In uk.sci.weather on Sat, 28 Apr 2007, Citizen Bob wrote
:
On Sat, 28 Apr 2007 17:39:13 GMT, Paul Hyett
wrote:

What is the mechanism by which the temperature *rises* when clouds come
over on otherwise clear nights*?

Common sense suggests that the most they could do would be to halt the
drop in temperature. After all, a rise in temperature *should* require a
heat source, and those are absent at night.

*I'm referring to nights with no frontal activity, of course.

The fact that the weather changed "when clouds come over" tells you
that a front or weather cell of some sort moved in.

Hi Bob.

Notice that I specifically referred to nights *without* frontal
activity, though...
--
Paul Hyett, Cheltenham (change 'invalid83261' to 'blueyonder' to email me)