How did Typhoon form?

Definition of Typhoon, Forming Conditions and Structure Analysis.

What is typhoon?

Typhoon (Typhoon) 是发生在Northwest Pacific和S海海域的强热带气旋. 当热带气旋中心附近最大持续wind speed达到 32.7 m/s (12)及以上时, 称为Typhoon .

The Four Conditions of Typhoon

• Extensive high temperatures.The temperature of the sea water requires more than 26.5°C and the depth of the warm water layer is more than 60 meters, providing sufficient water vapor and energy for the Typhoon.
• Strong enough toward.: 一般发生在Slat 5° 以上的海域, 赤道附近因地转偏 toward 力太小难以形成气旋性旋转.
• Initial disturbance: 如热带辐合带中的扰动云团, provides typhoon 胚胎.
• A weak vertical wind.High and low wind directionwind speed differences are small, so that heat is concentrated within a limited area.

Structure of Typhoon

• The Typhoon EyeCentral area, approximately 10 ~ 60 km in diameter, clear weather, weak wind force.
• The walls of the eyes. : The strong pair of streams around the Typhoon Eye, the storms are the strongest.
• The spiral rain.: Rain cloud bands with a spiral distribution outside.

Typhoon classification (China standard)