2007-02-23 14:18:56 · 17 answers · asked by pimamedic 2 in Science & Mathematics ➔ Earth Sciences & Geology
clouds being v low 2 the ground
2007-02-23 14:21:34 · answer #1 · answered by blossom 3 · 0⤊ 0⤋
Assuming we are talking about radiation fog...Radiation fog forms on clear
calm nights. The earths heat is radiated out to space after the sun goes down.
The layer of air near the surface of the earth also cools down. If the air
cools enough, the moisture in the air condenses out forming fog. A blanket of
clouds will trap the earths heat and prevent fog from forming. Strong winds
will mix up the air and keep that shallow layer of cool air from forming near
the ground. That is why radiation fog forms on clear cool nights.
The air near the ground cools rapidly and the cooling gradually spreads upward
Since cool air is more dense than warm air, on a night with no wind, gravity
will pull the coolest air down. In a hilly area, the cool air settles into the
valleys and therefore fog forms in the valleys while hilltops may be clear.
2007-02-24 01:59:10 · answer #2 · answered by gaurav s 1 · 0⤊ 0⤋
Fog is a cloud that is not in contact with the ground. Fog differs from other clouds only in that fog does not touches the surface of the Earth. The same cloud that is not fog on lower ground may be fog where it contacts higher ground such as hilltops or mountain ridges. Fog is distinct from mist only in its density. Fog is defined as cloud which reduces visibility to less than 1 km, whereas mist is that which reduces visibility to less than 2 km.
2007-02-23 22:58:50 · answer #3 · answered by paul13051956 3 · 0⤊ 1⤋
Fog is a cloud in contact with the ground. Fog differs from other clouds only in that fog touches the surface of the Earth. The same cloud that is not fog on lower ground may be fog where it contacts higher ground such as hilltops or mountain ridges. Fog is distinct from mist only in its density. Fog is defined as cloud which reduces visibility to less than 1 km, whereas mist is that which reduces visibility to less than 2 km.
2007-02-23 22:23:08 · answer #4 · answered by Answergirl 5 · 0⤊ 1⤋
it is caused by the cooling of the Earth by radiation. At night, radiation lowers water temperature comparatively slowly, but land cools rapidly, becoming cooler than the air above it; consequently a fog is formed. Such fog is seldom thick and usually “burns off” in the morning.
2007-02-23 22:29:21 · answer #5 · answered by aSsE 2 · 0⤊ 0⤋
Most types of fog form when the relative humidity reaches 100% at ground-level. Fog can form suddenly, and can dissipate just as rapidly, depending what side of the dewpoint the temperature is on.
2007-02-23 22:21:48 · answer #6 · answered by Anonymous · 0⤊ 0⤋
When thin clouds come very low in the troposphere,it causes fog.
2007-02-23 22:51:13 · answer #7 · answered by Aarohi J 2 · 0⤊ 0⤋
The air tempature that is near ground level is either hotter or colder than the air tempature of the ground. When that air mixes it causes fog.
2007-02-23 22:21:58 · answer #8 · answered by neiu_eagles_2006 1 · 0⤊ 0⤋
a mommy fog and a daddy fog ! What else silly.
2007-02-23 22:22:37 · answer #9 · answered by ? 3 · 0⤊ 0⤋
all i know is that when the coldness of the water interfers with the warm land it interacts with it and produces the fog
2007-02-23 22:36:25 · answer #10 · answered by Nik 2 · 0⤊ 0⤋