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Watching the sun circle the pole

Discussion in 'Environmental Discussion' started by bwilson4web, Jul 30, 2013.

  1. bwilson4web

    bwilson4web BMW i3 and Model 3

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    The time lapse shows the sun circling the pole . . . something I've read about but never seen before.

    Bob Wilson
     
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  2. AzWxGuy

    AzWxGuy Weather Guy

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    I have seen this phenomena twice during the two 6-month stints I've spent at McMurdo Station Antarctica. Basically, if you are at a latitude higher than 66 degrees North or South the sun becomes circumpolar during the summer in the north and during the northern hemisphere winter in the south. The further north or south you are, the longer the period of uninterrupted sunlight. More info here
     
  3. mojo

    mojo Senior Member

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    Ive heard that the effect of albedo loss at the poles is exaggerated.
    If the sun is low on the horizon ,much light caroms off the surface of water.
     
  4. AzWxGuy

    AzWxGuy Weather Guy

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    Exaggerated in a modeling sense? I know they have to tweak various values to get the global heat budget to work in climate models. But yes, angle of incidence is everything.
     
  5. tochatihu

    tochatihu Senior Member

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    Reflectivity as measured from satellites

    Albedo

    provide albedo and angle of incidence information. So this is surely not a case where climate models are missing some obvious detail that 'somebody has heard ...'

    Some might know the name of Steve Squyres? Slightly famous for managing two Martian Rovers? He published on this stuff in 1982. Falls pretty well in the category of 'known and understood'.

    The title of the thread reminds me that some evidence exists that the Earth circles the Sun. Not the other way around.
     
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  6. mojo

    mojo Senior Member

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    "Albedo change in the Arctic threatens to cause runaway global warming"
    Arctic News: Albedo change in the Arctic threatens to cause runaway global warming

    Were all gonna die due to lack of albedo causing catastrophe!!!

    2012 had low Arctic albedo.
    But 2013 Artic ice is rapidly gaining volume.
    Albedo loss isnt causing the end of the world.
    Albedo loss is having negligible effect on increasing ice volume or lower sea surface temps .
    Run Run Run RunAway.
     
  7. mojo

    mojo Senior Member

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    BTW Arctic ice volume is gaining rapidly , in spite of continually rising CO2 levels and loss of albedo.
    Strange gas that causes ice loss and now ,ice gain.
    CO2 also causes record high levels of Antarctic ice presently .
     
  8. bwilson4web

    bwilson4web BMW i3 and Model 3

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    What a silly thing to claim:
    [​IMG]
    Oh I see. You think we need to wait until the end of August, fool.

    Bob Wilson
     
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  9. mojo

    mojo Senior Member

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    Its an increase of ice from 2012 .
    While Co2 is continually rising and albedo is lowered..
    Explain how CO2 causes this?

    Whos the FOOL?
     
  10. mojo

    mojo Senior Member

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    BTW dont call me a fool.
    Unless you have something intelligent to add.
    Which is unlikely,judging from your previous posts.

     
  11. mojo

    mojo Senior Member

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    For that matter explain how the Antarctic is at record high ice volume with record high CO2?
    If you cant explain that ,then you are obviously the "fool"
     
  12. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Have your way:
    You're the liar:
    [​IMG]

    Your choice, liar.

    Bob Wilson
     
  13. mojo

    mojo Senior Member

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    OMG Im debating a mentally impaired person .
    Touche, you win the special debate award.
     
  14. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Works for me:
    [​IMG]
    The Arctic ice is thinner and no lie you post changes that observation. It is running thinner than the average and only last year did it set records for the thinnest. Soon enough, it will bust that record, if not this year in another. You're toast, son.

    Bob Wilson
     
  15. icarus

    icarus Senior Member

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    So Mojo, do you have any citation for your claim that Arctic (and
    antarctic) ice is increasing?

    Even your own provided link re: Albedo seems to confirm the opposite!

    Icarus
     
  16. AzWxGuy

    AzWxGuy Weather Guy

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    Goodness, this is dangerous "flaming" ground to be walking upon ... Quick, back to my Gen II forum ...
     
  17. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Relax, we have one gadfly. Credible posts by credible folks are always welcome.

    One tell is that serious folks still take correction such as my recent education about wind shear at lower levels. I was aware of jetstream effects but hadn't really considered lower level, wind shear and learned that NOAA has quantitative numbers that combine the independent variables to calculate a risk-factor for tornado formation. Fascinating stuff.

    Bob Wilson
     
  18. mojo

    mojo Senior Member

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  19. icarus

    icarus Senior Member

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    Mojo,

    I have read (and scanned) through dozens of page from the National snow and ice data center site you note, and NOWHERE can I find a chart that looks Ike yours! Either you have done some pretty thourough cherry picking, or you have been hoodwinked by a made to look alike, or you are attempting to make it up.

    What I IDID find on the site, was overwhelming evidence of the trend to lower summer ice levels in the Arctic.

    On a side note, listening to CBC the other day, I heard a story about a record number of ships making trans arctic passage this season, primarily using the N.E Passage over Russia.

    Icarus
     
  20. bwilson4web

    bwilson4web BMW i3 and Model 3

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    LOL! He simply changes to Antarctic ice cover as if we might not notice.

    If I remember correctly, there is a satellite mission that makes an inventory of the global ice cover including Greenland. I don't remember the name but I'm sure Mr. Google does.

    Bob Wilson