Can someone explain to me _why_ the sea levels would increase, if
the evidence is that only the arctic ice will melt, and other ices
(Antarctica, for example) will grow due to increasing snowing? If
I can do the math, this means that sea levels will _decrease_.
The fear is not only that a part of the Greenland icecap will melt and
raise sea levels, the fear is that landed parts of the Antarctic
icecap will melt, too. Worse, many fear that the melting of the
landed parts of the Antarctic icecap will more than counter increased
snow on the continent's edges that comes from increased warmth.
As for Bangledesh and the like -- the fear is not of a multi-decade
rise in sea level, but of a typhoon or hurricane surge that is higher
than those in the past. The increase in height need not be much, just
enough to cause survivors to leave the coast rather than stay.
According to Bryan Woods
http://storm.uml.edu/~woods/2005canes.htm
Past observations have shown that when hurricanes pass over warm
core ocean eddies and are located in atmospheric conditions
favorable for strengthening, they will often strengthen ...
Surface waters of at least 26 [degrees] C are necessary for
hurricane intensification, but do not alone lead to hurricane
development ...
Since variation is perceived as normal, people will need to see a few
other things, too. For example, they may grow concerned at an
increase in the annual variation in river height. Unfortunately, the
big rivers that feed Bangledesh get their water from high mountain
glaciers in the Himalayan Mountains. If the glaciers melt and less
rain is held in place, more water flows during the rainy season and
less during the sunny season.
Both "warm core ocean eddies" and melts in high mountain glaciers
occur more often when energy sticks close to the earth's surface
rather than vanish into deep space.
--
Robert J. Chassell GnuPG Key ID: 004B4AC8
[EMAIL PROTECTED] [EMAIL PROTECTED]
http://www.rattlesnake.com http://www.teak.cc
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