On 16/01/2013 21:36, willie eckerslike wrote:
On Wednesday, January 16, 2013 8:52:47 AM UTC, Metman2012 wrote:
On 16/01/2013 06:44, Wendy Tinley wrote:

Is the type of fog we are experiencing in the North Midlands radiation fog? Just been reading about fog and the current weather conditions.
There are two kinds of fog, radiation and advection.
What about sea fog?


Most sea fog is advection fog. Warm moist air runs over cool sea whose
surface temperature is below the dewpoint temperature of the air.

But you could have asked "What about hill fog?". Whilst some of this is
due to low cloud being blown onto hills which project above cloud base,
hills also produce their own fog by the following:

1) Forced ascent of air, which is lifted above its condensation level
on windward slopes.

2) Sun warmed hill slopes generating cumulus clouds which may blanket
the summits whilst the low ground around remains sunny.

Both of these can be seen quite frequently in the hillier parts of our
islands.

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