THE 3 forms of heat loss from an object or surface at earth's surface are...
04-03-2012, 12:15 PM
RE: THE 3 forms of heat loss from an object or surface at earth's surface are...
Climate Realist the point of my pdf is that convectin is of latent heat and sensible heat.
What is "anti" convection about that?
Convection is commonly used as if it is a heat loss mechanism, which it is not. It is a positive catalyst to more heat loss by 2 of the actual 3 mechanisms of heat loss at earth's surface.
In that respect, I am anti the present use of convection in many cases, because heat loss and heat transfer, or the transporting of heat, are being confused with each other incorrectly. Namely, first heat loss occurs by sensible heat conduction, or latent heat loss, THEN convection occurs to transport the already lost heat away, which allows more heat to be lost by the two heat loss processes. To say convection is a, or use convection as if it is a, heat loss process is incorrect, that is my main point. Such use misleads, and has been used to downplay the importance of latent heat losses greatly.
Given the world is 71% ocean and most of the remaining is wet and covered in plants, that transpire to keep cool, latent heat losses occur virtually everywhere. Some small examples, as you have given, excepted.
My point is that sensible heat convection is quite weak, latent heat is far, far more powerful. I would also of thought that where latent heat loss is occuriing sensible heat loss is reduced, so latent heat is dominant. Latent heat is why heat pipes work. It is also the basic principle in how a fridge works, whether you describe it as only playing a (implied small) part or not.
Cold IS transported down within the climate system, both sensibly and in change of state, ie snow.
Cold is also the easiest way to think about it because it cools earth's surface.
This enormous part and feature of the climate system is utterly omitted from GH, K&T, AGW.
It is a part that totally destroys all the present explanations / calculations, but heck let us avoid that small issue and talk about calling it less energy.
I think most people can relate to the idea of cold coming down in the system, rain and snow are cold arn't they.
It seems simple explanations to get a point across are not the order of the day...
Richard111 - I stand corrected re onion skin weathering, I have not read anywhere what I think about it.
I do not think it is a constant or single process. It is a combination of thermal stress most diurnal cycles (daily), AND ice frost damage when water is present (intermittent).
I always thought it seemed obvious that the ice / frost damage does most of the work, albeit intermittently, yet, thermal stresses gets all the credit. Which isn't how it ought to be to my mind.
That said it is a bit off topic in my opinion for this thread so I'll leave that subject here on this thread at that point.
The whole aim of practical politics is to keep the populace alarmed
(and hence clamorous to be led to safety)
by menacing it with an endless series of hobgoblins, all of them imaginary.
H. L. Mencken.
The hobgoblins have to be imaginary so that
"they" can offer their solutions, not THE solutions.
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