Rigby5
Diamond Member
Rigby5 writes,
"Jet streams are caused and powered by heat. So more global warming means stronger and more frequent jet streams"
This is a hilarious statement since it is the temperature DIFFERENCE between two air masses what drives Jet Streams.
From Weather Questions,
"What causes the jet stream?
A jet stream forms high in the upper troposphere between two air masses of very different temperature. The greater the temperature difference between the air masses, the faster the wind blows in the jet stream."
Jet Streams were powerful during global Cooling of the 1960's and 70's too.
No, if you have two areas of atmosphere of -250 degrees and -200 degrees, you will not have as energetic of a reaction as you would between areas of +200 degrees and +250 degree.
The colder a gas is, the less volume, so then there is less pressure causing movement.
Its called Charles' Law.
Oh my gawad, what a stupid statement since it doesn't matter what the temperature is, it is the DIFFERENCE between the two that matters.
Here is another source, from the NOAA:
The Jet Stream
"In addition, with the three-cell circulations mentioned previously, the regions around 30° N/S and 50°-60° N/S are areas where temperature changes are the greatest. As the difference in temperature increases between the two locations the strength of the wind increases. Therefore, the regions around 30° N/S and 50°-60° N/S are also regions where the wind, in the upper atmosphere, is the strongest."
Here it is again, "As the difference in temperature increases between the two locations the strength of the wind increases"
You can quote something that is incomplete all you want, it does not make it complete.
Sure convection is movement from heat rising above cold, but the more heat, the more energy, and the faster and further the movement.
Just take a blown up balloon and put it in the freezer and you will see what I mean.
When you get it cold, there is less energy and it shrinks because there is less pressure inside.
Does not matter what the temperature difference is in that case.
It is just a question of total energy.
You really are going to fight the NOAA on this who specifically states. "In addition, with the three-cell circulations mentioned previously, the regions around 30° N/S and 50°-60° N/S are areas where temperature changes are the greatest. As the difference in temperature increases between the two locations the strength of the wind increases. Therefore, the regions around 30° N/S and 50°-60° N/S are also regions where the wind, in the upper atmosphere, is the strongest"
bolding mine
As the difference in temperature increases between the two locations the strength of the wind increases
As clearly pointed out that it is the DIFFERENCE between TWO locations determines the strength of the wind The greater the difference, greater is the wind strength
You ignored the other source as well saying the same thing that the NOAA stated:
"What causes the jet stream?
A jet stream forms high in the upper troposphere between two air masses of very different temperature. The greater the temperature difference between the air masses, the faster the wind blows in the jet stream."
Between two air masses, the greater the temperature difference, greater the wind speed.
Stop making a fool of yourself.
Wrong.
You are misunderstanding what they are leaving out as being assumed.
And clearly climate change is a very slow process, normally having no noticeable effect on weather.
It is only after decades that the slow progression of climate changes has noticeable effect on weather.
The reality is that with a colder climate, weather is less energized.
With a hotter climate, weather is more energized.
That should be obvious because if both the high and low pairs were near absolute zero, the media would be solid or liquid, not gaseous, and there would be very little convection, if any at all. So then clearly convection, the basis for jet streams, is TOTALLY and completely dependent upon heat for energy. If you chill both the high and low temperature zones in the convection pair, you get less movement. If you heat both, you get more movement.
When NOAA does not bother mentioning the obvious, that does not mean it is not true. They just assume the reader knows something about the subject already.