Fog Weather

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Haze is a characteristic climate conditions that can make perceivability get to be zero. It can bring about mischances on ordinarily safe streets and is such a genuine climate condition, to the point that schools postpone the begin of the day until the sun blazes it off. So how does haze structure? In the first place comprehend that mist is essentially a cloud on the ground. This implies like mists it is an accumulation of modest water beads shaped when dissipated water is cooled. The way it is cooled decides how mist is framed.

The main way that haze is framed is by infrared cooling. Infrared cooling happens because of the change of seasons from summer to fall and winter. Amid the mid year the ground retains sun based radiation. As air disregards it is made warm and wet. At the point when the seasons change this mass of warm damp air crashes into the cooler that is presently common. This reason is the water vapor noticeable all around mass to gather rapidly and haze is shaped. This haze is frequently called radiation mist because of the way it shapes. This kind is the most widely recognized sort of mist. It likewise happens when an unseasonable day of warm climate joined with high moistness is trailed by dropping temperatures

The following way that mist structures is through shift in weather conditions. Shift in weather conditions is wind driven haze arrangement. For this situation warm air is pushed by winds over a cool surface where it consolidates into haze. There are additionally different sorts of mist such as hail haze or solidifying mist. Each of these conditions is the place dense water beads are cooled to the point of solidifying. There is additionally mist shaped over waterways. One sort is ocean smoke. This is a kind of mist that structures when cool air ignores a warm waterway or damp area.

All in all we see that haze is shaped at whatever point there is a temperature distinction between the ground and the air. At the point when the stickiness is sufficiently high and there is sufficient water vapor or dampness mist is certain to shape. However the sort of mist and to what extent is last and its impacts will relies on upon the diverse conditions specified. One intriguing sort of haze really makes snow liquefy speedier.

Reason of fog


 Mist is brought about by small water beads suspended noticeable all around. The thickest hazes have a tendency to happen in mechanical ranges where there are numerous contamination particles on which water beads can develop.

Types of fog:

Fogs which are composed entirely or mainly of water droplets are generally classified according to the physical process which produces saturation or near-saturation of the air. The main types of fog are:


Radiation fog

Radiation fog usually occurs in the winter, aided by clear skies and calm conditions. The cooling of land overnight by thermal radiation cools the air close to the surface. This reduces the ability of the air to hold moisture, allowing condensation and fog to occur. Radiation fogs usually dissipate soon after sunrise as the ground warms. An exception to this can be in high elevation areas where the sun has little influence in heating the surface.

Valley fog

Valley fog forms where cold dense air settles into the lower parts of a valley condensing and forming fog. It is often the result of a temperature inversion with warmer air passing above the valley. Valley fog is confined by local topography and can last for several days in calm conditions during the winter.

Advection fog

Advection fog occurs when moist air passes over a cool surface and is cooled. A common example of this is when a warm front passes over an area with snow cover. It is also common at sea when moist tropical air moves over cooler waters. If the wind blows in the right direction then sea fog can become transported over coastal land areas.

Upslope fog

Upslope fog or hill fog forms when winds blow air up a slope (called orographic uplift). The air cools as it rises, allowing moisture in it to condense.

Evaporation fog

Evaporation fog is caused by cold air passing over warmer water or moist land. It often causes freezing fog, or sometimes Types of frost. When some of the relatively warm water evaporates into low air layers, it warms the air causing it to rise and mix with the cooler air that has passed over the surface. The warm, moist air cools as it mixes with the colder air, allowing condensation and fog to occur.

Evaporation fog can be one of the most localised forms of fog. It can happen when:

Cold air moves over heated outdoor swimming pools or hot tubs, where steam fog easily forms.
Cold fronts or cool air masses move over warm seas. This often occurs in autumn when sea temperatures are still relatively warm after the summer, but the air is already starting to cool.

Freezing fog

Freezing fog is composed of supercooled water droplets - which remain liquid even though the temperature is below freezing-point. One of the characteristics of freezing fog is that rime - composed of feathery ice crystals - is deposited on the windward side of vertical surfaces such as lamp posts, fence posts, overhead wires, pylons and transmitting masts.



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