Predictions that the north pole will be ice free this summer are based on the amount of "first year ice".
POLAR HEAT: Scientists say this summer may be the first time in recorded history that Arctic sea ice melts completely. They warn the melting could lead to a faster rate of global warming.
by Patricia McFadden
Informify Staff Writer
July 1, 2008
If last summer’s record melting trend continues, the ice that usually floats on the surface of the Arctic Sea year-round may be gone by September. More than 70% of the current Arctic sea ice is less than a year old and only 60 inches deep. Mark Serreze, a senior researcher at the National Snow and Ice Data Center at the University of Colorado, said there’s a 50% chance that ice at the North Pole will melt completely this summer.
Hudson bay has "first year ice" every year. We know that because the port of Churchill is on Hudson bay and shipping goes through Hudson bay for three months of every year. Hudson Bay is also the habitat for a population of polar bears. Here is a picture of the port of Churchill with a freighter tied up at the dock.
The Port of Churchill is Canada’s only Arctic seaport, and is strategically located on the west coast of Hudson Bay. The Port brings the world of ocean trade to the doorstep of Western Canada. Churchill’s unique location provides opportunities for the export of grain, manufactured, mining and forest products, as well as the import of ores, minerals, steel, building materials, fertilizer and petroleum products for distribution in Central and Western Canada.
The Port of Churchill offers four berths for the loading and unloading of grain, general cargo, and tanker vessels. The Port can efficiently load Panamax size vessels. Close coordination with the Hudson Bay Railway allows efficient access to all North American railways through a connection with the Canadian National Railway system.
So how is the "first year ice" on Hudson Bay doing this year compared to the same date last year?
Greenland is the white. Colored is the arctic sea ice. Hudson bay is to the far left of each picture. You can see that last year at this time Hudson Bay was ice free but this year it is half covered in ice. If the ice is melting slowly on Hudson bay how is it going to melt at the North Pole? Source:http://igloo.atmos.uiuc.edu/cgi-bin/test/print.sh?fm=07&fd=03&fy=2007&sm=07&sd=03&sy=2008