Oceanic conveyor belts, also known as warm-salt circulation and hot-salt circulation, are phenomena of deep-sea flow on a global scale. It controls 90% of the world's oceans and waters, plays a vital role in regulating the Earth's climate system, and may be one of the factors triggering climate change. In recent years, it has received the attention of the academic community, and a Hollywood blockbuster "The Day After Day" It also made it the attention of the general public.
Paleoclimatologists believe that in the history of geology, the stagnation of the "ocean belt" has affected the global climate and there are precedents. About 12,900 years ago, at the time of the late glacial period, the global climate gradually warmed up, but this trend was interrupted by the sudden 1300-year cold period, which was later called the "new fairy wood" period. The study found that at the beginning of the "New Fairy Wood" period, the average temperature in the northern hemisphere continental area dropped by 70C, and it rose sharply by 100C at the end of this period. Scientists generally believe that it is because of the stagnation of the "ocean belt" that it causes the northern hemisphere land to cool down, thus extending the glacial period of the entire earth.
At present, scientists are limited to guessing when the "ocean belt" is stagnant. Some people think that if the global average temperature rises by 70C by 2100. "Ocean conveyor belts" will likely stagnate; others believe that according to the current melting rate of Arctic glaciers, 150 years of "ocean belts" will be completely stagnant. Whether the stagnation of the "Ocean Belt" will cause "the ice age is coming" is still inconclusive. At present, scientific research does show that the demise of the "Ocean Belt" will cause the temperature in the middle and high latitudes of the Earth's northern hemisphere to drop, even reaching the glacial level; but it will also further warm the equator.