User:MARILOULOBIS

Digital Typhoon: Life of a Typhoon - Definition of a Typhoon (Tropical Cyclone), Longevity Typhoons, and Relationship with an Extratropical Cyclone. The Birth and Death of Typhoons (Tropical Cyclones) The Definition of Typhoons (Tropical Cyclones) and Its Birth Typhoon is defined as a tropical cyclone with the maximum wind of 34 knots or higher. A tropical cyclone with the maximum wind of less than 34 knots is called a tropical depression. Difference between two types of tropical cyclones are just if the maximum wind is less than or above the threshold of 34 knots.

The real meteorological phenomena, however, change continuously, so the distinction of two types of tropical cyclones is not clear. Moreover, the ground-truth measurement of the maximum wind speed around the center is not always possible, so it is not possible to decide automatically if a tropical cyclone is a typhoon or not. This decision making requires the skills of human experts and the collection of information.