What is the global transport belt?

Global conveyor belt is the name given to the main circulatory system in the world oceans. Ocean water circulates on a global scale and creates flows that are known as thermohalin currents because they are powered by temperature and saltiness. The streams consist of large loops consisting of warm surface currents and cold deep currents. These are connected where hot water cools and descends, and where deep cold water is heated and rises. It is estimated that the global transport belt takes about 1,000 years to complete one cycle. Warmer water from the other south flows to take place, while the cold salt water flows south at a deeper level and eventually approaches the Antarctic coast. Here the flow is divided into two strands, one loop around the Indian ocean and the other forms a larger loop around the Pacificacean. As the water flows north to these oceans and towards the equator, it begins to warm up, becomes less dense and rises to the surface north of the equator. When they hit the mainland in the northern parts of these OCEánů, water again south, then flows west back to the Atlantic and turns north to complete the loop.

Global transport belt has a great impact on the climate. For example, hot water flowing into the northern Atlantic towards the Arctic region has a mitigating effect on winter temperatures in northernwest Europe, resulting in a much milder climate than other areas in similar widths. Without a global conveyor belt, the United Kingdom climate would resemble a climate on Alaska.

It was proposed that the global transport belt has slowed down, was sometimes limited or stopped in the past. This could have been caused by the melting of ice plates and Glaciers in the Arctic region - for example, the Greenland ice range. The inflow of fresh water would reduce the salinity of the ocean water and prevent it from sinking and cause freezing at a higher temperature. Without sinking water in the Arctic, it would stop the north of warm water; This would result in a sudden change to mnohem cooler climate in northern Europe. Some evidence suggests that cold spells in northern Europe have agreed with the extensive melting of polar ice leaves and glaciers over the past few decades.

There is concern that climate change can cause the global conveyor belt to stop again, drastically cooling the climate of northern Europe. The evidence suggests that temperatures rise above the arctic, resulting in melting parts of the ice cover of Greenland. Some scientists are afraid that a large amount of fresh water from ice melting can sufficiently reduce the salinity of seawater to prevent it, efficient shutdown of the transport belt.