Thanks for the moon

[lee_merrill]

As an expert, how long would you say it takes for there to be a substantial change?

I'm not an expert, but surely 10 degrees of change would produce substantial results, if 2.4 degrees of change on earth leads to ice ages.

Blessings,
Lee

[rogue06]

I'm not an expert, but surely 10 degrees of change would produce substantial results, if 2.4 degrees of change on earth leads to ice ages.

Blessings,
Lee

Does it now.

And I didn't ask you about how much of a shift, but rather how long it took for it to take place.

The answer is that we experience something like a 1 degree shift back and forth over the course of a 40,000-year cycle

[TheLurch]

I'm not an expert, but surely 10 degrees of change would produce substantial results, if 2.4 degrees of change on earth leads to ice ages.

Again, are you trying to imply that a larger wobble would produce a larger temperature change?

[lee_merrill]

And I didn't ask you about how much of a shift, but rather how long it took for it to take place.

So 10 a degree wobble in 100,000 years.

Blessings,
Lee

[lee_merrill]

Again, are you trying to imply that a larger wobble would produce a larger temperature change?

Well, that might be intuitive, but the amount of heat reaching the planet should stay the same.

Blessings,
Lee

[TheLurch]

Well, that might be intuitive, but the amount of heat reaching the planet should stay the same.

Correct, the orbital wobbles redistribute where sunlight strikes the earth, but don't change it by much. You only get large changes of climate because other processes amplify this small difference. Unless larger wobbles alter these amplifying processes, they won't have a significantly different impact on the climate.

Yet your entire argument is based on the assumption that they will - something you have absolutely no evidence for.

[lee_merrill]

Yet your entire argument is based on the assumption that they will - something you have absolutely no evidence for.

Source: NASA

Obliquity – The angle Earth’s axis of rotation is tilted as it travels around the Sun is known as obliquity. Obliquity is why Earth has seasons. Over the last million years, it has varied between 22.1 and 24.5 degrees perpendicular to Earth’s orbital plane. The greater Earth’s axial tilt angle, the more extreme our seasons are, as each hemisphere receives more solar radiation during its summer, when the hemisphere is tilted toward the Sun, and less during winter, when it is tilted away. Larger tilt angles favor periods of deglaciation (the melting and retreat of glaciers and ice sheets). These effects aren’t uniform globally -- higher latitudes receive a larger change in total solar radiation than areas closer to the equator.

Earth’s axis is currently tilted 23.4 degrees, or about half way between its extremes, and this angle is very slowly decreasing in a cycle that spans about 41,000 years. It was last at its maximum tilt about 10,700 years ago and will reach its minimum tilt about 9,800 years from now. As obliquity decreases, it gradually helps make our seasons milder, resulting in increasingly warmer winters, and cooler summers that gradually, over time, allow snow and ice at high latitudes to build up into large ice sheets. As ice cover increases, it reflects more of the Sun’s energy back into space, promoting even further cooling.

Source

© Copyright Original Source

So there seems to be plenty of reason to think that larger changes in obliquity would generate larger changes to climate.

Blessings,
Lee

[shunyadragon]

Source: NASA

Obliquity – The angle Earth’s axis of rotation is tilted as it travels around the Sun is known as obliquity. Obliquity is why Earth has seasons. Over the last million years, it has varied between 22.1 and 24.5 degrees perpendicular to Earth’s orbital plane. The greater Earth’s axial tilt angle, the more extreme our seasons are, as each hemisphere receives more solar radiation during its summer, when the hemisphere is tilted toward the Sun, and less during winter, when it is tilted away. Larger tilt angles favor periods of deglaciation (the melting and retreat of glaciers and ice sheets). These effects aren’t uniform globally -- higher latitudes receive a larger change in total solar radiation than areas closer to the equator.

Earth’s axis is currently tilted 23.4 degrees, or about half way between its extremes, and this angle is very slowly decreasing in a cycle that spans about 41,000 years. It was last at its maximum tilt about 10,700 years ago and will reach its minimum tilt about 9,800 years from now. As obliquity decreases, it gradually helps make our seasons milder, resulting in increasingly warmer winters, and cooler summers that gradually, over time, allow snow and ice at high latitudes to build up into large ice sheets. As ice cover increases, it reflects more of the Sun’s energy back into space, promoting even further cooling.

Source

© Copyright Original Source

So there seems to be plenty of reason to think that larger changes in obliquity would generate larger changes to climate.

Blessings,
Lee

So what? These are very natural causes and ranges for tilt, which given millions at least of suitable stony planets in our galaxy alone. No problem with many other earth-like planets.

[TheLurch]

So there seems to be plenty of reason to think that larger changes in obliquity would generate larger changes to climate.

Seasons ≠ climate. So no, that statement is false.

You're so careless about thinking through anything you post that it feels like roughly half of what you say is false.

[lee_merrill]

Seasons ≠ climate. So no, that statement is false.

But seasons make up the climate, warmer seasons mean warmer climate, and so on.

Blessings,
Lee

[lee_merrill]

So what? These are very natural causes and ranges for tilt, which given millions at least of suitable stony planets in our galaxy alone. No problem with many other earth-like planets.

But part of the question is "how rare is our moon?" It does seem a moon like ours is not common.

Blessings,
Lee

[tabibito]

But seasons make up the climate, warmer seasons mean warmer climate, and so on.

Blessings,
Lee

Seasons are a factor in climate. Where I live winter is cooler than summer. 600 miles east of where I live, winter is cooler than summer. In both summer and winter, temperatures here are usually a bit higher than they are there.

Now take a hypothetical planet. It's temperature averages 3 units. When its axis is tilted markedly toward its sun, Summer results in 5 units of temperature, Winter has 1 unit: the average is 3 units.
When the axis is tilted less markedly Summer results in 4 units, winter has 2. The average is still 3.

[rogue06]

But part of the question is "how rare is our moon?" It does seem a moon like ours is not common.

Blessings,
Lee

"not common"

Go back and compare that to your OP

[shunyadragon]

But part of the question is "how rare is our moon?" It does seem a moon like ours is not common.

Blessings,
Lee

Not common does not mean much when there are billions of possible candidates in our universe,

[lee_merrill]

Seasons are a factor in climate. Where I live winter is cooler than summer. 600 miles east of where I live, winter is cooler than summer. In both summer and winter, temperatures here are usually a bit higher than they are there.

Now take a hypothetical planet. It's temperature averages 3 units. When its axis is tilted markedly toward its sun, Summer results in 5 units of temperature, Winter has 1 unit: the average is 3 units.
When the axis is tilted less markedly Summer results in 4 units, winter has 2. The average is still 3.

Certainly the average can stay the same, but the variation increasing makes for a wild climate, and can make things increasingly difficult for many forms of life.

Blessings,
Lee