What are the characteristics of Antarctica? What are the characteristics of Antarctica s natural env

Antarctica. The climate is bitterly cold, with heavy snowstorms, dry air, and scarce precipitation. Due to the high latitudes of the continents, most of the continents are surrounded by thick sea ice for nearly 10 months a year, which hinders the vertical exchange between the atmosphere, oceans and continents, thus forming a unique climate.

The climate of Antarctica is neither oceanic nor continental, but a terrestrial ice climate. The climate is characterized by mean or extreme temperatures that are lower than anywhere else in the world, whether in cold or warm seasons. The coldest place in Antarctica is the inland plateau of the East Antarctic continent, with an average annual temperature of less than 50, which can be called the "cold pole" of the world.

The average monthly temperature on the Antarctic continent generally begins to decrease in March and gradually rises in October. The most significant feature of the vertical distribution of air temperature on the Antarctic continent is the perennial temperature inversion at the bottom, which tends to increase with altitude, and the temperature above a few hundred meters may differ by tens of degrees Celsius from the ground.

The most terrible weather on the Antarctic continent is storms, blizzards.

Antarctica is known as the "world wind pole", the ground prevails east-west winds, and the altitude above 1,000 meters above the ground is the northwest wind.

Inland, there is strong radiative cooling, and a large amount of cold air near the surface accumulates, and under the action of gravity and pressure gradient forces, the "Antarctic descending wind" with high wind speed and constant wind direction is formed.

The Antarctic climate is characterized by extreme cold, drought and strong winds.

Cold. Antarctica's climate is generally colder than that of the Arctic at the same latitude, making it the coldest region in the world. On July 31, 1983, Soviet scholars recorded a low temperature of minus 89 2 at Vostok Station, the lowest natural temperature recorded in the world.

Drought. The Antarctic continent is the driest continent on Earth and is known as the "White Desert". The average annual precipitation is 30.50 mm, and the further you go into the interior of the continent, the less precipitation you get, less than 3 mm near the South Pole. Precipitation in Antarctica is almost all snow.

Gale. Strong winds blow in Antarctica all year round, with maximum wind speeds of about 100 meters per second, nearly three times higher than the Category 12 gale of 33 meters per second. Gale can easily throw up more than 200 kilograms of large oil drums, which can be thrown thousands of meters away, and it is even more difficult to overturn the planes parked at the airport.

High winds are extremely common along the Antarctic coast, such as the Denison headland, which has 340 days of storms a year, making Antarctica a veritable "storm kingdom".

Antarctica, known as the Seventh Continent, is the last continent on Earth to be discovered and the only one uninhabited. 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, making it the highest continent in the world.

There are more than 220 kinds of minerals in Antarctica.

Cold, cold, too cold, really cold.

Antarctica's climate is unusually cold, covered with ice and snow all year round, and it is a cold ice field climate, known as the world's wind reservoir, cold pole, and dry pole.

The average annual temperature of the whole continent is minus 25, the average temperature of the inland plateau is about minus 56, and the extreme minimum temperature has reached minus, making it the coldest land in the world. The average wind speed of the whole continent is meters per second, the coastal ground wind speed often reaches 45 meters per second, and the maximum wind speed can reach more than 75 meters per second, making it the windiest and windiest region in the world. Precipitation is less than 250 mm in most areas, and only on the continental fringe it is about 500 mm.

The average annual precipitation of the whole continent is 55 mm, the annual precipitation in the interior of the continent is only about 30 mm, there is almost no precipitation near the pole, the air is very dry, the polar high pressure is entrenched all year round, and there is little water vapor, but because the temperature is below zero all year round, the snow and ice do not melt. It is known as the "White Desert".

By looking at the thickness of the ice layer that forms there each year, we can get an idea of how polluted the Earth's atmosphere is. Because the strong westerly winds surrounding the Antarctic continent block the opportunity for the ozone layer to communicate with the outside world, the ozone layer is particularly thin and ultraviolet at the turn of winter and spring in this region because the sunlight in the air causes the chlorofluorocarbons in the air to combine with the ozone molecules and decompose the ozone layer. The situation had worsened since the 1980s, when large industrial emissions of CFCs were being emitted worldwide.

However, some scholars have a different view, since the westerly wind is blocked, and the industrial countries are mainly in the northern hemisphere, why HCFCs have the most in the south pole, and they believe that they are the masterpiece of the weakening of the earth's magnetic field and the solar wind.

