On 29 Sep, 19:44, Pete L wrote:

are sea
levels are higher in September than they are in March

the area of sea ice at the Pole in March is 14m sq km and in Sept 3m
sq km. So, 11m has melted with as far as I can make out minimal
difference to sea levels.

If the North Pole becomes ice free in
Summer it isn't going to make any significant difference - we won't
have to move to higher ground. Let's suppose the melting is due to
Man.

Why?

According to my not highly cherrished (but the highly vaunted) copy of
the Encyclopaedia Britannica, the amount of Carbon dioxide levels by
molecules is something like 0.03%.

I had thought it was 0.5% by volume or mass but what do I know.
Besides which the output from industry is trivial compared to that
from nature. Most of which is soluable in very cold water which free
of ice the Arctic is a pretty good sump of.

Can you do something about your paragraph spacings silver pait.

An ice free NW and NE passage is going to save an awful lot of
CO2 emissions from shipping and presumably mitigate Global Warming.

Oh dear.

The idea that an ice free Pole is a 'bad' thing is nonsense. No doubt
with the temperature rise, more of the Greenland ice sheet would melt
but, as most of the inland surface is of high elevation

Since we don't know anything about Greenland under the ice any
commentas about its melting is pointless.

temperature of -20 rising to -15 isn't going to produce any melting.

Since ice is not opaque the temperatures just under the surface are
not prone to wind chill and are free of all other cooling effects too
AFAIK.

So, the BBC and other scaremongers, need not get too excited over an
ice free Summer North Pole. Yes, I do understand positive feedback and
albedo etc. - but the North Pole is cold not just because it is
covered with ice - it cools in Winter due to the lack of the sun's
radiation. It seems inconceivable that the Earth will warm enough to
prevent Winter ice forming.

The temperature of the Arctic is governed by the thermohaline column.
Mixing takes place according to ocean dynamics. Warm winters at depth
mean no ice forms if the mixing takes place upwards.

At the bottom of the ocean it is going to be about 4 degrees C
whatever is it not?

My next thought then was this - because of the shape of the earth,
that the Equator diameter is 100 miles(?) more than the Poles any rise
of sea level from Northern latitudes would find itself pushing 'uphill'

The earth is attractive to things above it but when they make contact
that is it. They are part of the matrix.

It's the main reason that the moon doesn't perform levitation. Well
apart from the lack of gravity, distance and stuff, that is.

Consider the gyres. Billions of tons at the coast of North America
shifting at millions of cubic tons per hour; and the moon raising
tides through individual particles in it?

Really? WTF?