Galactic cosmic rays and our world.

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Discussion Overview

The discussion centers around the potential connections between galactic cosmic rays and various phenomena, including cloud formation, changes in cloud-forming bacteria, and their effects on marine life, particularly red tide algae. Participants explore historical theories and recent studies related to these topics.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant inquires about studies since 2004 linking galactic cosmic rays to cloud formation and marine life, particularly red tide algae.
  • Another participant expresses skepticism about the relevance of ATIC results to cloud formation and marine life effects.
  • A different participant provides a detailed explanation of red tide, emphasizing that it is a natural phenomenon influenced by environmental conditions rather than cosmic rays.
  • This participant also suggests that recent theories claiming a strong link between clouds and cosmic radiation may be incorrect, proposing instead that any connection could be weak or nonexistent.
  • A later post references a theory suggesting that galactic cosmic rays may have influenced oceanic bacteria and algae millions of years ago, questioning if similar effects could occur today from high-energy electrons from nearby sources.

Areas of Agreement / Disagreement

Participants exhibit disagreement regarding the influence of galactic cosmic rays on cloud formation and red tide phenomena. Some argue against a significant connection, while others propose historical theories that suggest potential effects.

Contextual Notes

Participants reference various studies and theories without reaching a consensus on the current relevance or accuracy of these claims. The discussion includes assumptions about environmental conditions and the nature of cosmic rays that remain unresolved.

Heneni
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Recently on nasa's site:

http://science.nasa.gov/headlines/y2008/19nov_cosmicrays.htm


My question is...has there been any studies since 2004 to show the link between galactic cosmic rays, and cloud formation, and/or changes in cloud forming bacteria and/or the effect these have on the marine life especially red tide algae?

Can you point me in any direction?

Heneni
 
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I don't think the ATIC results have anything to do with cloud formation, and/or changes in cloud forming bacteria and/or the effect these have on the marine life especially red tide algae.
 
What causes red tide?

Red tide is a natural phenomenon not caused by human beings. When temperature, salinity, and nutrients reach certain levels, a massive increase in Karenia brevis algae occurs. No one knows the exact combination of factors that causes red tide, but some experts believe high temperatures combined with a lack of wind and rainfall are usually at the root of red tide blooms. There are no known ways that humans can control it, but many scientists around the world are studying red tide at present. It's important to remember that red tide has happened before and the Texas marine environment has always recovered.

How, when and where do red tide blooms start?

Texas red tides have occurred from August through February. They typically begin in the Gulf of Mexico. Currents and winds then transport blooms toward shore. The blooms mainly come up along Gulf beaches, and less frequently into bays and estuaries.

. . . .
http://www.tpwd.state.tx.us/landwater/water/environconcerns/hab/redtide/faq.phtml

Where and when red tides occur
Red tide can occur any time during the boating season if weather conditions are right. Dry sunny spells followed by a sudden storm can encourage Alexandrium to multiply, and physical conditions such as winds, tides, and currents can act to contain and concentrate the organisms in one place.

When billions of organisms are present, they may tint the water. A red tide may suddenly appear in localized patches or longshore streamers. A few days or weeks later, the red color disappears. However, it should be noted that water discoloration does not necessarily accompany the presence of toxic phytoplankton blooms. This has been especially true in the Gulf of Maine and off Canada. Some red tide organisms emit a bluish green bioluminescent light that can make the waves glow at night.
http://seagrant.gso.uri.edu/factsheets/redtide.html

It appears more to do with water temperature, water chemistry and nutrients rather than cosmic rays.

I believe that recent theories claiming a strong link between clouds and cosmic radiation have been shown to be incorrect. Perhaps there is a weak link or none at all.
 
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I probably put this in the wrong place. :wink: Feel free to move it.

In the article below...it shows that galactic cosmic rays affected our planet before...or this is the theory. It affected the bacteria and algae in the oceans millions of years ago. What I am wondering is if these high energy electrons from a nearby source wouldn't have the same effect as on oceans like it had then.

http://www.space.com/scienceastronomy/061127_milkyway_life.html


Heneni
 

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