Why do typhoons mostly make landfall along the southeastern coast of our country?

According to the statistics of the past 30 years, there are about 7 tropical cyclones with an average of storm intensity or above that make landfall in China every year, and the landfall areas are mainly concentrated in the southeast and southern coastal areas of China. Why, then, do their landing areas exhibit such characteristics? To solve this problem, we have to start with the factors that govern their movement.

Their movement is mainly influenced by their own internal forces and factors in the environmental field. Since storms and typhoons are deep atmospheric vortices over a large area, the resultant force of their internal forces is to move them northwestward, and the stronger they are, the greater the internal force to move northwestward. There are many and complex factors affecting their movement in the environmental field, but the most important is the huge subtropical high in the northwest Pacific Ocean, which is wide and very deep, active between 10 and 40 degrees north latitude, with an axial direction of quasi-east-west, and moves north-south with seasonal changes, that is, gradually moving northward from spring to summer.

Summer and autumn are the seasons of tropical storms and typhoons, the subtropical high just happens to be active in the north of them, and the deep easterly airflow on its south side guides the tropical storms and typhoons to move westward, coupled with the northwest movement caused by the internal forces of tropical storms and typhoons, the combined effect of the two prompts tropical storms and typhoons to move westward to the northwest and land on the southeast and southern coasts of China. However, when the subtropical high is far east of the East China Sea and the Yellow Sea, if there is a tropical storm or typhoon active on its west side at this time, it is easy for them to move northward under the guidance of a stronger southerly airflow here, and turn to the northeast direction with or without landfall along the coast of China.

Another factor influencing the tendency of tropical storms and typhoons to move westward and make landfall along the southeastern and southern coasts of China is that the sea surface temperature gradually decreases from south to north, and their high-value areas are trending in a quasi-east-west direction, while tropical storms and typhoons have the characteristics of "warming movement", which is also conducive to their westward movement and landfall. The role of many other factors occurs under a specific condition, so I will not list them all here.

Typhoons are also called hurricanes, typhoons formed in the western Pacific Ocean, hurricanes formed in the western Atlantic, and typhoon formation is related to wind belts, and typhoons can only form in the oceans at low latitudes. The trade winds are low latitudes to high latitudes, and the wind direction is westward. Therefore, half of the typhoons formed in the western Pacific Ocean made landfall along the coast of China.

Hurricanes are the same, forming in the Caribbean Sea, which also move from low latitudes to high latitudes, and the winds are westerly, so they all make landfall in the southern United States.

Because most of the typhoons are in the Pacific Ocean.

Typhoons can reach as far north as China to the Northeast region; In addition, inland Yunnan has also been affected by Typhoon Wheels, from the global geographical location, the western North Pacific is the most typhoon-prone sea area, in the typhoon may be raging in the area, we must pay attention to travel safety.

The northernmost words have been to the Northeast, and even Yunnan was affected at that time; The deepest has been to the northwest of Wuhan.

The northernmost can reach the north-central region of China; The deepest can reach the Yunnan region of China.

Typhoons need to absorb water vapor to sustain themselves, and after landfall, they cannot collect water vapor from the ocean system, and the rain clouds slowly weaken and disappear as the precipitation decreases.

It should be that the typhoon is formed from the tropics and then drifts to the interior, and if the typhoon reaches the interior, it will be planted.

It is not as good as these reductions of mountain trees.

I remember that there was a typhoon in Chongqing that passed over the sky, but it was not as powerful as the coastal area.

It doesn't always blow to land.

To put it simply, the tropical ocean surface evaporates a large amount of water, the water vapor rises, so that the low air pressure is low, the surrounding air is supplemented and the ocean surface moisture continues to evaporate and rise, forming a continuous updraft, plus the rotation of the earth, there is a great eccentric gravity, causing the air flow to become a large rotating cyclonic cloud, generally just formed when it is a tropical storm, because of the operation process, the intensity is reduced, become a typhoon, the general performance is, with a large amount of rainfall and strong winds, the cyclone center of the typhoon has the largest wind.

