Difference Between Cyclone and Hurricane

Cyclone and hurricane are two of the most severe types of tropical storms, but at the same time, these terms can be very misleading. The main difference between them is the location where each of them occurs. Hurricanes form in the Atlantic and Pacific basins, whereas cyclones form in the South Pacific and Indian Oceans. Understanding these terms helps explain global storm patterns.

Hurricane and cyclone are both terms used to describe the same meteorological phenomenon: a tropical cyclone. The main difference between them is their geographical location.

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• Hurricane: This term is used to describe tropical cyclones that form in the North Atlantic, central North Pacific, and eastern North Pacific. These storms are characterized by sustained winds of at least 74 mph (119 kph) and can cause severe weather, including heavy rains and storm surges.
• Cyclone: ​​This term is usually used in the South Pacific and Indian Oceans. Like hurricanes, cyclones have sustained winds of 74 miles per hour or more and can cause significant damage.
• Typhoon: A tropical cyclone formed in the northwest Pacific Ocean. Its characteristics and destructive power are similar to those of hurricanes and cyclones.

Geographical differences

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The naming convention is purely geographical:

• Hurricanes occur in the Atlantic and northeastern Pacific Oceans.
• Typhoons occur in the northwest Pacific Ocean.
• There are cyclones in both the South Pacific and Indian Oceans.

Tropical cyclones, including hurricanes, typhoons and tornadoes, can intensify under certain environmental conditions. Warm ocean waters and favorable winds fuel these powerful storms. Understanding the factors that enhance or weaken their intensity is important for predicting cyclone behavior and minimizing their impacts on vulnerable regions.

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The intensity of hurricanes, typhoons and cyclones is influenced by several key factors related to environmental conditions and atmospheric dynamics. The following are the main factors that determine their intensity:

Factors that strengthen tropical cyclones

1. Warm sea surface temperatures: Tropical cyclones can only form when sea surface temperatures reach at least 26°C. Sea surface temperatures of 5°C (about 80°F) are unlikely to form or develop. As warm waters, they provide the heat and moisture needed for storms to form.
2. Low vertical wind shear: Vertical wind shear is therefore related to height, i.e. the change in wind speed or direction. Likewise, low wind shear provides a means by which storms do not break apart, providing an opportunity for the warm, moist air necessary for cyclone formation. The formation of such a structure is not conducive to high wind shear, which would hinder the formation of storms.
3. Sufficient moisture in the atmosphere: Warm, moist air must converge to form a cyclone, as a moist atmosphere is essential for cyclone formation. Moist air helps cloud formation and precipitation, releases latent heat, and further stabilizes the storm.
4. Ocean Areas Along the Storm Track: Large areas of warm sea surface are expected along the storm track, providing heat and moisture to the moving cyclone.

Factors that weaken tropical cyclones

1. Cooler sea surface temperatures: When sea temperatures drop below 26 degrees Celsius, less energy is available to the cyclone, causing it to weaken.
2. High vertical wind shear: Increased wind shear can disrupt the organization of a storm, causing it to lose structure and strength. This can cause a dispersion of the heat and moisture that a storm relies on.
3. Dry Air Infiltration: The introduction of dry air into a cyclone can inhibit cyclone development by reducing the moisture required for cloud formation and precipitation, which is essential for the energy of a storm.
4. Land Interaction: When a cyclone passes over land, it loses its main source of energy (warm ocean water) and weakens rapidly. Friction on the land surface can also disrupt the storm’s circulation.

Other factors to consider

• Air Pressure: Another characteristic of a cyclone is negative pressure, especially in the center of the storm. The pressure continues to drop, causing the winds to become more intense, thus intensifying the storm.
• Climate change: Some recent studies suggest that climate change may be a factor in the more frequent occurrence of powerful hurricanes because warmer ocean waters provide more fuel for cyclones to form.

Future studies indicate that more Category 4 and 5 storms are likely to occur in the future. These factors are critical in analyzing hurricane characteristics and possible outcomes to develop appropriate prevention and response strategies.

By analyzing the environmental conditions that determine cyclone intensity, experts can better predict the development and outcome of storms. The role of climate change in increasing storm intensity highlights the need for proactive disaster planning and response strategies as we face the risk of increasingly severe cyclones and hurricanes in the future.

Source: https://dinhtienhoang.edu.vn
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