It is widely known (to the general audience, I'm not a climatologist) that global warming will let the desert climates migrate further away from the equator towards the poles, such that the South of Europe is becoming more and more desert-ish. (see e.g. this article)
Now my question is: if the desert climates migrate; will the tropical climates also migrate / expand to a broader belt around the equator? Often, it is possible to live quite comfortably as a human in such a region.