Cloud Nuclei: Documented Extreme Weather Patterns

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Cloud nuclei, which comprises all weather systems around the world, have a strong influence on weather patterns. Cloud nuclei have been responsible for a few documented extreme weather events, as opposed to converging weather systems or a passing cold front due to an extratropical storm. On a large scale, when anthropogenic pollution results in increased dark particulate matter (rather than from natural cloud nuclei such as dust and clay), we can experience such extreme events. For example, on 26 April 2011, smoke from Central America’s and Mexico’s farmland fires was pulled into the extratropical cyclone that came through the continental United States. This storm produced 122 tornadoes, 15 of which were considered violent (EF4-EF5). This event…show more content…
Cloud nuclei are tiny solid and liquid particles from smoke, ocean spray, and even wind-blown soil. The water molecules that are always present in the atmosphere do not bond together to create clouds because the required energy is much more than what they have to offer. Water molecules require a flat surface, they bond with cloud nuclei, which has a radius up to one micrometer (as shown in figure 1). Cloud condensation nuclei are hygroscopic, having the ability of attracting and holding water molecules from the surrounding environment. They are about 1/100th the size of a cloud droplet, meaning each droplet has at least a speck of dirt, dust, or salt crystal at its…show more content…
The presence of clouds does not cancel the radioactive effect of aerosols; however, it does generally suppress it. Figure 4 is a schematic showing the various components of ARI, where the amount and properties of the solar radiation (such as the solar zenith angle, surface properties, and presence of clouds) contribute to this just as much as the aerosols optical properties that are in the interaction. We need to take ARI into consideration due to the fact that the more aerosols that are suspended in the air, the greater the optical thickness is. If the optical thickness is very large, then the aerosols will then absorb all of the incoming solar
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