warming
(b) 3,174 significant changes not compatible with warming (around 11% of the total of 29,459 significant changes)
Plenty to pick-and-choose from, I am sure. But then there are also other quite important numbers from the same report:
(c) 28,234 significant changes are from Europe alone
(d) 1,225 significant changes are from the rest of the world (4.15% of the total)
(e) 25,135 significant changes compatible with warming are from Europe alone
(f) Only 1,150 significant changes compatible with warming are from the rest of the world (4.4% of the total of 26,285 significant changes compatible with warming)
Note that (b) is almost two times bigger than (f). And I haven’t even mentioned the fact that the vast majority of non-European significant changes, come just from North America.
And so, in a sense, it is the IPCC itself that says that the “global” in “global warming” is something that definitely still needs to be demonstrated.