5. Haar fog off
East coast
AAddvveeccttiioonn FFoogg Chinese tourist
spot hidden in early
morning fog
Advection fog
near a river –
horizontal
movement of
air over colder
surface
Golden Gate
Bridge San
Francisco –
105 foggy
days a year
Salt provides an ideal hygroscopic nuclei
to help form this haar fog off California
8. RRaaddiiaattiioonn
FFoogg
Thick fog makes travelling very difficult &
dangerous
Pollution gets trapped under a
temperature inversion producing
the orange smog over LA
11. FFoogg oorr MMiisstt??
DENSITY
Fog – when visibility is less than 1km
Mist – when visibility is between 1 -2km
There is no difference between a cloud in the air
and fog on the ground other than their altitude