Yup, deserts move and in some areas expand. Tropical weather moves toward the poles, or even dominates all latitudes. Tundra disappears. Ice caps disappear.
Some of this depends on geography, and local terrain features. Lake effect precipitation or thermal activity against natural rock faces and outcroppings, which can change with tectonic activity. A silver lining is that new areas become eligible for rain forests, but only across geologic time scales. Not like next decade.
Desertification, on the other hand, progresses sometimes within a generation.
Mass death tends to move faster than flourishing growth, since growth explosions are rare outside of viral growth, algae blooms and invasive species (or biblical plagues like locusts) which tend to be bad things. Asian carp and huge jellyfish are neat, but humans dislike them, despite being generally successful amid new conditions or otherwise invasive.
Some of this depends on geography, and local terrain features. Lake effect precipitation or thermal activity against natural rock faces and outcroppings, which can change with tectonic activity. A silver lining is that new areas become eligible for rain forests, but only across geologic time scales. Not like next decade.
Desertification, on the other hand, progresses sometimes within a generation.
Mass death tends to move faster than flourishing growth, since growth explosions are rare outside of viral growth, algae blooms and invasive species (or biblical plagues like locusts) which tend to be bad things. Asian carp and huge jellyfish are neat, but humans dislike them, despite being generally successful amid new conditions or otherwise invasive.