Re: New study on wind energy

In article <j0qbs2$a6$1@xxxxxxxxxxxxxx>, M.A. Stewart wrote:
Don Klipstein (Don@xxxxxxxxxxxxxxxx) writes:
In article <j0ihob$f1m$1@xxxxxxxxxxxxxx>, M.A. Stewart wrote:

<SNIP to angle of incidence stuff>

Have you heard of 'Angle Of Incident' re the sun? That's one reason why
the pole areas are colder on Earth... and Mars.

Look at the global insolation (year-round long-term average solar
irradiance) maps in the Wikipedia article on insolation.

Wikipedia?? Are you kidding me?

Though the poles get much less than the equator and tropical areas do,
it's still significant. Also, the polar and subpolar areas (especially
the Arctic and near-Arctic when Antarctica has stable ice coverage) are
where the ice albedo / surface albedo positive feedback is most
significant.

Hmmmm.... what if it's overcast in the Arctic? It does get overcast there
you know. Especially so in the summertime, much more than in the winter
time "when the sun just don't [sic] shine!".

You attempt to discount "angle of incidence of the sun" and it's effect
(NOBODY GOT THAT IT WAS THE WRONG WORD, WHICH I PUT IN ON PURPOSE!!) in the
arctic. It's more than the less energy (less per square foot, metre etc.)
penetrating the arctic sea as a function of the lesser angle of the sun in
the sky, it's also because less energy reaches the surface (to penetrate),
because it travels through more atmosphere than if the sun was bolt
upright 90 Deg. at the equator on March 21st noonish.

Don't like Wikipedia? How about...

http://www.solar-facts.com/world-solar/world-insolation.php

There is also
another negative at work. Reflection of energy off of the surface of the
water. The lower the sun is in the sky, there is more energy reflection
off the surface of the water, hence less energy penetrating the water.

90 degrees - about 3% reflected

20 degrees - about 11% reflected

It's like one, two, three, strikes... all working together to make the "Oh
my God... if the arctic ice melts at the north shore of Baffin Island, it
will turn as hot as the Caribbean Sea!... Oh my God!" a leading bogus
concept.

--
- Don Klipstein (don@xxxxxxxxxxxxxxxx)
.

Relevant Pages

  • The Failure of Poor Concepts in Discussing Thin Layer Reflections
    ... and the reflection coefficient both of which are then ... expressed in the energy equation. ... It follows that at the second boundary there is less power available ... noon day sun, on the equator, at either equinox, we could compare it ...
    (rec.radio.amateur.antenna)
  • Re: RF and the ionosphere
    ... > ionosphre if the angle was accute enough. ... > including effects of reflected/scattered RF energy that may reach the ... > ionosphere at an angle different from the primary RF energy, ... > discussion concerning ray reflection and may help (it's a PDF ...
    (rec.radio.shortwave)
  • Re: Wheres weirdo?
    ... All the photons, P2, are reflected. ... We are given that angle of incidence = angle of reflection, ... Then they cannot leave at the energy you imply. ...
    (talk.origins)
  • Re: RF and the ionosphere
    ... >> ionosphre if the angle was accute enough. ... >> ionosphere even at the MUF? ... >> including effects of reflected/scattered RF energy that may reach the ... >> discussion concerning ray reflection and may help (it's a PDF ...
    (rec.radio.shortwave)
  • RF and the ionosphere
    ... ionosphre if the angle was accute enough. ... including effects of reflected/scattered RF energy that may reach the ... ionosphere at an angle different from the primary RF energy, ... discussion concerning ray reflection and may help (it's a PDF ...
    (rec.radio.shortwave)