Which of the following statements is are correct regarding tropical cyclones 1 It is a non frontal l...........

Geography and Environment (UPPCS) World climates

Which of the following statements is/are correct regarding tropical cyclones?

1. It is a non-frontal low-pressure system of synoptic scale developing over warm waters having organised convection.

2. The “eye”, is the central part of the system where the weather is normally calm and full of clouds.

3. The winds blow counter-clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.

Select the correct answer using the code given below:

2 only

1 and 2 only

1, 2 and 3

2 and 3 only

Tropical cyclones :

Tropical cyclones are low pressure systems that form over warm tropical waters. They typically form when the sea-surface temperature is above 26.5°C.
Tropical cyclones can continue for many days, even weeks, and may follow quite erratic paths. A cyclone will dissipate once it moves over land or over cooler oceans.
A more technical de fi nition of a tropical cyclone is: A non-frontal low-pressure system of synoptic scale developing over warm waters having organised convection and a maximum mean wind speed of 34 knots or greater extending more than half-way around near the centre and persisting for at least six hours.
A tropical cyclone is a rapid rotating storm originating over tropical oceans from where it draws the energy to develop.
It has a low-pressure centre and clouds spiraling towards the eyewall surrounding the “eye”, the central part of the system where the weather is normally calm and free of clouds. Its diameter is typically around 200 to 500 km, but can reach 1000 km.