Typhoon is a weather phenomenon that equivalent to a hurricane.
There are six main requirements for typhoon formation and development:
Sufficiently warm sea surface temperatures heated by the direct solar radiation.
Atmospheric instability,
High humidity in the lower to middle levels of the troposphere,
Enough Coriolis (projectile or air current) force to develop a low pressure center,
A pre-existing low level focus or disturbance,
And Low vertical wind shear.
About 85 to 90 percent of Pacific typhoons develop within the monsoon trough. Even there is a complete upper level condition and the required atmospheric instability, the lack of a surface focus will prevent the development of organized convection and a surface low. Tropical typhoon required the Vertical wind shear of less than 10 m/s (20 kn, 33 ft/s) between the ocean surface and the tropopause for tropical cyclone development.
Tropical cyclones in Asian called typhoon use warm, moist air. This warm, (high temperature) moist air (humidity) over the ocean rises upward from near the surface and causing a lower air pressure below. (Low density per unit measure of air). As the air flows from higher pressure to the air from lower pressure, joined together, the new air was created and becomes warm and moist and rises, too. This was first called tropical depression. But as this warm air continues to rise, the surrounding air swirls in to take its place. When the warmed, moist air rises and cools off, the water in the air forms clouds. The whole system of clouds and wind spins and grows by the ocean's heat and water evaporating from the surface. Storms that form north of the equator spin counter-clockwise. Because of Earth's rotation on its axis the Storms that form south of the equator spin clockwise. As the storm system rotates faster and faster, an eye of the typhoon forms in the center. It is very calm and clear in the eye, with very low air pressure. Higher pressure air from above flows down into the eye. And when the wind speeds reach 74 mph, the storm is officially a "tropical cyclone," or hurricane. Tropical cyclones or "Typhoon".
Typhoons travel with the general atmospheric currents and they cover great distances from the equator and travel westward, increasing size and intensity, As its move he get larger, usually about 10 to 15 miles or 16 to 24 kilometers per hour. The winds around the center are very strong, often reaching speeds of 150 miles or 240 kilometers per hour. The diameter can be as large as 300 miles or 480 kilometers wide.
The area of the northeast in Philippines is the most active place on Earth for tropical cyclones to exist.
The Philippines lies in the most tropical cyclone-prone waters on Earth, and rarely escape a year without experiencing a devastating typhoon according to meteorologist Jeff Masters of the Weather Underground.
Typhoon, when God gave me awareness for the things around me, this include typhoon, I been experience the effect of the typhoon many times in my life, the flood that reach over head, it so hard when there is a flood, you can‘t move without worry, I remember my experience, when our house submerge in the flood that reach our ceilings, I thanks we have second floor but our appliances that we bought from our saving has destroyed, it’s a economic sabotages for us, everything we save has gone, animal and property, I know all of us has been a victim of typhoon and we can’t do nothing about it, it’s a natural phenomenon, on the other hand, we are the one to be blame for the losses of our property, not the typhoon, God gave us the things for good, like trees and rain but because of what we are doing in our environment like throwing of trust in a wrong place, sitting home in a wrong place that suppose to be a way for the water to go freely. cutting trees without control, trees protect the land from erosion or land slide, also to a strong wind, trees in the forest are suppose to be a hindrance for the water to go down in the city, we know tree are gave by God to use but not too much, a saying say, one is enough, two is too much, that’s it! Because of our greedy heart, we become a victim of our own desired. Like what happened last Nov. 2013, a typhoon Yolanda and other typhoon causes too much floods, We must take care our nature; we can do nothing when the natures strike. until now people of the Philippines and other countries still recovering from this typhoon.
Sources:
http://en.m.wikipedia.org/
http://spaceplace.nasa.gov/
http://en.m.wikipedia.org/
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