The important thing is to move and sell BEFORE other people figure out what's happening. Already, not everyone believes the idea that The Greenhouse Effect is going to turn Earth into Venus or even that the tide will rise 10 metres, nor that hurricanes will pound the coast month after month, or that forests will turn to desert and polar bears turn into sea otters. CO2 is a single variable. Even if CO2 remains constant, the climate doesn't. It's an ice age and we are in what's called an interglacial, and we are at the tail end of the interglacial, with deserts at their full extent, reflecting vast amounts of light back to space. When the heater we call the sun fizzles in the next solar minimum, the reduced insolation will mean cooling, extended dew points, increased snow, increased reflection from snow and cloud, which will create a cooling feedback loop.
By the time your hibiscus ask you to move them south, property prices will have already taken a turn for the worse and nobody will want to buy your house covered in snow in July.
2020 is when the snow will be thick on the ground. But for 3 winters before that, it will be quite cold and as with the previous three northern winters, 2008, 2009 and 2010, looking very unGreenhousey.
Mqurice |