On Oct 19, 9:13?am, "BillP" wrote:
"Chuck Gould" wrote in message

oups.com...

Attempts to navigate the NW Passage have been regularly thwarted since
the 16th century, with no navigable channel available. Cook,
Vancouver, etc all searched for the NW Passage....so it's not entirely
correct to say we didn't have any idea what when on up there prior to
the early 1970's.

I didn't say that we had no idea what was going on up there I'm just saying
that the only official records maintained are from 1972 and that we have no
idea how many times it's been navigable.
The global warming theorists use this fact to their advantage when they say
" The passage in navigable for the first time on record". Do you feel this
is an honest statement?



Undoubtedly you entirely missed the comment in my original post where
I theorized that the NW Passage must have been commonly open during
some periods of time prior to the 16 & 17 century expeditions that
were sent to look for it. (Most rumors have at least some basis in
fact, and stories of passage across the top of North America had to be
common enough and convincing enough that huge sums of money and
resources would be engaged to try to find and confirm it).

If you missed that, you also missed my comment that a period warm
enough to remove ice from the NW Passage 500 years or more ago could
not have been caused by the internal combustion engine.


My opinions:
Does our planet warm and cool? Heck yes.
Is it warming now? Yes, seems to be.
Is it entirely the fault of mankind and technology? Probably not.
Does man and his technology have some influence on the phenomenon?
Probably so.

That's as "honest" as I can manage. :-)







Thanks for letting me know it had been open briefly
in the 1940's, it will be interesting to see how long it remains open
this time.

Here's another one that made the passage in 1903-http://www.framheim.com/Amundsen/NWP/NWPassage.html

Beginning in the 1970's we had satellite and other data that allowed
us to track the arctic ice coverage, so we can establish with fair
certainty thta in the last 35 years the NW Passage has not been
navigable during the summer months.

I have no doubt that the passage has not been passable since the 70's, the
earth was in the beginning of a cooling period at the time.