ACE Norway 2015 - The Earth's Orbit

E23ea2b82db9fc04e4c8161cdaf099a1?s=47 Robert Simpson
February 13, 2015

ACE Norway 2015 - The Earth's Orbit

E23ea2b82db9fc04e4c8161cdaf099a1?s=128

Robert Simpson

February 13, 2015
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Transcript

  1. E A R T H ’ S O R B

    I T R O B E R T S I M P S O N
  2. S O M E N O T E S B

    U T F I R S T
  3. S O M E G O O D N E

    W S • Wine with dinner tonight thanks to Hurtigruten • Walking tours in Hammerfest and Tromsø thanks to Karin • but… on Sunday we need to have dinner at 4pm not 7:30pm
  4. A U R O R A S A FA R

    I - S U N D AY N I G H T • Pick up at 6:15pm on Sunday evening from Radisson Blu • ACE have arranged for us to have ur own coach and guide • Basecamps with wood fires, hot drinks, snacks • Tripods, advice on cameras • Only restriction is a 100-200m walk from coach to base camp • Dress up warm, but with layers (warm at basecamp) 84% success rate
  5. E A R T H ’ S O R B

    I T R O B E R T S I M P S O N
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  8. S I M P L E M O D E

    L
  9. O N T H E M O V E •

    100,000 kph (62,000 mph) • 365.24219 days • 940 million km (584 million miles)
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  11. T O P V I E W

  12. T O P V I E W

  13. N S S I D E V I E W

  14. S S S S N N N N W I

    N T E R S U M M E R S P R I N G A U T U M N S E A S O N S
  15. S S S S N N N N S O

    L S T I C E S O L S T I C E E Q U I N O X E Q U I N O X
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  19. I M A G E : W I K I

    M E D I A C O M M O N S ( TA U ʻ O L U N G A )
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  21. I M A G E : W I K I

    M E D I A C O M M O N S ( TA U ʻ O L U N G A )
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  23. I M A G E : W I K I

    M E D I A C O M M O N S ( TA U ʻ O L U N G A )
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  25. I M A G E : W I K I

    M E D I A C O M M O N S ( YA N Z H A N G )
  26. T H E E A R T H S P

    I N S R O L L I N G , R O L L I N G , R O L L I N G
  27. T H E E A R T H S P

    I N S R O L L I N G , R O L L I N G , R O L L I N G
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  39. G O R E Y H A R B O

    U R , J E R S E Y; W I K I M E D I A C O M M O N S ( F O X Y O R A N G E )
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  55. C H E LYA B I N S K M

    E T E O R F E B R U A RY 2 0 1 3
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  62. M I L A N K O V I T

    C H C Y C L E S • Cycle in perihelion (precession of our orbit)
  63. W I N T E R S U M M

    E R S P R I N G A U T U M N 4 1 , 0 0 0 Y E A R S
  64. W I N T E R S U M M

    E R S P R I N G A U T U M N 4 1 , 0 0 0 Y E A R S
  65. M I L A N K O V I T

    C H C Y C L E S • Cycle in perihelion (precession of our orbit) • Axial precession about our axis; like a wobbling spinning-top
  66. 2 3 , 0 0 0 Y E A R

    S
  67. 2 3 , 0 0 0 Y E A R

    S
  68. 2 3 , 0 0 0 Y E A R

    S
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  71. M I L A N K O V I T

    C H C Y C L E S • Cycle in perihelion (precession of our orbit) • Axial precession about our axis; like a wobbling spinning-top • Shape of our orbit becomes more and less elliptical.
  72. W I N T E R S U M M

    E R S P R I N G A U T U M N 1 0 0 , 0 0 0 Y E A R S
  73. W I N T E R S U M M

    E R S P R I N G A U T U M N 1 0 0 , 0 0 0 Y E A R S
  74. M I L A N K O V I T

    C H C Y C L E S • Cycle in perihelion (precession of our orbit) • Axial precession about our axis; like a wobbling spinning-top • Shape of our orbit becomes more and less elliptical. • We are half way through these cycles
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  80. S U M M A RY • Earth is tilted

    as it spins, this creates our seasons • The Earth’s spin creates huge speed differentials, and the Coriolis effect • The Earth’s spin, and the gravity of the Moon and Sun contribute to tides • Our orbit takes us into the path of other orbiting bodies • Periodic changes in our spin, tilt and orbit affect the global temperature
  81. H T T P : / / W W W.

    G I . A L A S K A . E D U / A U R O R A F O R E C A S T / E U R O P E / “Auroral activity will be moderate. Weather permitting, moderate displays will be visible overhead in Tromsø, Norway and Reykjavik, Iceland…”
  82. TA C T I C S • After dinner, go

    get ready to go outside. • Take your things to the bar or cafe. • Go and check once in a while to see if whether is clear. (I will do this too) • If it is, stay outside for a bit. Give it time. • Tell someone if you can see them. Share the news!
  83. TA C T I C S • Get away from

    ships lights, become dark adapted. • Don’t give up. • Come inside when your cold, and go back out in a bit. • Have a nap now if it will help.