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"Tropical eyelones origlnatic on the oceanic parts and as soon as they reach the terrestrial parts, these storms grudually weakenand end. Explain with reasons. (125 Words) [UPPSC 2019]
1. Loss of Heat Source: Tropical cyclones derive their energy from warm ocean waters. When they move over land, they lose this primary energy source. Evaporation from the ocean, which fuels the cyclone, ceases, leading to a decrease in storm intensity. 2. Increased Friction: On land, cyclones encounRead more
1. Loss of Heat Source: Tropical cyclones derive their energy from warm ocean waters. When they move over land, they lose this primary energy source. Evaporation from the ocean, which fuels the cyclone, ceases, leading to a decrease in storm intensity.
2. Increased Friction: On land, cyclones encounter surface friction from mountains, forests, and buildings. This friction disrupts the cyclone’s circulation and reduces its wind speeds, causing the storm to weaken.
3. Reduced Moisture Supply: Cyclones require high humidity to maintain their structure. Over land, the moisture supply is limited compared to the ocean. As a result, the storm’s convective activity diminishes, leading to weakening.
4. Terrain Disruption: Landforms like mountains can disrupt the storm’s structure by breaking up the wind patterns and rainfall distribution, further contributing to the cyclone’s dissipation.
Recent Example: Cyclone Amphan (2020) weakened as it moved inland after making landfall in West Bengal, illustrating the typical weakening process of tropical cyclones over terrestrial areas.
Conclusion: Tropical cyclones weaken upon reaching land due to the loss of their heat and moisture source, increased friction, and terrain disruptions. These factors contribute to the gradual dissipation of the storm’s intensity.
See lessWhat is cyclone? Explain the causes of the origin of temperate cyclones. (200 Words) [UPPSC 2021]
Cyclone: Definition and Causes A cyclone is a large-scale air mass that rotates around a strong center of low atmospheric pressure. It is characterized by strong winds, heavy rain, and storm surges. Cyclones can be classified into various types based on their location and formation characteristics,Read more
Cyclone: Definition and Causes
A cyclone is a large-scale air mass that rotates around a strong center of low atmospheric pressure. It is characterized by strong winds, heavy rain, and storm surges. Cyclones can be classified into various types based on their location and formation characteristics, including tropical cyclones, extratropical cyclones, and temperate cyclones.
Causes of the Origin of Temperate Cyclones
Temperate cyclones, also known as mid-latitude cyclones, occur in the mid-latitudes between 30° and 60° latitude. Their formation is influenced by several factors:
Conclusion: Temperate cyclones originate due to the interaction of temperature contrasts, the influence of jet streams, the Coriolis effect, frontogenesis, and upper-level atmospheric disturbances. These factors combine to create dynamic and powerful weather systems in mid-latitude regions.
See lessDescribe the causes of origin, structure and weather associated with tropical cyclones. (200 Words) [UPPSC 2022]
Causes of Origin, Structure, and Weather Associated with Tropical Cyclones Causes of Origin: Tropical cyclones are formed when a combination of atmospheric and oceanic conditions come together over warm tropical waters. The primary factors that lead to the formation of a tropical cyclone are: Warm oRead more
Causes of Origin, Structure, and Weather Associated with Tropical Cyclones
Causes of Origin:
Tropical cyclones are formed when a combination of atmospheric and oceanic conditions come together over warm tropical waters. The primary factors that lead to the formation of a tropical cyclone are:
Structure:
A tropical cyclone is characterized by:
Weather Associated with Tropical Cyclones:
Tropical cyclones bring severe weather conditions, including:
- Strong winds: Sustained winds can reach up to 250 km/h (155 mph) and cause extensive damage.
- Heavy rainfall: Heavy precipitation can lead to flooding, landslides, and storm surges.
- Storm surge: A rise in sea level due to the storm’s winds, which can cause coastal flooding and damage.
See lessWrite a short note on temperate cyclones. How it impacts India ? (200 Words) [UPPSC 2023]
**Temperate Cyclones** Temperate cyclones, also known as extratropical cyclones, are large-scale weather systems that form in temperate regions, typically between 30° and 60° latitude. They are characterized by a well-defined low-pressure center and are associated with fronts—cold and warm air masseRead more
**Temperate Cyclones**
Temperate cyclones, also known as extratropical cyclones, are large-scale weather systems that form in temperate regions, typically between 30° and 60° latitude. They are characterized by a well-defined low-pressure center and are associated with fronts—cold and warm air masses that interact. These cyclones generally move from west to east due to the prevailing westerly winds and can bring significant weather changes, including heavy rainfall, strong winds, and varying temperatures.
**Impact on India**
In India, temperate cyclones primarily affect the northwestern and northeastern regions, especially during the winter months. They can lead to enhanced rainfall in areas like Punjab, Haryana, and western Uttar Pradesh, contributing to the winter crop season. However, they can also cause adverse weather conditions, such as cold waves and dense fog, which impact agricultural productivity and transportation.
Additionally, these cyclones can influence the Indian monsoon by altering wind patterns, thereby affecting precipitation distribution. The interaction between temperate cyclones and the Indian subcontinent is crucial for understanding seasonal climate variations, and monitoring these systems is essential for effective disaster management and agricultural planning.
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