How high does a mountain need to be before it misses a sunset?

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gareth jones

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gareth jones  asked the Naked Scientists:
Geoid and the earths' nutation in obliquity
How high would Ben Nevis need to be to have a  night in June when the sun would not  set at the summit?
By how much would this change over a cycle of the earths' nutation in obliquity?(amplitude  - 9.2'' of lattitude)
By how much does the amount of insolation intercepted by the whole  oblate earth vary with changes in obiquity( ~ 2 degrees)? (rotating a marble does not change the size of its shadow but a 'chocolate button' changes its shape when tilted)
Might these energy changes be large enough to influence El Nino etc?
Thanks for great podcasts

Gareth Jones

What do you think?
« Last Edit: 17/06/2010 11:30:02 by _system »