"Unusual weather patterns seem to be rising around the globe. While some places are being hit with unusual cold and humid fronts, there are others
that are being hit by the worse droughts in 500 years."
If an event has happened in the past, why would it be considered to be "unusual" for it to occur again? Our climate is affected by the interaction
of numerous cyclic events of terrestrial and extra-terrestrial origin. These cycles have differing as well as varying time spans and on some
occasions, they overlap providing a combined effect or sometimes, a null effect depending on the nature of the events overlapping. Extra-terrestrial
influenced cycles that can affect climate include such events as sunspots, solar irradiance, lunar position and variations of the earth's solar orbit
as influenced by the sun and other gravitational bodies. Terrestrial cycles that can influence climate include rotational axis shift, at least nine
major oceanic oscillations, volcanic activity and oceanic current changes due to tectonic plate movement. Of course, this list is not all
The point here is that many climate events can occur multiple times over large spans of time.
Since we don't recall them happening within our relatively short collective human memory, we have a knee-jerk reaction to declare that something must
be wrong. "Unusual" is a relative term. And if that term relates to earth's climate history in whole, it's easily misleading. A classic example
of the distortion of human history perception was made when Muaddib says:
"I don't remember this happening so frequently in the past 15 years, and talking with my uncle who has lived in the States for over 25 years
and lived in Texas, he is claiming that this summer is the hottest he has witnessed so far."
Short periods of 15 or 25 years hardly provide a reliable sense of history especially when describing earth's climate. Then there is also the factor
of one's relative perspective which can influence an observation... in other words: If someone grew up in Hawaii and then moved to Chicago during a
spell of mild winters, a sudden cold winter might seem "unusual".
is the real constant. Climate
itself is not.
Muaddib also said:
"The Day After Tomorrow is a good movie, and the science behind the movie is very accurate.."
Numerous climatologists, oceanographers and physicists say that the "science" behind that movie is bull excrement
. Even a basic knowledge of
atmospheric and oceanic heat distribution destroys the fiction in that science-fiction
While some ocean currents may change course, slow, grow or pause altogether for various reasons, warm equatorial waters and atmospheric air currents
will continue to flow towards the poles and then cycle back. The equator to pole heat distribution cycle (or "heat pump cycle") can only be stopped
if equal heating OR
equal cooling were imposed on the entire surface of the earth from pole to pole. The earth's rotation is another main
factor, but if that suddenly stopped, we would be in much bigger trouble than just climatic change.
As long as there is; (1) a temperature differential between the equator and the poles AND
(2) gravity AND
(3) an atmosphere AND
(4) rotation of the earth, there will be an equator to pole distribution cycle.
[edit on 26-6-2004 by Outland]