I understand that MO use (or used to use) a relative huidity of 95% as a
guide to the dividing line between between mist and haze.
Further distinction between mist and fog is an arbitrary one of visibility.
Fog when vis less than half a mile, greater then mist.
(Maybe it has changed to metric since my day!)
PeterJ

"Gianna" wrote in message
...
Joe Egginton wrote:
Gianna wrote:
Stuart wrote:
What causes haze, and how is it predicted?


dust, water vapour, etc..





It can be countered by adding a skylight filter.


Ah yes, I have a Hoya 1A somewhere ...
(last seen adorning my webcam since my 35mm kit is retired)

--
Gianna

http://www.buchan-meteo.org.uk
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