Re: Arctic Ice

On 7 Sep, 23:17, Alan White <alan.les...@xxxxxxxxxxxxx> wrote:
On Fri, 07 Sep 2007 14:00:52 -0700, Alastair

<a...@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
Yes, but I wrote Equator not Tropic of Cancer. In fact at the
solstice the radiation at the pole is at its maximum and at the
equator it is at its minimum. All the rest of the year the equator
receives more daily radiation than the North Pole. It does mean that
in general, during June, we here in Britain are getting more solar
radiation per day that they do at the Equator.

At the Summer Solstice the sun is overhead at the Tropic of Cancer,
hence my use of that tropic as the reference for solar radiation at the
Pole. I don't disagree that at the solstice the radiation at the Pole is
at it's maximum but the radiation per unit area is still only about 38%
of that at the T.of C.

At the solstice, the radiation per unit area at the Equator is 92% of
that at the T.of C.

At the solstice the radiation per unit area at latitude 52°N is about
88% of that at the T.of C.

So, per unit area, at the solstice the UK is getting about 4% less solar
radiation than that at the Equator and at the Pole about 54% less than
at the Equator.

Integrating those figures over a day, which would have to allow for the
changing elevation of the Sun, is beyond my powers at this time of
night.

Perhaps Tudor...?

--
Alan White
Mozilla Firefox and Forte Agent.
Twenty-eight miles NW of Glasgow, overlooking Lochs Long and Goil in Argyll, Scotland.
Webcam and weather:-http://windycroft.gt-britain.co.uk/weather

You have not include day length in your calculations, and at the pole
the sun remains at the same elevation (23 degs) all day.

I am not discussing solar intensity. I am comparing the total energy
received over 24 hours which is constant at the pole but only lasts
for less than twelve hours at the equator. In the UK, the day can
last for almost 24 hours in the Shetlands Isles. One of the records
for sunshine is held by Tiree, which is at about the same latitude as
you!


.

Relevant Pages

  • Re: Arctic Ice
    ... All the rest of the year the equator ... receives more daily radiation than the North Pole. ... At the Summer Solstice the sun is overhead at the Tropic of Cancer, ...
    (uk.sci.weather)
  • Re: OT: Global Warming
    ... This will affect plant and animal life adversely. ... Almost no radiation makes it to the ground, ... Without a magnetosphere, the huge protons ... associated with pole reversal but IIRC there were some deleterious effects. ...
    (rec.arts.mystery)
  • Re: Another "Pole Shift" Chicken Little surfaces
    ... The pole shift thread was started obviously as a joke by ... some inane idiot named Wally. ... The Earth's magnetic field ... >>main danger would be from increased radiation from solar wind. ...
    (sci.astro)
  • Re: Another "Pole Shift" Chicken Little surfaces
    ... There is no interest here in researching or discussing a polar shift. ... >>that the North Pole will be changed into the South Pole. ... The Earth's magnetic field ... > main danger would be from increased radiation from solar wind. ...
    (sci.astro)
  • Re: Another "Pole Shift" Chicken Little surfaces
    ... > "2012 the next polar reversal will take place on earth. ... > that the North Pole will be changed into the South Pole. ... main danger would be from increased radiation from solar wind. ... For instance if a north pole formed over New York City, ...
    (sci.astro)