Causes of the formation of the summer monsoon in China The summer monsoon that affects our country m

The prevailing wind that changes the direction of the wind over a wide area and changes the direction of the wind with the seasons due to the difference in the thermal dynamics of the sea and land or the movement of the planetary wind belt with the seasons is called the monsoon. In general, the summer monsoon blows from the ocean to the land, and the winter wind blows from the land to the sea, and the characteristics of the weather and climate also change due to the change of wind. The monsoon region of the world is widely distributed, among which the Asian monsoon is the strongest and the largest.

Taking China as an example, in winter, the Asian continent radiative cooling is strong, the temperature is low, the air density is large, the formation of high pressure and its adjacent Pacific Ocean, the Indian Ocean, due to the large heat capacity of water, radiative cooling is not as strong as the continent, relatively speaking, the temperature is higher, the air pressure is lower, the pressure gradient points from the continent to the ocean, so the wind blows from the continent to the ocean, and the northerly wind prevails. In summer, the Asian continent radiative warming is strong, the temperature is high, the air density is small, and a low pressure is formed. Relatively speaking, the temperature is low, the air pressure is high, and the pressure gradient is directed from the ocean to the land, so the wind blows from the ocean to the land, and the southerly wind prevails. The monsoon has a great impact on the weather and climate of our country, and when the winter monsoon prevails, the climate is characterized by low temperature, dryness and little rainfall; When the summer monsoon prevails, the climate is characterized by high temperatures, humidity and rain.

In terms of the formation principle, the causes of the monsoon and the sea and land breeze are basically the same, but there are obvious differences. The sea and land breeze is caused by the diurnal change of air pressure between the sea and land, and the wind direction change is a one-day cycle, and the influence range is only in the coastal area, generally about 10 kilometers. The monsoon is caused by the seasonal change of air pressure between the sea and land, and the prevailing wind changes with the season, with a one-year cycle, a large scale and a wide range of areas.

How the monsoon is formed.

Winds that change significantly in direction throughout the year depending on the season are called "monsoons". For example, in the winter of our country, most parts of the country blow northerly winds, and in summer, southerly winds are blown, which are all monsoons.

Monsoons are formed mainly because of the difference in the specific heat of the oceans and continents. In summer, because the specific heat of the continent is small, the temperature of the continent is easy to rise after the sun, so the temperature is higher than that of the ocean, the temperature is high, and the air density is small, so a low pressure is formed on the land; On the other hand, high pressure forms over the cool oceans, so that the summer monsoon flows from the high pressure over the southern ocean to the continental depression. Therefore, in our country, the summer monsoon is southerly.

In winter, because the ground receives less solar heat and radiates heat into space, the continents are cooler, creating a cold high, while the oceans remain warmer, creating a warm depression. Therefore, the winter monsoon flows from the inland cold and high pressure to the warm low pressure of the southern ocean, and the northerly wind blows, which is the reason for the formation of China's monsoon climate.

In addition, in addition to the monsoon caused by the thermal difference between land and sea, the seasonal north-south movement of the atmospheric circulation wind belt on the earth will also form a monsoon phenomenon in some local areas, but the direction of the winter and summer winds of such monsoons is not completely opposite.

The impact of the monsoon climate on China's agricultural production is very significant, and it is this kind of summer monsoon that makes China's Yangtze River region a world-famous granary.

Resources.

Southerly winds blowing from the sea to the land prevail in summer.

The summer monsoon comes from the Pacific Ocean in the southeast and the Indian Ocean in the southwest, and is warm and humid in nature, and under its influence, precipitation generally increases, and rain and heat are in the same season. Under the influence of the winter monsoon in the interior of Asia, which is cold and dry in nature, most parts of China generally have less precipitation and low temperatures in winter, and the north is more prominent.

China is affected by the alternation of winter and summer monsoons, and is the most typical of the monsoon and the most significant monsoon climate in the world. Compared with other regions of the world at the same latitude, China has low winter temperatures, high summer temperatures, large annual temperature ranges, and precipitation is concentrated in summer, which is characteristic of continental climate. Therefore, China's monsoon climate is more continental, also known as continental monsoon climate.

Summary. Extended: The summer monsoon refers to the prevailing winds that blow from the ocean to the continent in the monsoon region in summer.

Due to the control of a huge thermal depression over the Asian continent in summer, there is high pressure over the ocean, and the air flow blows from the high pressure area to the low pressure area. The outbreak of the South China Sea summer monsoon marks the transition from winter circulation to summer circulation, and also indicates the arrival of the East Asian summer monsoon and the beginning of the rainy season in China.

