
It looks as if the solar radiance oscillates much faster than the earth's rotation. Oh well..back to the drawing board.

In other words - we could do with another 50 years of data
Thus, the Earth (specifically the mantle), the rotation is accelerated or slowed according to the fluctuations of cosmic rays under the influence of solar activity through the zonal winds, provide a wonderful device integration variations in atmospheric angular momentum and zonal wind circulation that it is difficult to measure directly.
The longer patterns in changes of the length of the day can last for decades. "These are caused by processes within Earth's core," says Gross. "The core is a fluid. Its motion generates Earth's magnetic field. Changes in its motion can change the rotation of solid Earth. Observing the magnetic field at the surface gives us an idea of how fluid is moving within the core. These changes in the fluid motion inferred from the magnetic field match the longer period changes we see in the length of the day."
The longer patterns in changes of the length of the day can last for decades.
"The annual changes in the length of the day," says Gross, "are caused mostly by the atmosphere -- changes in the strength and direction of the winds, especially the jet stream. The Sun warms the equator more than the poles. That temperature difference is largely responsible for the jet stream. Seasonal changes in that temperature difference cause changes in the winds and, hence, the length of the day."
solrey wrote:Thanks Alex. Way to read between the lines by "highlighting" the underlying reality.![]()
I noticed that was from 2002The longer patterns in changes of the length of the day can last for decades.
As in the 11 and/or 22 year solar cycle?![]()
And what is this all about?"The annual changes in the length of the day," says Gross, "are caused mostly by the atmosphere -- changes in the strength and direction of the winds, especially the jet stream. The Sun warms the equator more than the poles. That temperature difference is largely responsible for the jet stream. Seasonal changes in that temperature difference cause changes in the winds and, hence, the length of the day."
ElecGeekMom wrote:How about this?
When the sun is quiet, the ionosphere lowers, indicating a thinning of the atmosphere. Conversely, when the sun is active, the ionosphere elevates, indicating a thickening of the atmosphere. Wouldn't that have an impact on the speed of the earth's rotation?
I would expect some sort of lag in that mechanism.
gocrew wrote:I was recently asked by someone deeply skeptical of EU why, if Venus, Earth, Mars and Saturn were new arrivals, they had stabilized their orbits so quickly. I explained that he was thinking in terms only of gravity, and he countered that if these planets had stabilized, why had comets not stabilized into circular orbits. I confessed I did not know.
Can someone help me with this?
gocrew wrote:I was recently asked by someone deeply skeptical of EU why, if Venus, Earth, Mars and Saturn were new arrivals, they had stabilized their orbits so quickly. I explained that he was thinking in terms only of gravity, and he countered that if these planets had stabilized, why had comets not stabilized into circular orbits. I confessed I did not know.
Can someone help me with this?
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