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Cosmic Rays Affecting Cloud Formation?

04/06/2024 11:17 AM

Here is a link to articles claiming that cosmic rays can affect cloud formation,and consequently,temperature on Earth.

https://physicsworld.com/a/physicists-claim-further-evidence-of-link-between-cosmic-rays-and-cloud-formation/#:~:text=The%20idea%20is%20that%20cosmic%20rays%20seed%20clouds,by%20reflecting%20incoming%20sunshine%20back%20out%20to%20space.

This brings a question to my mind:Does the galaxy have seasons that can affect our climate?It would be such long seasons that we could not readily observe them unless there was a way to detect them from fossils or geological formations.

Could there be currently unknown effects on animals,including humans that would affect their behavior?

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#1

Re: Cosmic Rays Affecting Cloud Formation?

04/08/2024 7:57 AM

<...Could there be currently unknown effects on animals,including humans that would affect their behavior?...>

There are plenty of known effects. <...Cosmic Rays Affecting Cloud Formation...> affects cloud cover, which affects weather. The <animals,including humans...> are sensitive to temperature, the variation in sunlight, and the effects of precipitation or lack of it. Precipitation affects river drainage, flooding, crop production and food availability/distribution, which affects health and breeding activity.

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#2
In reply to #1

Re: Cosmic Rays Affecting Cloud Formation?

04/08/2024 8:48 AM

Those are known effects.There may be more of which we are not aware,yet may discover in the future.They may be such a long cycle,cosmic wise,we may never survive as a species long enough to know.Everything seems to run in cycles,why should our Milky Way be different.It could have weather cycles also.There are many things that exist now that we take for granted that were never even dreamed of 200 years ago.The ancients knew the effects of wind,but did not know the cause of them.

It may be trillions of years for each season.We will never again be in this exact spot in the galaxy or universe.

Galactic weather may even influence the intelligence and personality of all animals,including humans.There has been plenty of time for intelligent beings to develop on Earth and there may be even have been a species that could leave Earth and conquer time and the speed of light.Some UFO's may be previous civilizations with occupants on a tour guide of our times,looking at us as we look at zoo animals.We are a confined species at this time,and the cage is composed by our lack of knowledge and surplus of ego.

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#5
In reply to #2

Re: Cosmic Rays Affecting Cloud Formation?

04/08/2024 3:55 PM

<...It may be trillions of years for each season...>

Good luck in finding a previously-unknown pattern in that!

Invitation declined; try asking the <...we...> instead.

<unsubscribes>

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#11
In reply to #5

Re: Cosmic Rays Affecting Cloud Formation?

04/17/2024 8:42 AM

I think I stated or implied that we will never know the long term effects because we will never be in the same relative space in the galaxy or universe

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#3

Re: Cosmic Rays Affecting Cloud Formation?

04/08/2024 1:04 PM

Does the galaxy have seasons that can affect our climate?

Any star that orbits the center of gravity of the galaxy that is not permanently in the galactic plane would have to pass through the galactic plane twice per revolution. At one time it was thought that moving through the spiral arms would result in a higher amount of cosmic rays and this could be correlated to the apparent 140 Myr cycle of ice ages.

According to this, the latest information about our galaxy doesn't fit this correlation.

"Earth’s climate has changed over time, but the cause for the changes has been hotly debated. One idea (Shaviv and Veizer,2003), suggested that perhaps two-thirds to three-fourths of the variance in Earth’s temperature over the past 500 million years may be attributable to when our solar system passes through the spiral arms of the Milky Way galaxy. The evidence seemed to fit: there appears to be a 140 million year cycle of global climate change, and that correlates when our solar system seems to move between spiral arms, too. Or at least it used to. Since 2003 we have revised our map of the galaxy, which changes the estimation of when Earth transits through the spiral arms.

“Although previous work found a correlation between the 140 Myr climate cycle on Earth and the intersection with spiral arms,” write researchers Adrian Melott, Andrew Overholt, and Martin Pohl, “with new data on the structure of the galaxy, this correlation disappears.”
On Earth, the 140 million year cycle is estimated from the timing of ice ages and abundances of fossils.

The basic idea of the earlier research was that when the solar system journeys through the Milky Way’s spiral arms the event rate of cosmic rays in the Earth’s atmosphere greatly increases, since the number of supernovae in spiral arms is clearly much larger than in between the arms. This could affect cloud formation on Earth and therefore strength of greenhouse effect.

