THE 3 forms of heat loss from an object or surface at earth's surface are...

[Derek]

(04-02-2012 03:48 PM)Climate Realist Wrote:  Convection occurs when the ground heats a packet of air by conduction and continual rising of the air as it expands.

Ok, so conduction of sensible heat from land to air occurs before and causes convection. One of the points of my pdf.

You do not seem to mention convection of latent heat of water vapourisation?
Where do clouds come from?

With regard to,

Climate Realist Wrote:" Latent heat requires some medium to change physical form. Fine over water, or in a vegetated area but in a dry area such as a desert, mountain top or at the poles convection has to rule the roost. "

Over what percentage of earth's surface can latent heat of water vapourisation not play a significant role?

I would also note phase changes (latent heat) tranports vast amounts of cold down within the climate system too. ie, snow / ice / frost.

From what you describe it would seem to be a very small percentage. Is this a case of the exception proving the rule. Yes / No??