The ice caps are melting. A huge piece of Antarctica just broke off because the ice is melting. This melting is leading to higher ocean levels. Scientists estimate that ocean levels have risen 4-8 inches in the last 100 years. Melting ice is raising the ocean levels. This could cause California, Florida, Texas, and much of the U.S. coastline to eventually go under water. Iceberg B22 that has broken off from Antarctica, as seen from a satellite camera. This massive piece of ice is about 2,120 square miles in diameter. Warmer air will mean more frequent and more severe storms (thunderstorms, hurricanes, tornados). Rainfall has gradually increased over the last hundred years, as temperature has risen. Rising temperatures may also make some areas more arid than they already are because of the increased heat. It is hard to say what will happen to specific regions.