Where are tropical storms formed Flashcards
What is a tropical storm?
Huge, powerful storm that develop in tropics. Have different names for different areas
What do they call tropical storms in the USA and the Caribbean?
Hurricanes
What do they call tropical storms in South-east Asia and Australia?
Cyclones
What do they call Tropical storms in Japan and the Philippines?
Typhoons
What is the Coriolis affect?
The rotation of the earth affecting the wind
Where do tropical storms form?
In the Tropics - to the North and South of the Equator. No tropical storms at the Equator.
- Only form over warm oceans (above 27 degrees)
- Form in Summer and Autumn
- 5-15 degrees North and South of the equator where the coriolis effect is high. Equator has 0 spin
- Intense heat makes air unstable causing it to rise rapidly
How does the Global atmospheric circulation affect tropical storms?
- Unstable rising air in equatorial regions (where Hadley cells join together) provides ideal conditions as the air rises and condenses causing storm clouds to form
- Trade winds are responsible for most of the east-west storms. Winds caused by air flowing over Earth’s surface form sub-tropical high-pressure belts to the equatorial low-pressure belts