In article L7rhi.182$105.176@trndny08, HFguy
wrote:

Brenda Ann wrote:

"HFguy" wrote in message
news:uv1hi.10571$9b5.1632@trndny05...

Earth is closer to the Sun in Winter and further away from the Sun

in Summer.

This is true only for the northern hemisphere and it's not what causes the
seasons.



The Earth reaches perihelion - the point in its orbit closest to the Sun -
in early January, only about two weeks after the December solstice. Thus
winter begins in the northern hemisphere at about the time that the Earth
is
nearest the Sun. Is this important? Is there a reason why the times of
solstice and perihelion are so close? It turns out that the proximity of
the
two dates is a coincidence of the particular century we live in. The date
of
perihelion does not remain fixed, but, over very long periods of time,
slowly regresses (moves later) within the year. There is some evidence that
this long-term change in the date of perihelion influences the Earth's
climate.

That's called the orbital forcing theory of climate change.

http://en.wikipedia.org/wiki/Orbital_forcing

The only question left is when will we reach the aphelion of the
hyperbole regarding global warming.

--
Telamon
Ventura, California