Why less trs in southern hemisphere

That said, the formation of tropical cyclone still hinges on other environmental factors. Under other very favourable conditions, tropical cyclones may still form in the vicinity of the Equator. Tropical Cyclone "Vamei" in December [1] was the first tropical cyclone on record formed within 1. Liu, and H. Kuo , Typhoon Vamei: An equatorial tropical cyclone formation, Geophys. Back to content.

Written by: CHAU Chun-yuen December The formation of a tropical cyclone requires a number of favourable environmental conditions and one of them is a suitable latitude. Figure 2 Moving air stream deflected to the left in the Southern Hemisphere. Air streams moving to the centre of low pressure following helical paths in the Northern Hemisphere.

An average tropical cyclone can travel about to miles a day, or about 3, miles before it dies out. In the northern hemisphere, tropical cyclones occur between June and November peaking in September. In the southern hemisphere, the season lasts from November to April but storms remain less common here than in the northern hemisphere.

More than one tropical storm can occur in the same ocean and region at once. Because parts of the planet are moving at different speeds yep , this has a profound effect on the Coriolis force.

The scijinks. It takes Earth 24 hours to rotate one time. If you are standing a foot to the right of the North or South Pole, that means it would take 24 hours to move in a circle that is about six feet in circumference.

Hop on down to the equator, though, and things are different. It still takes Earth the same 24 hours to make a rotation, but this time we are traveling the entire circumference of the planet, which is about 25, miles long. That means you are traveling almost miles per hour just by standing there. The Coriolis force is quite different at the equator than it is at the Poles. In fact, the magnitude is zero at the equator. I hope you didn't have lunch yet because I am about to throw a little math at you but don't worry, it isn't too bad.

If you think back to high school math class, the sine of 0 the latitude at the equator is 0 also. This is why there is no Coriolis force at the equator and why hurricanes rarely form near the equator. The Coriolis force is simply too weak to move the air around low pressure.

Air prefers to flow from high to low pressure. Typhoon Vamei which formed near Singapore on December 27, The answer given: It really is just a naming convention based on location. Community Bot 1. Then you can reformulate the quest as "Why are there no tropical cyclones in the southern atlantic basin? Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.

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