What is fog exactly?
Fog is a kind of cloud that touches the ground. Fog forms when the air near the ground cools enough to turn its water vapor into liquid water or ice. Ice fog forms when the air near the ground is cold enough to turn the water in fog into ice crystals.
How is fog formed simple?
Fog forms from water vapor, which is water in the form of a gas. Fog is very common in valleys and near bodies of water. It usually forms at night, when the air cools down.
Where does fog come from?
Basically, fog forms when warm air meets colder air. When this happens, water vapor in the air — a gas — is cooled enough for the gas to turn to a liquid in the form of tiny water droplets. This process is called “condensation.”
Why does fog form over water?
Fog that forms over water is commonly referred to as sea fog or lake fog. It forms when warm, moist air flows over relatively colder waters. Sometimes radiation fog that forms over land can move over bays, harbors, inlets, the intra-coastal and nearby ocean waters.
Is fog gas or liquid?
A mist or fog is a microscopic suspension of liquid droplets in a gas such as the Earth’s atmosphere. The term is most often used with respect to water vapor. The size of the liquid particles is usually in the range of 1 to 1,000 nanometers. Do not confuse a fog with a vapor.
Can fog cause a cough?
Thus, fog induces coughing and increases in Vt, Vt/ Ti, and V˙ i in healthy subjects; NCS possesses antitussive effects and attenuates fog-induced changes in the pattern of breathing, possibly through inhibition of rapidly adapting “irritant” receptors.
What clears fog?
Fog often dissipates with daylight. This is sometimes referred to as the fog “burning off” but that analogy is not correct. When the sun rises, the air and ground warm up. This leads to the air temperature being warmer than the dew point temperature, which causes the fog droplets to evaporate.
How does fog form on a lake?
The lake water evaporates into the air above the lake surface. As the dew point approaches the air temperature, condensation occurs, forming fog droplets. The condensation further warms the air. The warmed air rises and mixes with the cold air above it, reaching saturation and causing more fog to form.
What is ocean fog?
What is fog in simple words?
Fog is a meteorological phenomenon when the clouds are getting thick. It may appear on land or sea and it usually lowers visibility (makes it hard to see very far). When fog forms at high levels it creates a cloud called stratus. Fog is made up of tiny water droplets or, in very cold conditions, ice crystals.
What are the conditions necessary for the formation of fog?
It is formed when moist air is cooled below its dew point by contract with a cold land surface that is losing heat by radiation. Conditions for fog in this state to form require clear skies at night, light winds (usually less than 5 knots) and humid air.
How can fog form when its really cold?
Clear skies and calm wind is also needed to help fog form. When the air is cold near the surface and low level moisture is high, the air then becomes saturated forming fog. Another factor that can help in the development of fog is upslope wind.
What causes fog to form?
Fog is a meteorological phenomenon caused by a supersaturation of the air, so that it can no longer hold water vapor. The water vapor precipitates out into small droplets of condensation, or fog. The processes are similar to those which make clouds, although fog forms close to the ground, rather than higher up in the atmosphere.
What are the four types of fog?
– Fog is a cloud at the ground. There are four kinds of fog: radiation fog, advection fog, evaporation fog, and upslope fog. Lifting Mechanisms that Form Clouds. – Most clouds form when air cools to the dew point as a parcel of air rises vertically.
https://www.youtube.com/watch?v=mgD5uyQr6ZA