After being heated, the ocean water evaporates into a gaseous state, and the air flow moves upwards to form a low-altitude and low-pressure state, and the surrounding gases move closer to the center and continue to move upwards to form a cycle and generate a typhoon.

The lack of water vapor on land and the uneven resistance of the surface are not conducive to the movement of typhoons, and the typhoons that have been generated will slow down and reduce wind speed after landfall.

Nor can the surface be uneven and resistant.

Because the wind in the coastal area is relatively strong, and the sea level pressure in the coastal area is completely different from the pressure on the mainland, there will be a difference, and a typhoon will be formed.

There will be air convection before a typhoon occurs, and the temperature on the sea surface will definitely be very different from the temperature of normal life, and it will not be the same.

Because there will be a big difference, and sometimes there will be some strong air convection, so a related typhoon will form at this time.

Introduction: Many people don't know why coastal cities are prone to typhoons, and they don't know how this is formed.

Many people don't know why coastal cities are prone to typhoons, because the water content of the seaside is relatively large, and if the weather changes, it is easy to form a typhoon. When some people see that a typhoon is about to occur, they must also make appropriate changes, learn to protect themselves and their families, and usually adjust some of their own states so that they can face it better. If you usually see a typhoon, you should also properly avoid yourself from being harmed, and you must transfer with your family in advance, so as not to let yourself have a bad situation, and you must learn to protect yourself at ordinary times.

If you live in the coastal area, you must also observe the local climate change appropriately, if the local climate change is relatively sudden, you should also adjust appropriately, do not let yourself have this situation to make an appropriate overall change, some people will always have some uncomfortable phenomena when doing things, at this time must also be properly adjusted, to protect the safety of the family.

People who live in the coastal area must always observe the changes in the weather, and if the weather is about to have a typhoon, they must also properly protect their families and take them to move out in time. If you find that there is a typhoon coming, you must learn to transfer in advance, some places are changing rapidly, you must learn to observe the local climate, do not let your life be affected, you must protect yourself and your family well, you must make an overall adjustment appropriately, if you always feel uncomfortable, you can also do an overall change appropriately, to help yourself change a living environment. People who live in coastal cities are prone to typhoons, so they must learn to adjust well at this time.

Because typhoons form on the surface of the sea, coastal cities are susceptible to typhoons.

Because coastal cities can rise and fall at high tides and have a high climate change, they are prone to typhoons.

Because there are currents in the ocean, typhoons are easy to form through the action of the sea breeze, and surrounding cities are particularly susceptible.

Generally speaking, the car is rotten, and the occurrence of a typhoon needs to meet the following basic conditions:

1. There should be a sufficiently broad tropical ocean, this ocean surface is not only requiredThe surface temperature of the sea water should be higher, and in a layer of water at a depth of 60 meters, the water temperature exceeds this value.

Before the formation of typhoons,There must be a weak tropical vortex beforehand

3. It should be large enoughThe deflection force of the rotation of the Earth, due to the geostrophic deflection force at the equator.

is zero, and gradually increases towards the poles, so the typhoon occurs about 5 latitudes away from the equator.

4. Above the weak low pressure, the difference between the wind direction and wind speed between the high and low altitudes should be small

Causes of typhoons.

It is known to have developed from disturbances within the tropical atmosphere. In the tropical ocean.

, the sea surface is heated by direct sunlight.

When it rises, the sea water is easy to evaporate into water vapor and disperse in the air, so the air temperature and humidity on the tropical ocean are high.

This kind of air expands due to high temperature, resulting in a decrease in density and leakage, and a decrease in mass, and the wind near the equator is weak, so it is easy to rise, convection occurs, and at the same time, the surrounding colder air flows in and replenishes, and then rises, and so on, and so on, and finally the whole air column is higher temperature, lighter weight, less dense air, which forms a low pressure.

