Explanation and Facts of Wind and a Hurricane as a Form of Hydrometeorological Disaster
Explanation and Facts of Wind and a Hurricane as a Form of Hydrometeorological Disaster.
Reporting from Weather and Climate (2018), the wind is moving air. The movement of the wind is caused by several things. One of them is because the earth rotates or rotates. Air also moves because of the difference in air pressure around it. The wind flow comes from a place with high air pressure to a place with low air pressure.
The occurrence of the wind is influenced by the rotation of the earth along with the heating of an area by the sun. There are several properties of the wind:
1. The wind has a very different wind speed from one place to another, and from time to time.
2. Wind has properties that can cause pressure on a surface that opposes the direction of the wind.
3. Wind also has the property of accelerating the cooling of a hot object.
Wind is invisible to the eye Due to the small number of particles, there is no reflected light. So in the absence of light, nothing can be reflected into the air into your eyes.
There are several types of wind, here's an explanation.
1. Land breeze and sea breeze
Land breezes and sea breezes occur due to differences in the nature of land and sea in absorbing and releasing solar thermal energy. The existence of a land breeze occurs because the heat energy absorbed by the earth's surface throughout the day will be released more quickly by the land. Meanwhile, in the ocean, heat energy is in the process of being released into the air.
2. Mountain Wind and Valley Wind
Valley breezes occur when the sun rises. The top of the mountain is the area that gets heat first and during the process, the slopes of the mountain get more heat energy than the valleys. This condition causes a temperature difference between the two. Hot air from the mountain slopes rises and is replaced by cold air from the valley. As a result there is a flow of air from the valley to the mountain.
3. Hurricane/Whirlwind
A hurricane/whirlwind is also known as a cyclone, which is a strong wind that comes suddenly, has a center, moves in a spiral like a spiral to touch the earth's surface and disappears in a short time (3-5 minutes). The average wind speed ranges from 30-40 knots. This wind comes from Cumulonimbus (Cb) clouds, which are dark gray and towering clumpy clouds.
4. Monsoon Wind
Monsoon winds are winds that blow periodically (at least three months) and the pattern will be opposite from one period to another.
Well, how about the fact that a tornado occurs, it is known that tornadoes can cause severe damage if they occur in densely populated settlements. Tornado wind speeds can reach 40 to 50 km/hour. This wind touches the earth's surface and will disappear after 3 to 5 minutes.
Usually, a hurricane forms some time after there are signs of dark skies, black thunderstorm clouds, and the sudden appearance of a funnel from the clouds. What Causes Tornadoes? Tornados occur because of the difference in air pressure so that the air pressure forms a vortex in the weather system.
There are 3 stages of hurricane formation, namely,
1. the growing phase
The growing phase is characterized by the presence of air currents that rise upwards with strong pressure, in the clouds. At this stage, the water droplets and crystals cannot yet become rain because they are still being held back by rising air currents.
2. The adult phase
The adult phase, rain begins to fall and causes friction between rising and falling air currents. When the air currents rise and fall, they create a shear current that rotates and forms a vortex. The longer, the air currents will be faster and form a cyclone that touches the earth's surface.
3. The extinct phase.
Furthermore, in a whirlwind occurred. Then in the final phase, namely the extinction phase, the air mass will expand throughout the cloud, then stop, and the hurricane can end.
Well, that's an explanation of a Hurricane as a form of hydrometeorological disaster.
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