For the last 200 years we have been burning oil, gas, and coal which has released carbon dioxide into the atmosphere. Plants rotting and animal digestive systems release methane into the air. Carbon dioxide and methane trap heat from the sun that would be reflected back to us as infrared light. This additional heat in our atmosphere adds to warmer summers and warmer wetter winters in the North. Storms increase in the south in the winter and summer draughts occur where farming is intense.
Sea levels rise with rivers and low lying wetlands overflowing.
It is predicted that Spain will be a desert and France will be like Spain is today. As the ice caps melt the ocean will become warmer. Atlantic coast beaches will disappear. Rainfall will increase and flooded areas will flood more. Water will evaporate faster so deserts will be drier.