However, the flow of air is from high pressure to low pressure, just as water flows from high to low, and the air at the higher pressure around it will flow to the lower pressure, and wind will be formed.

In summer, the southeast trade winds in the Southern Hemisphere cross the equator and turn into the southwest monsoon as the direct sunlight shifts northward from the equator.

Invasion of the Northern Hemisphere.

When it meets the northeast trade winds in the northern hemisphere, the squeezed air rises, increasing convection, and because the southwest monsoon and the northeast trade winds are in different directions, they often cause fluctuations and vortices.

The convergence caused by the meeting of the southwest monsoon and the northeast trade winds continues with the original convection, causing the vortex that has formed as a depression to continue to deepen, that is, the surrounding air accelerates the flow towards the center of the vortex, and the faster the inflow, the greater the wind speed.

It is called a tropical storm when the maximum wind speed near the surface reaches or exceeds the meter second.

If it is stronger, when it reaches meters and seconds, it will be called a typhoon.

Typhoons can only be formed when the water temperature is above 26 degrees Celsius, and the sea temperature in the southeast coastal areas of our country gradually begins to rise at the beginning of summer, and if the atmospheric conditions are met, it is easy to form a tropical depression, and if it continues to develop, it will become a tropical storm, a strong tropical storm, a typhoon, a strong typhoon, and a super typhoon. After becoming a tropical cyclone, under the influence of the guiding airflow, the typhoon's own dynamics and the geostrophic deflection force, it will go westward or rough back to the northwest (among them, there is a special path for the bridge), and the southeast coast of China is located on the west coast of the northwest Pacific Ocean, so it is easy to encounter typhoons.

The eastern region is prone to typhoons because the eastern provinces are located on the west coast of the Pacific Ocean and are susceptible to monsoons.

Why are the eastern provinces prone to typhoons? Because the Eastern Province is facing the Pacific Ocean where the sea and land meet, especially the southern ocean, it is easy to form tropical cyclones. The atmospheric circulation in the air is more intense, so it is prone to typhoons.

I think the eastern part of the continent is susceptible to wind, and it is likely that it has something to do with the rotation of the earth, not only in eastern Eurasia, but also in the eastern part of the American continent (called hurricanes in the United States). In South America, the west of the Andes Mountains (mainly Chile and Peru) is very dry, and the east of the mountains in Brazil has a lot of rain, also because the humid air from the sea is mostly from east to west.

Typhoons are generally formed from the sea, generally coastal areas will often suffer from typhoon strikes, China's coastline is very long, especially in the eastern coastal areas, often disturbed by typhoons, every year in summer, that is, the season when typhoons are easy to form, typhoons cause great losses to China's coastal areas every year.

This is because the Taiwan socks are generated in the Pacific Ocean east of the Philippines. The three major routes to the west, northwest and north respectively landed on the Indochina Peninsula, the southeast coast of China, and the Rishishiben. The most paths are in the northwest direction, and the provinces with the most landings are noisy:

Hainan, Guangdong, Fujian and Zhejiang provinces.

Because typhoons blow from the west to the east, the chances of typhoons in the eastern provinces are greater.

Hello, Guangdong has a long coastline and many coastal counties and cities, so Guangdong Province is the most prone to typhoons. Hope it helps.

Because the eastern provinces are close to the Pacific Ocean, typhoons are tropical cyclones that form over the Pacific Ocean.

Because the temperature of the upper layer of the sea and the sea surface is very different in summer, strong air convection is formed, which forms a typhoon, which has a great impact on the places close to the Yuhe Sea. Therefore, in the coastal area, there will be a constant threat of typhoon annihilation through Hongchong.

Tropical cyclones that occur in the northwest Pacific (west of the date line), including the southern China Sea, are called "typhoons". Since typhoons are generated at sea, typhoons make landfall from the southeast coastal areas almost every year.

By the sea, there are many windy days along the coast.