London smog.
Sulfurous smog, which is also called “London smog,” results from a high concentration of sulfur oxides in the air and is caused by the use of sulfur-bearing fossil fuels, particularly coal.
Why is sulfurous smog called London smog?
Sulfurous smog is also called “London smog,” (first formed in London). Sulfurous smog results from a high concentration of SULFUR OXIDES in the air and is caused by the use of sulfur-bearing fossil fuels, particularly coal (Coal was the mains source of power in London during nineteenth century.
What is sulfuric smog?
Sulfurous smog, also known as London smog, develops due to high concentration of sulfur oxides in the air. This gas is a serious air pollutant, causing irritation to human eyes, nose and lungs. It is released into the air by sulfur-bearing fossil fuels like coal. Volcanoes also emit sulfur dioxide in the atmosphere.
What is the other name of photochemical smog?
Los Angeles smog
Photochemical smog, which is also known as “Los Angeles smog,” occurs most prominently in urban areas that have large numbers of automobiles. It requires neither smoke nor fog. This type of smog has its origin in the nitrogen oxides and hydrocarbon vapours emitted by automobiles…
What is the scientific name for smog?
Today, most of the smog we see is photochemical smog. Photochemical smog is produced when sunlight reacts with nitrogen oxides and at least one volatile organic compound (VOC) in the atmosphere. Nitrogen oxides come from car exhaust, coal power plants, and factory emissions.
What is London smog called?
Sulfurous smog
Sulfurous smog (London smog)
This type of air pollution emerges as a result of burning coal, the accumulation of particulate matter from industrial activity and a drop in temperature. The polluting particles mix with the cold air to form a thick fog that significantly worsens overall air quality.
What is London smog and LA smog?
The London-smog mostly occurring in the winter months consists of a mixture of gaseous and solid aerosoles as well as of natural fog. The Los Angeles-smog, which is relatively dry, is formed only during sunny sommerdays by photo chemical process.
How is sulfurous smog made?
Causes of Sulfurous Smog
Sulfurous smog is created by the burning of sulfur-bearing fossil fuels, primarily coal, which results in a high concentration of sulphur oxides in the air. Dampness and a high concentration of suspended particulate matter in the air intensify this type of smog.
What is the difference between sulphurous smog and photochemical smog?
Sulfurous smog generally occurs in areas where there is more industry, or places that rely on fossil fuel combustion for energy and heating. Photochemical Smog is generally found in urban and industrial areas and occurs when hydrocarbons from vehicle exhaust react with sunlight to produce ozone.
Does sulfur create smog?
Human health and environmental concerns
Sulfur dioxide also contributes to the formation of thick haze and smog.
What are the two types of photochemical smog?
At least two distinct types of smog are recognized: 1) Sulfurous smog (or ‘London-type’ smog); 2) Photochemical smog (‘Los Angeles-type’ smog).
Why is it called photochemical smog?
Ground-level ozone constitutes one of the major components of photochemical smog, so called because of the photochemical reaction of air pollutants such as nitrogen oxides (NOx) and volatile organic compounds (VOCs) with ultraviolet light (sunlight); thus, the O3 levels vary strongly with season and the highest levels
What is the other name of photochemical reaction?
Photodissociation, photolysis, or photo decomposition is a chemical reaction where photons break down a chemical compound.
What are types of smog?
At least two distinct types of smog are recognized: sulfurous smog and photochemical smog.
What is the other meaning of smog?
: a fog made heavier and darker by smoke and chemical fumes also : a photochemical haze caused by the action of solar ultraviolet radiation on atmosphere polluted with hydrocarbons and oxides of nitrogen especially from automobile exhaust.
What is smog answer in one word?
Smog is the term derived from two words smoke and fog. It is a kind of intense air pollution.
Is London called the smoke?
In combination with climatic conditions this often caused a characteristic smog, and London became known for its typical “London Fog”, also known as “Pea Soupers”. London was sometimes referred to as “The Smoke” because of this.
What is winter smog?
Winter smogs are formed when a thin layer of the atmosphere near the earth becomes cooler than that above it – this is known as temperature inversion. When this happens pollutants are trapped at ground level until there is a change in the weather.
What is the Los Angeles smog?
Type of air pollution characterized by high levels of ozone and low visibility, typically found in cities located in a valley (e.g., Los Angeles, Denver, Mexico City).
Is LA smog or fog?
Los Angeles is a city notorious for its smog, a combination of particle and ozone pollution. The prevalence of these pollutants result from many factors, including the burning of fossil fuels, especially by vehicles, ships, planes and manufacturing, as well as wildfires.
Why is La prone smog?
Constant vehicle traffic on LA and Long Beach freeways, in the ports, and in the skies all contribute to ozone-layer depletion and smog formation. The Los Angeles area is also home to more than its fair share of refineries and industrial facilities, which contribute to air pollution.