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Politics : View from the Center and Left -- Ignore unavailable to you. Want to Upgrade?


To: Sam who wrote (188298)5/4/2012 11:35:15 PM
From: Wharf Rat  Respond to of 541955
 
The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff. – Carl Sagan

Watts is missing a few stars..

Astrological climatology? Really? I'd say "You can't make this stuff up", but obviously, they just did.
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A detailed look at galactic cosmic rays Posted on 27 September 2010 by dana1981
Henrik Svensmark has proposed that galactic cosmic rays (GCRs) could exert significant influence over global temperatures ( Svensmark 1998). The theory goes that the solar magnetic field deflects GCRs, which are capable of seeding cloud formation on Earth. So if the solar magnetic field were to increase, fewer GCRs would reach Earth, seeding fewer low-level clouds, which are strongly reflective. Thus an increased solar magnetic field can indirectly decrease the Earth's albedo (reflectivity), causing the planet to warm. Therefore, in order for this theory to be plausible, all four of the following requirements must be true.


  1. Solar magnetic field must have a long-term positive trend.

  2. Galactic cosmic ray flux on Earth must have a long-term negative trend.

  3. Cosmic rays must successfully seed low-level clouds.

  4. Low-level cloud cover must have a long-term negative trend.
Fortunately we have empirical observations against which we can test these requirements....

In summary, studies have shown that GCRs exert a minor influence over low-level cloud cover, solar magnetic field has not increased in recent decades, nor has GCR flux on Earth decreased. In fact, if GCRs did have a significant impact on global temperatures, they would have had a cooling effect over the past 20 years.

skepticalscience.com