When you start talking
about heats of vaporization and fusion, the implication is that you're talking about convection, specifically latent heat transfer.
Not exact matches
The surface
heat capacity C (j = 0) was set to the equivalent
of a global layer
of water 50 m deep (which would be a layer ~ 70 m thick over the oceans) plus 70 %
of the atmosphere, the latent
heat of vaporization corresponding to a 20 % increase in water vapor per 3 K warming (linearized for current conditions), and a little land surface; expressed as W * yr per m ^ 2 * K (a convenient unit), I got
about 7.093.
Movement
of water vapor, and its associated latent
heat of vaporization, is also responsible for
about 50 %
of the transport
of heat from the tropics to the poles.
Think
about the difference in magnitude between the
heat of vaporization of water and the
heat capacity
of air.
Dave Springer says: «That's not quite right
about steam... Where you wandered off the reservation seemed to be implying that water vapor molecules must carry the energy
of 212F sensible
heat plus
heat of vaporization which is
about a thousand times the sensible
heat.
That 490 watts includes
about 100 watts in convection and latent
heat of vaporization.