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[greenyes] Climate Disruption - Northern Hemisphere- Tipping Point


Global warming 'past the point of no return'
By Steve Connor, Science Editor

A record loss of sea ice in the Arctic this summer has convinced scientists
that the northern hemisphere may have crossed a critical threshold beyond
which the climate may never recover. Scientists fear that the Arctic has now
entered an irreversible phase of warming which will accelerate the loss of
the polar sea ice that has helped to keep the climate stable for thousands
of years.

They believe global warming is melting Arctic ice so rapidly that the region
is beginning to absorb more heat from the sun, causing the ice to melt still
further and so reinforcing a vicious cycle of melting and heating.

The greatest fear is that the Arctic has reached a "tipping point" beyond
which nothing can reverse the continual loss of sea ice and with it the
massive land glaciers of Greenland, which will raise sea levels

Satellites monitoring the Arctic have found that the extent of the sea ice
this August has reached its lowest monthly point on record, dipping an
unprecedented 18.2 per cent below the long-term average.

Experts believe that such a loss of Arctic sea ice in summer has not
occurred in hundreds and possibly thousands of years. It is the fourth year
in a row that the sea ice in August has fallen below the monthly downward
trend - a clear sign that melting has accelerated.
Peter Anderson, President
4513 Vernon Blvd. Suite 15
Madison, WI 53705-4964
Ph: (608) 231-1100
Fax: (608) 233-0011
Cell: (608) 698-1314
eMail: anderson@no.address

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