The difference between typhoon and hurricane

The difference between typhoon and hurricane:

1. Typhoon is a tropical cyclone generated west of international date line and the North Pacific Ocean. Hurricanes are tropical cyclones generated in the Atlantic Ocean or the eastern North Pacific Ocean.

2. The measurement unit of typhoon is how many winds or meters per second, and the measurement unit of hurricane is how many kilometers, nautical miles or miles per hour.

3. Typhoons usually occur in China, Japan and South Korea, and hurricanes usually occur in the United States.

In terms of causes, typhoons and hurricanes have the same causes. They are all tropical cyclones developed on the basis of tropical depression. However, not all tropical cyclones can develop into typhoons or hurricanes. Strictly speaking, only tropical cyclones with the maximum wind force of 12 or above near the center of tropical cyclones are called typhoons or hurricanes.

Typhoon and hurricane are the strongest tropical cyclones, but they have different names because of different sea areas. They are called hurricanes in the Indian Ocean and Atlantic Ocean. Only the Pacific Northwest is called a typhoon.

The storms brought by typhoons often cause serious meteorological disasters. People named typhoons in order to forecast, study and distinguish them in different periods.

Tropical cyclone:

Tropical cyclone is a low-pressure weather system formed on the sea surface 3-5 latitudes away from the equator in tropical areas (such as the North and South Pacific, the North Atlantic and the Indian Ocean). Other movements are mainly influenced by large-scale weather systems such as Coriolis force, and eventually dissipate at sea, and then transform into extratropical cyclones or dissipate after landing.

Tropical cyclones landing on land will cause serious property or casualties, which is a kind of natural disaster. However, tropical cyclones are also part of the atmospheric circulation, which can bring the thermal energy and angular momentum of the earth's rotation from the equatorial region to a higher latitude. Different regions have different names for tropical cyclones. China, Taiwan Province Province of China, Japanese, Vietnamese, Philippine and other places along the western Pacific are used to calling local tropical cyclones typhoons, while Atlantic is used to calling local tropical cyclones hurricanes, and other places have different names for tropical cyclones. Meteorology, only tropical cyclones with a certain wind speed will be named "typhoon" and "hurricane".

Characteristics of tropical cyclones:

1, the biggest feature of tropical cyclones is that their energy comes from the latent heat released when water vapor cools and solidifies. Other weather systems, such as extratropical cyclones, are mainly caused by the temperature difference on the cold northern horizontal plane. Tropical cyclones will weaken and dissipate or become temperate cyclones after landing or moving to the surface of the ocean with lower temperature because of losing the energy provided by warm and humid air.

2. The airflow of tropical cyclone rotates around the center under the action of Coriolis force. Tropical cyclones rotate counterclockwise in the northern hemisphere and clockwise in the southern hemisphere.

3. Tropical cyclone is a low-pressure vortex that occurs on the surface of tropical or subtropical ocean, and it is a powerful and profound tropical weather system.

Negative effects of tropical cyclones

1. gale: hurricane-level winds are enough to damage or even destroy buildings, bridges and vehicles on land. Especially in areas where buildings are not reinforced, the damage is even greater. Strong winds also blow debris into the air, making the outdoor environment very dangerous.

2. Storm surge: As the water surface rises due to the wind and air pressure of tropical cyclones, coastal areas can be submerged, which is even more harmful if it is suitable for astronomical climax. Among all kinds of losses caused by tropical cyclones, storm surge is often the most deadly.

3. Heavy rain: Tropical cyclones will lead to continuous heavy rain. Heavy rain in mountainous areas may cause river flooding, mudslides and landslides.

Indirect damage

1. Disease: accumulated water caused by tropical cyclones and damaged sewers may cause epidemics.

2. Damage to infrastructure system: Tropical cyclones may damage roads and power transmission facilities. And hinder the rescue work.

Agriculture: Wind and rain may destroy fish and agricultural products, leading to food shortage.

4. Salt wind: The salt in seawater is brought to the land with the huge waves caused by tropical cyclones, which may cause crops to wither when attached to the leaves of crops, and may cause leakage when attached to cables.

Tropical cyclone prevalence areas:

1. Western North Pacific: including the South China Sea, and the affected areas include Chinese mainland, Hainan and Taiwan Province Province; The Philippines, South Korea, Japan, Vietnam and islands in the Pacific occasionally affect Thailand and Indonesia. Every year, tropical cyclones generated in the northwest Pacific Ocean account for one-third of the world. The coast of China is the place where tropical cyclones land the most in the world. Six to seven tropical cyclones land in the Philippines every year.

2. Eastern North Pacific

The second largest tropical cyclone producing area includes Mexico, Hawaii, Pacific island countries and, in rare cases, Baja California and northern Central America.

3. The North Atlantic includes the Caribbean Sea and the Gulf of Mexico. The number of generations varies greatly each year, ranging from one generation to twenty generations, with an average of about ten generations per year. It mainly affects the States along the east coast of the United States and the Gulf Coast, Mexico and Caribbean countries, and occasionally affects Venezuela and Canada. In 2005, Hurricane Vince landed in Spain with the intensity of tropical depression, which was the only Atlantic storm that landed in Europe on record.

4. The southwest Pacific mainly affects Australia and Oceania countries.

5. Northern Indian Ocean

Including the Bay of Bengal and the Arabian Sea, mainly produced in the Bay of Bengal. There are two peaks in the North Indian Ocean monsoon season: one is April and May before the start of the monsoon, and the other is 65438+ 10 and 165438+ 10 after the end of the monsoon. It affects countries such as India, Bangladesh, Sri Lanka, Thailand, Myanmar and Pakistan, and sometimes the Arabian Peninsula.

6. Eastern South Indian Ocean

Affecting Indonesia and Western Australia.

7. The western part of the South Indian Ocean mainly affects Madagascar, Mozambique, Mauritius, reunion island, Tanzania, Comoros and Kenya.