The world will become unevenly greener. Population density and recent population rise is inversely correlated with places that will get greener.
Polar and Continental regions will get greener at the expense of the tropical and equatorial regions.
Mass migration is the inevitable conclusion of uneven impacts of climate change. Ie. In 2026, Political climate and physical climate are moving in mutually incompatible directions.
put another way, it's Central Canada that's going to be the rainforest
the existing rainforests will turn into Sahara 2.0