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Re: Climate change vs BANDits
I didn't finish answering the question. The medieval warming period was a
local affair, but today's global warming is global.
And ongoing, if anyone has not closely followed it over the past couple of
years. Global warming slowed down maybe due to decreased solar activity.
But the arctic ahs not refrozen. The extent of summer melting has pretty
much equalled or maybe nearly equalled that of three summers ago. Most of
the old solid stable ice is gone and it isn're reforming.
As for this winter, it was caused by a switch in the relative air pressure
between the arctic and the mid latitudes, which happens periodically.
However, the bitter cold air pretty much all came south, leaving the Arctic
warmer than normal for the entire month of January. Now, the cold in North
America was also caused by El Nino, because the greater moisture combined
with the bitter cold to create what today is an uncharacteristic amount of
snow, which continues to keep things chilly.
I might remind you all that the snow the northeast has had this winter does
not equal the amount that was normal when I was a child 45 years ago in
northeastern New York, wehre two feet of snow fell on a weekly basis from
Thanksgiving until mid January and frequently therefafter, the snow was
always hip high except for a short thaw in late January, snow was on the
ground until the end of April, and even into May, and we all lived through
it. None of these weeks long power blackouts. Maybe that was partly
because the snow was colder and less wet and ice storms were rare; I don't
----- Original Message -----
From: "Dora Smith" <email@example.com>
To: <firstname.lastname@example.org>; <email@example.com>
Sent: Saturday, February 13, 2010 6:15 PM
Subject: Re: Climate change vs BANDits
I'd not been following this. I've been very busy, and i took one look at
the subject line. Climate change vs bandits? or BANDwhatsits?
Just so you all know, I looked into it. The medieval warming period was
caused by a change in a narrow band of air currents that affected the
southwestern U.S. and hte North Atlantic. Ice cores and fossil records
and so forth from other parts of the world show taht the warming was not
worldwide. However, enough things melted quickly enough in the northern
Atlantic to destabilize the ocean currents that moderate the climate in
that region, and then the sun entered a relatively inactive period.
Earth's climate is seriously dynamically unstable, and it's extremely
unwise to mess with it, in my opinion. It often takes a relatively minor
event to tip the scales.
"But he agreed that two periods in recent times had experienced similar
warming. And he agreed that the debate had not been settled over whether
the Medieval Warm Period was warmer than the current period."
"Most likely predominantly man-made?" Debate not settled over whether the
Medieval Warm Period was warmer than now?!
Well Phil, that's not what we were being told by people like you even
just up to a few months ago.