Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: [Phys-l] Arctic sea ice 'faces rapid melt'



How does the opening of shipping lanes through the Polar regions become
"dire effects"? Polar bears have survived many cycles of the ice caps
melting and refreezing. Most of the other fauna most likely did also.
This seems to open up many wonderful opportunities.

Bob at PC

-----Original Message-----
From: phys-l-bounces@carnot.physics.buffalo.edu [mailto:phys-l-
bounces@carnot.physics.buffalo.edu] On Behalf Of Faraday321@aol.com
Sent: Saturday, April 14, 2007 1:31 PM
To: phys-l@carnot.physics.buffalo.edu
Subject: [Phys-l] Arctic sea ice 'faces rapid melt'



The average sea ice extent for the entire month of September this year
was
5.9 million sq km (2.3 million sq miles). Including 2006, the
September
rate of
sea ice decline is now approximately -8.59% per decade, or 60,421 sq
km
(23,328 sq miles) per year.
At that rate, without the acceleration seen in the new modeling, the
Arctic
Ocean would have no ice in September by the year 2060.
******************************
Note the number above assumes a linear model But that's not the way
positive feedback systems work. According to some modelers the ice
melt
could be
complete within 20 years with dire effects expected long before then.
See
links.
Bob Zannelli
***********
_http://www.theweathermakers.com/_ (http://www.theweathermakers.com/)
_http://news.bbc.co.uk/2/hi/science/nature/6171053.stm_
(http://news.bbc.co.uk/2/hi/science/nature/6171053.stm)





************************************** See what's free at
http://www.aol.com.
_______________________________________________
Forum for Physics Educators
Phys-l@carnot.physics.buffalo.edu
https://carnot.physics.buffalo.edu/mailman/listinfo/phys-l