Climate change is slowing the Earth’s rotation, but not enough. Waiting for a second to count down

Climate change is slowing the Earth’s rotation, but not enough. Waiting for a second to count down
Climate change is slowing the Earth’s rotation, but not enough. Waiting for a second to count down

From the point of view of an ordinary hunter, who encounters a time delay while walking on daylight saving time, one second may seem like a leap. Only while the change in the change is artificial, the fall of one second is forced by the change in the speed of the Earth’s rotation. Now it would be the first time, so far the seconds have only been asking.

Accurate and correct time affects a number of systems, such as satellite navigation or global satellite navigation. For example, GPS satellites must know exactly where the Earth is located below them and what the exact time is so that navigation can work correctly. This is also why the International Earth Rotation Service (IERS) operates, which monitors changes in the Earth’s rotation.

If we had to sum up the whole problem in one sentence, then it would be that the polar ice sheet helps to slow down the Earth’s rotation by limiting the accelerator, which, among other things, also causes the planet’s core to flow. The earth is forced to accelerate a hundred times more, and even a massive glacier can’t slow it down enough, and in the end it gets a little faster. By the way, this pressure also causes the Earth to become round due to the lifting of landmasses on the plate.

Where with a second

First, the rotation of the Earth was related to the level of time, i.e. hours, minutes and seconds within the standard known as Greenwich mean time (GMT). Now the atomic clock is used for its song and it is known as Coordinated Universal Time, known by the abbreviation UTC. In the literal sense of the word, we think that, like sundials, there are atomic clocks, for which a second is defined as 9,192,631,770 oscillations of a cesium atom. The key is to ensure that the atomic axis is perfectly synchronized with the astronomical axis.

However, until now the slightly slower rotation of the Earth meant that you had to synchronize both times with the help of a leap second. Until that time, scientists had to deal with the problem of adding one second to GMT from the hour (since 1972, it was those plates). According to a study published in the journal Nature, however, at first it will appear that one second will have to go away. Duncan Agnew from the Scripps Oceanographic State, together with other scientists, describes a remarkable acceleration of the earth’s rotation, which means a departure from its gradual deceleration observed for millennia.

It is an unprecedented situation and a big problem. It’s not a huge change in the Earth’s rotation that would lead to any catastrophes or the like, but it’s something remarkable. It is another sign that we are in very unusual times, he said according to the TechTimes server Agnew.

According to ABCNews, however, there is still debate about the meaning of the split second. While some scientists advocate its introduction as a reaction to the decreasing dynamics of the Earth, others remain skeptical and refer to the uncertainty inherent in long-term predictions. It is assumed that the Earth’s rotation will exhibit unpredictable fluctuations, which creates the need for more flexible time standards.

The article is in Czech

Tags: Climate change slowing Earths rotation Waiting count


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