Leaked reports of the Fifth IPCC Report, due next month, say the IPCC experts are now 95% sure that human activities and emissions are the main cause of global warming since the 1950s.[1]
The same IPCC experts remain 100% sure that the Dakotas, Nebraska, Kansas, Oklahoma and Texas are homes to tropical forests, and that they have been since 1995.
But given a doubling of global CO2, they expect the central US tropical forest belt to shift eastwards to Minnesota, Wisconsin, Iowa and Illinois, even stretching east to Ohio, Michigan and Pennsylvania.
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Looking at my own part of the world, I see that the IPCC has Papua-New Guinea, Indonesia and the Philippines currently covered in savannas, dry forests and woodlands. But with global CO2 doubling, the prairies of south-east Asia will surge northwards to Malaysia, Vietnam, Laos, Myanmar, even southern China.
India, as in the map below, acquires tropical forests through about 70% of its area. For some reason, the IPCC's tropical forest belt of northern Australia (most Aussies believe it is gum-tree land) advances south by about 1000km, such that tourists towns like Cairns and Townsville become surrounded by Congo-like vegetation, suitable for imported bonobos and, maybe, okapi.
Comment: While it was once rare to see noctilucent clouds, it's becoming quite common these days due to increased comet dust in the upper atmosphere:
Global dust veil: Dust belt from the overhead cometary explosion in Russia raced around the world in just four days