Earth turns slower because of global warming

The ice melts due to global warming causing the Earth to rotate more slowly and become longer.

Climate change causes the ice to melt, causing the Earth's rotation speed to slow

Gravity from the Moon and Sun continuously reduces the speed of Earth's rotation. However, in the short term, many different factors can promote or slow down this rotation speed.

Earth turns slower under the influence of melting glaciers and rising sea levels.(Photo: Youtube).

Previous research found that melting ice due to global warming causes a significant increase in sea level in the 20th century. In theory, sea level rise is estimated at 1.5 to 2 millimeters a year. making the Earth's axis change slightly and increase the planet's rotation speed.

When the ice blocks melt, the weight over the rock below decreases. The rock then emerged, the polar region became rough while the planet was generally rounder. As a result, the Earth tilted a little more and spun faster.

However, researchers did not find direct evidence that melting glaciers led to changes in the Earth's rotation or shaft as predicted. In the new study, a group of American scientists discovered the reason and published a detailed discovery in the journal Science Advances on December 11.

Glaciers melt in the polar region.(Photo: beforeitnews).

"The increase in sea levels and glaciers melting in the 20th century is confirmed not only by the dramatic changes on the Earth such as floods, droughts and hot sunshine but also small differences in rotational speed." , Science quoted Jerry X. Mitrovica, a geophysicist at Harvard University, Massachusetts, USA, who led the research.

Scientists noted that recent research shows that glacial melting levels are not as serious as assumed. Using computerized calculations and simulations, they discovered previous studies based on an error model of the structure inside the Earth. This means they do not accurately reflect the influence of the glacier on the rock beneath and the Earth's rotation. Furthermore, the interaction of the rock layer on the Earth's surface and the planet's molten metal core also contributed to slowing the rotation.

As a result of measuring the tide and satellite data on sea level and the impact of the glacier, the team calculated that the slower rotation of the Earth would make each day longer than 1.7 milliseconds.