Our climate allows heat from the equator to the poles is via sea and wind currents. Our climate is a nonlinear system, say scholars. By this is meant that not all changes are gradual. Sometimes it comes in jumps. The global average temperature is about 14 ° C. If the 2 ° C rise that is predicted at least these are the consequences: an increase of 0.5 ° C at the equator but from 7 ° C on the pole. All that wind and sea currents have remained relatively stable since the Ice Age, but now, however, we see changes.
One of the most worrying and most studied problems is the area where the Gulf Stream comes into contact with the cold arctic winds. By evaporation of the moisture is to Western Europe carried by the wind and the rotation of the earth. All currents are connected to one another in a loop, the 'Oceanic Conveyor ". Red are the warm currents above such as the Gulf Stream. The blue ones are the cold currents in the opposite direction. We do not notice because they flow on the seabed. Once in the Atlantic, the heat has evaporated, keep colder and saltier water over because salt does not evaporate whereby water is heavier. That cold, heavier water sinks to 19 billion liters per second. Afterwards, the water flows back to the south. |