But that assumed the Milky Way had four arms, and was less massive than new calculations show. In 2008, new information from the Spitzer Space Telescope helped astronomers conclude that the Milky Way consisted of two spiral arms and a large central bar. Additionally, in 2009 Spitzer data helped scientists conclude that our galaxy is much more massive than originally thought, and is moving faster than originally estimated."

https://www.universetoday.com/33538/past-climate-change-cannot-be-tied-to-earth-passing-through-galactic-plane/

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#4
In reply to #3

Re: Cosmic Rays Affecting Cloud Formation?

04/08/2024 1:44 PM

How about our galaxy's movement through space,and the unknown effects of the extra-galactic changes?

There are many sources of cosmic rays that are unknown.

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#10
In reply to #4

Re: Cosmic Rays Affecting Cloud Formation?

04/09/2024 7:52 PM

How about our galaxy's movement through space,and the unknown effects of the extra-galactic changes?

I'm thinking that any cause-and-effect search has to be done using the periodicity of climate data and correlating that to some natural period such as the orbital period of the sun around the galactic center. I don't know that there are any periodicities linked to the galactic movement among the other galaxies in our neighborhood.

The Fourier Transform is the mathematical tool used to search the climate data for periodicities (effects) and associating peaks with known periods of possible drivers (causes) such as Milankovitch cycles.

https://math.ucr.edu/home/baez/glacial/glacial.pdf

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#6

Re: Cosmic Rays Affecting Cloud Formation?

04/08/2024 4:24 PM

There are millions and millions of sources for cosmic rays, as such I would think that the overall effect is a homogenous mix, however random events could increase the quantity from time to time...as for seasonal influence one might equate the 11 year sunspot activity to an increase in cosmic radiation....

https://news.uchicago.edu/explainer/what-are-cosmic-rays

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#7
In reply to #6

Re: Cosmic Rays Affecting Cloud Formation?

04/09/2024 4:04 AM

I think also the angle of exposure of the Earth to the Sun can also make a big difference, as the poles are not as protected from radiation because of the thin ozone layer that seems to exist there...

...." Sunspots increase and decrease through an average cycle of 11 years. Dating back to 1749, we have experienced 23 full solar cycles where the number of sunspots have gone from a minimum, to a maximum and back to the next minimum, through approximate 11 year cycles. We are now well into the 24th cycle.

This chart from the NASA/Marshall Space Flight Center shows the sunspot number prediction for solar cycle 24. The NASA/Marshall Space Flight Center also shows the monthly averaged sunspot numbers based on the International Sunspot Number of all solar cycles dating back to 1750. (Daily observations of sunspots began in 1749 at the Zurich, Switzerland observatory.)

One interesting aspect of solar cycles is that the sun went through a period of near zero sunspot activity from about 1645 to 1715.

This period of sunspot minima is called the Maunder Minimum. The "Little Ice Age" occurred over parts of Earth during the Maunder Minimum.

So how much does the solar output affect Earth's climate? There is debate within the scientific community how much solar activity can, or does affect Earth's climate.

There is research which shows evidence that Earth's climate is sensitive to very weak changes in the Sun's energy output over time frames of 10s and 100s of years.

Times of maximum sunspot activity are associated with a very slight increase in the energy output from the sun.

Ultraviolet radiation increases dramatically during high sunspot activity, which can have a large effect on the Earth's atmosphere.

The converse is true during minimum sunspot activity. But trying to filter the influence of the Sun's energy output and its effect on our climate with the "noise" created by a complex interaction between our atmosphere, land and oceans can be difficult.

For example, there is research which shows that the Maunder Minimum not only occurred during a time with a decided lack of sunspot activity, but also coincided with a multi-decade episode of large volcanic eruptions.

Large volcanic eruptions are known to hinder incoming solar radiation. Finally, there is also evidence that some of the major ice ages Earth has experienced were caused by Earth being deviated from its average 23.5 degree tilt on its axis. Indeed Earth has tilted anywhere from near 22 degrees to 24.5 degrees on its axis.

But overall when examining Earth on a global scale, and over long periods of time, it is certain that the solar energy output does have an affect on Earth's climate. However there will always be a question to the degree of affect due to terrestrial and oceanic interactions on Earth."...

https://www.weather.gov/fsd/sunspots

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#8
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Re: Cosmic Rays Affecting Cloud Formation?

04/09/2024 8:08 AM

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#9
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Re: Cosmic Rays Affecting Cloud Formation?

04/09/2024 11:39 AM
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