Uncle Al wrote:
wrote:

Hurricanes grow stronger over warm waters and correspondingly lose
strength over cool waters. Hurricanes typically need an ocean
temperature of about 80º F, 26º C, to form. This page shows the
cooler waters following Hurricane Bonnie caused Hurricane Danielle
following in Bonnie's wake to lose strength and dissipate:

What Lies Beneath a Hurricane.
http://science.nasa.gov/headlines/y2000/ast11sep_1.htm

According to the graphic on this page, the temperature only had to be
reduced to about 75º F for this to occur.

So could we cover the expected hurricane path with chemicals that
produce a temperature reduction on mixing with water to reduce the
ocean temperature?
[snip crap]

Cylinder of water 70 miles in radius and 25 feet deep. Cool from 90 F
to 70 F,

(pi)(112.65 km x 10^5)^2(7.62 meters x10^2)(11.11 C) -- 3.38x10^18
calories
3.38x10^18 calories = 1.41x10^19 joules = 3,378 megatonnes equivalent


Ice covered lakes and rivers only have a relatively small layer of ice
on top. You only need to lower the temperature for a shallow upper
layer.


Bob Clark