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>V1.40 of Abyss (still in Beta testing) adds a thermal compensator to
>our model.  This allows for progressive cooling and warming over the
>course of the dive, and adds penalties or bonuses to the resulting
>deco as is appropriate.

I assume that this models the body as one single object at some
"temperature", NOT as different objects at different temperatures that
are connected physically and exchanging gas via perfusion through
tissues and blood flow.  

How do you determine the "temperature" and perform the compensation,
is this simply some type of "user input" - what kind of input - do you
ask water temp, type of insulation (e.g. 1/4" wetsuit, drysuit with
xyz woolies, etc)???

The biggest problem with something like this is it's NOT in a computer
performing real time calculations but must be *assumed* up front and
could be different in real world conditions due to unexpected changes
in weather patterns.  Even in a computer performing these
calculations, there would have to be temperature probes in order to
really determine what the diver is experiencing.  Simply sampling the
water temp really isn't sufficient.  Different bodies and circulatory
systems react differently to "cold".  By actually measuring the temp
on the body you would at least remove one of these variables, but I'm
still not sure if that would be sufficient (better, yes).

-Carl-

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