Why is divergence important in the formation of a cyclone

Answer 1

Divergence is important in the formation of a cyclone because it is the process that helps create and sustain the low-pressure system at the center of the cyclone.

In a cyclone, air near the surface of the Earth spirals inward towards the center, leading to the formation of a low-pressure zone. This influx of air would cause the low-pressure system to quickly equalize and weaken. However, divergence acts as a balancing force by eliminating or reducing the air mass buildup at the center of the cyclone.

Divergence occurs when air moves away from a particular point. In the case of a cyclone, it happens at the upper levels of the atmosphere. As warm air rises near the center of the cyclone, it cools and spreads outwards at higher altitudes. This divergence of air helps maintain the low-pressure system by constantly removing air from the center, which prevents the cyclone from weakening.

Additionally, divergence promotes the upward movement of air, which leads to the formation of clouds and precipitation. The rising air cools and condenses, forming cloud bands around the center of the cyclone. This process further strengthens the cyclone and its associated severe weather conditions, such as heavy rainfall, strong winds, and thunderstorms.

Overall, divergence plays a crucial role in the formation and maintenance of cyclones, ensuring the continuation of the low-pressure system and the development of intense weather phenomena.