A new distribution of the oceans increases the speed of rotation

The Earth's rotation speed is being affected. Global warming causes the poles to melt, which in turn causes a redistribution of water masses on the planet.

ABC reported that although a large volume of water is needed to change the speed of the Earth's rotation, this phenomenon is already happening.

The discovery, published in the journal Nature, explains that over the past few million years, the Earth's rotation speed has gradually decreased. As a result, the solar day lengthens by 1,7 milliseconds every century.

However, for many years the rotation of our planet has not followed this trend. Instead of getting longer, the days are getting shorter, which can clearly show that the speed of rotation is accelerating. In fact, there have been some days since 2020 that have been “incredibly short.”

The shortest day on record is June 29, 2022

That Wednesday the record was broken: the duration was 1,59 milliseconds less than 24 hours. And this leads to speculation about the need to subtract a second from 2026, as was already done in 2016. However, a study published in the journal Nature shows that this will not be necessary until 2029.

Physicist Duncan Carr Agnew of the University of California, San Francisco, said: "If melting had not accelerated recently, this problem would have occurred three years earlier."

How does melting ice affect rotation speed?

In a study published in the journal Nature, Agnew sought to understand how melting ice affects the Earth's rotation.

This is achieved by continuously monitoring Earth's gravity using orbiting satellites. In this way, Agner was able to study changes in the gravitational field and also measure the rotation speed of our planet.

Thus he discovered that the ice melting causes a change in the speed of rotation: the melting of ice in Greenland and Antarctica causes a change in the mass of water and the speed of rotation.Ecoportal.net

With information of: https://www.huffingtonpost.es/