[TimeStar] weather events / cyclones (not).
Bernie
bernie2t at telstra.com
Fri Mar 4 02:47:21 EST 2005
The "Balkan Cyclone" weather event.
This seems nit-picky - but I believe it is a significant 'language
shift' that should be telling us something if we're paying attention.
The Balkan area is (in Latitude terms) almost level with London. Now
that is, by definition,
"mid-latitude" - neither equatorial nor polar.
"Cyclones" are, by definition, "Tropical Revolving Storms" - "TRS"
for short. (As are typhoons and hurricanes.)
I have seen three (and there have probably been more) references
recently to cyclones in mid and even high latitudes - this one, also
Kamchatka, and the very peculiar low that was in the Bass Strait a
few weeks ago.
These were/are ALL intense low pressure areas - NOT cyclones.
The mechanism for a TRS is completely different, in that they depend
on sea surface temperature to provide them with energy. If the SST is
below 26 degrees centigrade, cyclones cannot form, or (if
pre-existing) will degenerate into mid-latitude depressions. Hence,
TROPICAL storms. And this is why they almost invariably happen in
summer months. They degenerate over land because they lack 'fuel'
from the warm seas beneath them, and become "mid latitude rain
depressions" until they peter out into ordinary depressions and
finally vanish.
These intense depressions are violent low pressure areas that do not
require fuel from warm seas, maintain themselves overland, and exist
in mid to high latitudes over cold seas.
YET the assorted met bureaus and media are calling them cyclones?
Are we being groomed for something? Is the language being shifted to
make something very, very peculiar - a new meteorological phenomena
in fact - appear 'normal'? (Oh - it's just a cyclone - that's OK
then, nothing strange about that....)
These storms are a symptom of climate change, I believe. (If not,
then I look to weather warfare at work! But I prefer the climate
change explanation.) Now, I could be accused of playing semantics -
but I know for sure that the driving mechanisms of TRS's and these
depressions are as different as a petrol and a diesel engine. So why
call chalk, cheese?
And for those of you who saw "The Day After Tomorrow", there's a
snip of conversation in it that goes something like:-
"But cyclones don't happen over land!"
"They do now."
It was when the meteorologists were looking at satellite pix of the
three giant cyclonic depressions
covering the northern hemisphere.
Perhaps these nasty little depressions are harbingers of the Big
Ones that are big enough to pull down tropospheric air at minus 150
degrees centigrade to snap-freeze mammoths and man alike.
Just a thought....... Bernie.
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