Learning from feedback mechanisms it makes sense that the polar regions of Earth have warmed much more than the tropics because, in the tropics there is more water and heat which can in turn cause weathering because the rocks are exposed to the water causing chemical and physical changes. Which is a negative feedback that causes the atmosphere to cool because when the rocks undergo these changes their minerals are dissolved which is what gives the atmosphere carbon dioxide, if this is taken away it will weaken the greenhouse gas effect which will in turn cause the earth to cool, the hotter it is, the faster this reaction will happen causing warmer and wetter areas (tropics) to cool faster than polar areas.