On Thu, 10 Dec 2009 13:14:55 -0800 (PST), JohnM
wrote:

On Dec 10, 8:33Â*pm, Bill Ward wrote:

Since clouds are broadband radiators, they efficiently radiate that heat
as LWIR from the top of the cloud directly to space,

So clouds radiate from the top, but not from the sides or the bottom?


Clouds would/could receive more on the bottom
than they radiate, while at the top at night, LWIR BB
to 3 K space is substantial, in daylight, they reflect
enough to be a cooling factor overall.