AMOC system is water circulation (Oceanic currents) in the Atlantic Ocean, which are caused by changes in the density of sea water with temperature and salinity. course on ocean currents direction It is also affected by tidal phenomena, the Earth’s rotation and global air circulation.
system saves continuous exchange of energy between the tropics and the polar regions. It flows from the equator all the way to the North Atlantic Gulf Stream (Gulf stream). At the height of Greenland and Labrador, it cools and sinks. Then it turns into deep North Atlantic waters that flow near the ocean floor and return to the south.
The Gulf Stream in the North Atlantic “turns” into North Atlantic Streamwhich flows from Northern Ireland and Great Britain, and then into Norway. This current has a calming effect on the European climate. If there is no, then Poland Similar climatic conditions as in Canada.
The Gulf Stream also helps the tropics “get rid ofExcess heat.
It was recorded around 1930 slow down the currents in the North Atlantic region. In recent years, the acceleration of this phenomenon was confirmed. is the reason global temperature rise. The result is increased melting of the glaciers in Greenland and Antarctica. The influx of fresh and cold water into salty sea water disturbs the thermodynamic cycle (the circulation caused by changes in water density depending on temperature and salinity).
In the geological past, the collapse of AMOC . may have been caused by Ice Age setbacks or the emergence of very cold periods lasting about 1000 years (for example, the Younger Dryas period). During the collapse of the climate in Younger Drissi Megafauna became extinct in the Ice Age, incl. Woolly rhinoceros, mammoths or tigers with teeth.
About 5 billion tons of ice has melted from Greenland in the past 20 years. The rate of melting of glaciers and ice sheets is expected to accelerate in the coming years, which in turn may lead to AMOC system crash.
Scientists in Latest article Describe a global and comprehensive model they developed Climate change output in the event of an AMOC collapse. In this way, they wanted to see what could happen in Europe and North America, but also in other regions, such as Antarctica.
Simulations showed that if the AMOC collapsed, huge masses of heat would begin to accumulate south of the equator. It will happen in the interior severe dryness. This will push warm, moist air into the upper troposphere, which in turn causes dry air to fall over the eastern Pacific Ocean.
Such changes would enhance trade winds (Constant warm winds) Pushing warm waters towards the Indonesian seas. would torrential rains and floods, including. in Australia.
Simulations also indicated that pressure systems over Antarctica will change, which will lead to a change in pressure Accelerate the rate of ice cap melting and ice shelves. This would change the ocean circulation.
Thermal changes may lead to ocean ecological disasterWhere millions of marine animals could die. This would lead the world’s economies into a major crisis. In Europe, average temperatures can drop even by several degrees, which could again lead to an environmental and economic disaster.
In order to prevent these changes, it is necessary to develop new, low-emissions branches of the economy and “switch” to Renewable energy sources.
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