Why is there a lot of wind in the Antarctic and how windy is it in the North Pole

The main factors that affect the wind on Earth are: horizontal pressure gradient, geostrophic deflection force, and frictional force. Among them, the horizontal pressure gradient is the key to the formation of the wind, which affects the strength of the wind, the geostrophic deflection force affects the direction of the wind, and the frictional force weakens the speed of the wind.

The Antarctic region is cold all year round, and the polar high pressure is strong, and the pressure difference between the pressure and the subpolar low pressure is large, so the horizontal pressure gradient force is large, and the polar easterly wind is strong. In addition, due to the icy plateau of Antarctica, the terrain is flat and smooth, and there is no vegetation on the surface, the friction is small, and the wind force basically does not weaken, so the wind in Antarctica will only blow stronger and stronger.

Wind is caused by a difference in air pressure in the horizontal direction (horizontal pressure gradient). The Antarctic continent is the coldest place in the world, with the world's strongest downdraft, which forms the world's most powerful cold high pressure, causing a huge horizontal pressure difference between the Antarctic continent and the surrounding areas, so there are three most prominent characteristics of the Antarctic climate: cold, arid, and the other is strong winds.

The windy Antarctic region is mainly located in areas other than the South Pole, which is located in the polar easterly belt. In addition, there is a large area of ice cover on the surface of Antarctica, there is no vegetation, and there is little friction. The wind speed is very high.

On both sides of the earth, of course, the wind is strong, and there are no trees on the mountains in Antarctica, so the wind is very strong. Just like the deserts on the earth, the deserts are not too big!

Due to the thermal force, the thermal expansion and contraction of the air will form a cold high pressure and a hot low pressure. Because the South Pole is located in the polar region, far away from the direct sunlight point, there is a small amount of solar radiation all year round, so a cold high pressure is formed. However, there is a subpolar low pressure zone around 60 degrees Celsius, and the air flows from high pressure to low pressure, so strong winds are formed.

Antarctica is also known as the plateau continent, the terrain is flat and open, and the underlying surface is single, so the friction of the air is small, resulting in strong winds.

Because there is a high air pressure, wind is formed.

Why is it so cold in winter? Why are mountains cooler than plains?

BecauseGeographical locationFar from the equator, the sunshine hours are short, which is why the windy conditions accompany the excavationBoth the North and South Poles are located in the polar easterly belts, but they have different wind directions. Specifically: 1. Antarctica:

Southern HemisphereGeostrophic deflection forceThe easterly easterly wind to the left is biased to the south by the geostrophic deflection force as it advances, forming a northeasterly wind blowing from the northeast to the southwest. 2. Arctic:Northern HemisphereThe geostrophic deflection force is to the right, and when the easterly wind advances, the reed core is biased to the north, that is, the southeast wind blowing from the southeast to the northwest.

The wind coming from the polar region (north) near 60 degrees north latitude comes from the polar high pressure zone, and the air pressure is high. Near 60 degrees north latitude is the subpolar depression zone, which is formed by the convergence of two air currents. One from the south is fromSubtropical high pressure zoneof the prevailing westerly winds.

To the north is a polar easterly wind from the polar high pressure belt. Due to the low temperature in the polar regions, a large amount of cold air shrinks and sinks into the polar high pressure belt, and the horizontal pressure gradient force is large, especially the summer pressure is higher than the subtropical high pressure belt in the south, so the power of the polar easterly wind is greater, and it is also higher than the prevailing westerly wind on the south side of the subpolar low pressure belt.

<> Antarctica: The windiest region in the world.

Known as the Seventh Continent, Antarctica is the last continent on Earth to be discovered and the only one uninhabited by indigenous people. The total area of the Antarctic continent is 13.9 million square kilometers, which is equivalent to the area of China and the Indo-Pakistani subcontinent combined, ranking fifth among all continents in the world. The entire Antarctic continent is covered by a huge ice sheet with an average elevation of 2,350 meters.

There are more than 220 kinds of minerals in Antarctica.

Antarctica is not only the coldest place in the world, but also the windiest region in the world. There are 300 days of high winds above level 8 per year, with an average annual wind speed of 7 seconds.

