fog

We managed to survive the time change.  We did not have any problems adjusting, because we are retired and do not have to adjust because we do not care what time it is. lol We just stayed around the old rv resort again today.  It was very foggy here today.  The weather guy said that when there is no wind and the humidity is high in Florida it is a prefect recipe for fog. So just exactly what is fog?

Definition of FOG

1

a : vapor condensed to fine particles of water suspended in the lower atmosphere that differs from cloud only in being near the ground 

 The foggiest place in the world is the Grand Banks off the Island of Newfoundland.  Fog is frequent there because as Grand Banks are the meeting place of the cold Labrador Current and the much warmer Gulf Stream from the south.
 The foggiest land areas of the world are Point Reyes, California,  Newfoundland, and Labrador.  They have over 200 days a year in fog.

After looking up fog I learned there are many different kinds of fogs.   The type we had this morning is called radiation fog.  

 

Radiation Fog

This type of fog forms at night under clear skies with calm winds when heat absorbed by the earth’s surface during the day is radiated into space. As the earth’s surface continues to cool, provided a deep enough layer of moist air is present near the ground, the humidity will reach 100% and fog will form. Radiation fog varies in depth from 3 feet to about 1,000 feet and is always found at ground level and usually remains stationary. This type of fog can reduce visibility to near zero at times and make driving very hazardous. 

There are other types of fogs.  I thought you might be interested in knowing these.

Definition of terms:

*****ad·vec·tion 

1. The transfer of a property of the atmosphere, such as heat, cold, or humidity, by the horizontal movement of an air mass: Today's temperatures were higher due to the advection of warm air into the region.

Advection Fog

Advection fog often looks like radiation fog and is also the result of condensation. However, the condensation in this case is caused not by a reduction in surface temperature, but rather by the horizontal movement of warm moist air over a cold surface. This means that advection fog can sometimes be distinguished from radiation fog by its horizontal motion along the ground.

Sea fogs are always advection fogs, because the oceans don’t radiate heat in the same way as land and so never cool sufficiently to produce radiation fog. Fog forms at sea when warm air associated with a warm current drifts over a cold current and condensation takes place. Sometimes such fogs are drawn inland by low pressure, as often occurs on the Pacific coast of North America.

Advection fog may also form when moist maritime, or ocean, air drifts over a cold inland area. This usually happens at night when the temperature of the land drops due to radiational cooling.

Upslope Fog

Upslope fog forms when light winds push moist air up a hillside or mountainside to a level where the air becomes saturated and condensation occurs. This type of fog usually forms a good distance from the peak of the hill or mountain and covers a large area. Upslope fog occurs in all mountain ranges in North America. This usually occurs during the winter months, when cold air behind a cold front drifts westward and encounters the eastward facing slopes of the Rocky Mountains. As the cold, moist air rises up the slopes of the mountains, condensation occurs and extensive areas of fog form on the lower slopes of the mountains

Ice Fog

This type of fog forms when the air temperature is well below freezing and is composed entirely of tiny ice crystals that are suspended in the air. Ice fog will only be witnessed in cold Arctic / Polar air. Generally the temperature will be 14 F or colder in order for ice fog to occur.

 

Freezing Fog

Freezing fog occurs when the water droplets that the fog is composed of are "supercooled". Supercooled water droplets remain in the liquid state until they come into contact with a surface upon which they can freeze. As a result, any object the freezing fog comes into contact with will become coated with ice. The same thing happens with freezing rain or drizzle. 

Evaporation or Mixing Fog

This type of fog forms when sufficient water vapor is added to the air by evaporation and the moist air mixes with cooler, relatively drier air. The two common types are steam fog and frontal fog. Steam fog forms when cold air moves over warm water. When the cool air mixes with the warm moist air over the water, the moist air cools until its humidity reaches 100% and fog forms. This type of fog takes on the appearance of wisps of smoke rising off the surface of the water. 

 Remember, whenever you drive into dense fog ALWAYS slow down. This will allow you to increase the distance between your car and any cars in front of you that you may not be able to see due to the thickness of the fog. It is also important to switch your headlights to low beams. When you drive through fog with your headlights on high beams, a large amount of the light from your cars’ headlights will be scattered off the fog droplets and back into your eyes, which will reduce visibility even more and make it that much more difficult to see the objects in the road in front of your car and along the side of the road!! 

This information is from the National Weather Service.  I thought this was interesting and informative.  I learned some things, that's a good day, now remembering them is another thing. lol

We also did some swimming and bobbing in the pool.  The water is getting warmer and warmer.  I must say that the spa is way to warm for me and many are complaining it is also too hot for them.  "The man"  came with his thermometer and said the temperature was reading 104.  This is what he has it set for.  No one around thought that could be correct, that it had to be way over that.  I do not know if  he is going to reduce the temperature or not.  I really hope so because it feels really good to soak in the heat.  That is Rog's favorite place to go, but he can not stand it that hot either. 

We are heading out in the car tomorrow, so many I can get some pics for you. 

Now I start with the Thanksgiving Funnies
Why did the pilgrims' pants always fall down?

Because he wore his buckle on his hats.

 This is kind of Thanksgiving like.