Antarctica, the continent that surrounds Antarctica, is one of the seven continents of the Earth. Located at the southern tip of the earth, it is surrounded by the Southern Ocean, and is bordered by the Belinsgauching Sea, the Ross Sea, the Amundsen Sea and the Weddell Sea. Antarctica is composed of continents, continental edge ice, and islands, with a total area of 10,000 square kilometers, of which the continental area is 10,000 square kilometers, the continental margin ice area is 10,000 square kilometers, and the island area is 10,000 square kilometers.

The whole territory is a large plateau with an average altitude of 2,350 meters, which is the highest average altitude in the world.

The continent is almost entirely covered by glaciers, accounting for more than 80% of the world's modern ice cover. Continental glaciers stretch from ** to the sea, forming a huge Ross ice barrier, and icebergs float in the surrounding sea.

Only 2% of the entire continent is free of snow and ice all year round, and plants and animals are able to survive. The climate is very cold, with extreme minimum temperatures reaching the year). Wind speeds generally reach 17 18 meters per second, and the maximum reaches more than 90 meters per second, making it the world's coldest land with the most storms and winds.

The average annual precipitation on the continent is 55 mm, there is almost no precipitation near the pole, and the air is very dry, which is called the "white desert".

In the Antarctic Circle, there are continuous polar days in the warm season and continuous polar nights in the cold season, and there are gorgeous arc-shaped aurora lights. Animals include penguins, walruses, sea lions, albatrosses, etc. Antarctic cod and largemouth fish are produced in the nearby oceans, and krill production is the largest in the world.

Minerals have been found in coal, oil, natural gas, gold, silver, nickel, molybdenum, manganese, iron, copper, uranium, etc., mainly distributed in the Antarctic Peninsula and coastal island areas.

Cold, dry, and known as the "White Desert".

<> Antarctica there are penguins, seals, Antarctic wolves, Antarctic skuas, Antarctic giant insects, etc.

1. Penguins: Mainly distributed in the Antarctic continent between 66 and 77 degrees south latitude, usually fish, shrimp and cephalopods in the sea.

for food. 2. Seals: Mainly distributed in the cold polar seas, with fish as the main food, but also eat crustaceans and cephalopods.

3. Antarctic wolf: Antarctic wolf has become sharp in the long-term evolution process and can easily tear food apart.

4. Antarctic skuas: The prey mainly includes fish and krill.

Sometimes, in pursuit of food, they will fly to the skies not far from the shore to maneuver with their prey.

5. Antarctic giant worm: also known as belt worm or ribbon worm, belongs to the phylum Neomorpha, often with mussels and crustaceans. for food.

The Antarctic continent is almost entirely covered by ice and snow, and there are many tall ice shelves, ice barriers and icebergs on the surrounding sea, and only 2 of the land is not covered by ice and snow all year round, which is known as the "oasis" of the Antarctic ice sheet and is the main habitat of Antarctic animals and plants. The average thickness of the Antarctic ice sheet is about 2400m, covering an area of about 13.9 million km2, accounting for more than 70% of the total land ice and freshwater on the earth. It is the coldest place in the world, with an average annual temperature of minus 25 and a minimum temperature of minus zero at the pole.

The Antarctic ice sheet began to form 26 million years ago and reached its current size 5 million years ago. After that, the Quaternary Ice Age was experienced, and the ice sheet expanded more than 1,000 km into the sea, occupying almost the entire continental shelf. About 10,000 years ago, as temperatures rose again, the ice sheets began to retreat.

In particular, in the past half century, due to the impact of global warming, the average summer temperature of the Antarctic Peninsula has risen by about one, resulting in an accelerated rate of melting of the Antarctic ice sheet. Since the 80s of the 20th century, the amount of ice in the western part of the Antarctic Peninsula has decreased by 20 percent, many ice shelves are gradually disintegrating and crumbling, icebergs are breaking away from ice shelves, and glacier fronts floating on the ocean are retreating at an accelerated pace. If the planet continues to warm, perhaps in a few hundred years, we will see the entire melting of the Antarctic ice sheet, the global sea level will be **60m, and all coastal countries will be affected.

The melting of the Antarctic ice sheet is sending us a strong warning that the trend of continuous global warming will not be stopped, and humanity is on the verge of extinction.

The Antarctic continent has a very cold climate, many violent storms and snowstorms, dry air, and little precipitation.

They are very cold, high winds, and scarce precipitation. The first is "very cold", Antarctica is the coldest region in the world, the average annual temperature of the entire Antarctica is only -25, and the average annual temperature of the inland plateau is only about -50, and Antarctica has measured the lowest surface temperature in the world.

Extremely cold, Antarctica's climate is usually colder than the Arctic at the same latitude, making it the coldest region in the world. Arid and the Antarctic continent is the driest continent on Earth and is known as the "White Desert".