The maximum wind speed observed at the Mawson station in Australia was 82 m/s. The "westerly wind belt" of Antarctica is the most dangerous area for sea navigation, between 50 and 70 degrees south latitude, and low-pressure cyclones from west to east are continuous, sometimes as many as 6 to 7, with wind speeds of up to 85 kilometers per hour. The "descending winds" that move from the high poles of the Antarctic continent to the low-lying coastal areas are particularly strong, and the brightness of the rapid dust can reach up to 300 kilometers for seven hours, sometimes for several days.

Because the Antarctic is affected by the polar high pressure all year round, the air pressure near the surface is high, and the wind blows from the high pressure to the low pressure, and is greatly affected by the polar easterly, which produces strong winds. The surface of the Antarctic is covered with snow and ice, and the frictional resistance to the wind is small, and the wind is very strong. In addition, the wind is mixed with snow and ice, and it is dry, so the wind in Antarctica is very strong, and it is called "gale force".

1. The Antarctic is extremely cold, the air sinks when cold, forming high pressure, and the polar high pressure in the Antarctic is stronger than the high pressure elsewhere on the earth, and the high pressure is bound to flow to the low pressure area to form a wind, and the high pressure in the Antarctic flows to the subpolar low pressure in the southern hemisphere to form a gale;

2. Antarctic ice and snow cover, the original low-lying cover is thicker, resulting in the entire Antarctic continent is relatively flat, coupled with the smooth surface of ice and snow and small friction, so the wind resistance is small and the wind force is large;

3. The Antarctic Circle is almost entirely surrounded by oceans, and the completely flat ocean plays a role in fueling the wind in Antarctica.

This is because the central plateau of the Antarctic Continental Ice Sheet is a steep slope between the surrounding coastal areas.

The air of the inland plateau shrinks when it is cold, and the density increases, and this cold air flow slides sharply from the ice sheet plateau along the steep slope of the ice surface to the surrounding areas, and when it reaches the coastal zone, the terrain drops suddenly, causing the cold air flow to slide faster, so that a powerful destructive descending wind is formed. Due to the influence of the Earth's rotation, the northward flow of air is always deflected to the left, resulting in the formation of easterly gales along the coastal zone of the continent.

After years of meteorological observations, it has been confirmed that the winds in the coastal zone of the Antarctic continent are the largest, and the wind direction is easterly, with an average wind speed of 17 18 m s. In particular, the coasts of the East Antarctic continent have the strongest winds, with wind speeds of up to 40 to 50 meters per second, and are known as the "Storm Coast". According to the statistics of the 20-year Mawson Station in Australia, there are 300 days of wind leakage in the middle and Japanese halls every year with strong winds above level 8.

The Soviet Peace Station in Antarctica recorded 50-metre-second winds at the cost of the destruction of an observatory's house. The Dearville station in France has observed hurricanes reaching winds of up to 100 meters per second (three times the size of a Category 12 typhoon), the largest wind speed ever recorded in the world. This observation also came at the cost of the valuable strong wind gauge being blown away.

The wind in the Antarctic is stronger than that of the typhoon, and the Antarctic is known as the wind reservoir, which is the strongest and can blow the rusty chains as bright as new.

Both are about the same size.

Antarctic winds are generally up to 16 mega-typhoons, with an extreme record of 83 m s, slightly worse than the 2013 Haiyan gusts.

The winds in Antarctica are stronger.

The Antarctic region is known as the "wind reservoir". Antarctic winds often exceed Category 12 typhoons. On the Antarctic Peninsula, Ross Island and the interior of the Antarctic continent, wind speeds often reach more than milliseconds, and sometimes even meters.

A typhoon is a powerful cyclone that forms with the tropical ocean, but after the typhoon makes landfall, the power of the typhoon quickly weakens due to the relatively large friction on land and the lack of water vapor. Generally speaking, the intensity of a typhoon is to last for a few days. But strong winds in Antarctica are perennial, but in the Southern Hemisphere summer may be slightly weaker than in winter.

a. The climatic characteristics of the Antarctic region are:

Extremely cold, windy, scarce precipitation, also polar regions, the Antarctic region is much lower than the Arctic region with much lower annual average temperature; therefore a is incorrect;

b. The Antarctic region is the windiest and stormiest region in the world; Therefore b is correct;

c. In addition to the severe cold, the Antarctic region has little precipitation and strong winds, and is also known as the "white desert" and "world wind reservoir" on the earth; Therefore c is incorrect;

d. Penguins are representative animals of the Antarctic region; Therefore d is incorrect, so choose: b