New Scientist has an interesting article this week. It shows how temperatures around the world would change IF the world warmed by 4C on average whatever the cause.
Basically air temperatures over land would warm by much more than air temperatures over the sea. For example Australia would warm by 6C and North America by 7-10C. Parts of Russia and Africa by 15C. By contrast the southern pacific and would warm by only 1C.
The article begins..
"By 2055, climate change is likely to have warmed the world by a dangerous 4C unless we stop pumping greenhouse gasses into the atmosphere the way we do now" ... "Even if we are lucky, we we are still likely to hit 4C by 2070."