The good answer is as follows: The answer is the Great Flat Ocean and the False Ocean of India. The boundary between the pre-monsoon and the non-monsoon area in China is the Daxingcha Jiao'an Mountains, Yinshan Mountain, Helan Mountain, Bayankala Mountain and Gangdis Mountain, and the summer monsoon affecting China includes the southwest monsoon from the Indian Ocean and the northwest monsoon from the Pacific Ocean, which is characterized by warm and humid. We refer to the areas where the summer monsoon is clearly affected as the monsoon zone.

The green grass is a real house, and the spring breeze is strong on horseback, cattle and sheep. The pine snow forest is fertile, and the four major geographical areas described by Longjiang Rice Grain Xiang are.

Extended: The summer monsoon refers to the prevailing winds that blow from the ocean to the continent in the monsoon region in summer. Due to the control of a huge thermal low pressure over the land of the Asian Arader in summer, there is high pressure over the ocean, and the air flow blows from the high pressure area to the low pressure area.

The outbreak of the South China Sea summer monsoon marks the transition from winter circulation to summer circulation, and also indicates the arrival of the East Asian summer monsoon and the beginning of the rainy season in China.

The proportion of all kinds of land resources in China is the least.

The proportion of various types of land resources in the total land resources in China is different, among which the grassland area is relatively wide, and the proportion of cultivated land is relatively small, and the proportion of cultivated land is relatively small, and the cultivated land area only accounts for the smallest proportion. Cultivated land Ha pro.

The top is the Inner Mongolia Autonomous Region and Heilongjiang Province.

The summer monsoon affecting China includes the southeast monsoon from the Pacific Ocean and the southwest monsoon, southwest monsoon and southeast monsoon from the Indian Ocean.

2.The summer monsoon refers to the prevailing winds that blow from the ocean to the continent in the monsoon region in the summer. Due to the fact that the Asian continent is controlled by a huge thermal depression in summer, there is high pressure over the ocean, and the air flow blows from the high pressure area to the low pressure area.

The outbreak of the South China Sea summer monsoon marks the transition from winter circulation to summer circulation, and also indicates the arrival of the dry monsoon in East Asia and the beginning of the rainy season in China.

Its activity can have an important impact not only on the Asian monsoon system, but also on circulation and weather in the Northern Hemisphere. The outbreak date of the South China Sea summer monsoon has become one of the key contents of the annual "Flood Season Climate Trend Consultation" in South China, and with the development of economy and agriculture, the South China Sea summer monsoon has been more and more highly valued by all countries in the world, especially the countries and regions around the South China Sea.

The summer monsoon affecting China mainly comes from the vast oceans in the east and southeast, and is dominated by warm and humid southerly winds.

The summer monsoon is a type of monsoon. In summer, due to the rapid rise in temperature after the continent is irradiated by the sun, an updraft is generated, and a low pressure zone is formed near the ground. At the same time, the ocean temperature rises slowly, and the airflow sinks, forming a high-pressure area. The summer monsoon is the summer monsoon when the air flow from the high pressure area to the low pressure area, where the air flow over the ocean to the land and bring with it abundant water vapour and cause rainfall. The summer monsoon is mainly distributed in the tropics and subtropics north of the equator.

The summer monsoon monsoon (also known as the monsoon) is a periodic wind that changes with the seasons and prevails with seasonal shear of more than 120 degrees. It mainly occurs in monsoon Asia (East Asia), West Africa, Guinea, and the northern coastal zone of Australia.

The specific heat capacity of seawater is much higher than that of land, so the cooling of land in winter and the warming of summer are faster and more pronounced than those of the ocean, resulting in temperature differences. When the air expands when heated, the density decreases and rises. And vice versa, so the air pressure on land is lower than in the ocean in the summer and vice versa in the winter. Therefore, the wind direction of the monsoon area in summer and winter will be opposite, and it can be divided into winter monsoon and summer monsoon.

The characteristics of the summer monsoon are that it controls the east and south of the first line of the Daxing'an Mountains, Yinshan, Helan Mountain, Bayankala Mountain, and Gangdisi Mountains in China in the summer half of the year (the hottest half of the year), and the force is relatively weak, the wind direction is northerly, warm and humid, bringing continuous rainy and high temperature weather.

The summer monsoon is a prevailing wind that blows from the ocean to the mainland in the summer in areas with a monsoon climate. In China, winter is mainly affected by the winter monsoon (northwest wind), while summer is mainly affected by the summer monsoon, that is, the wind blowing from the southeast sea. Of course, the timing of the arrival of the summer monsoon will vary depending on the region.

The closer you are to the southeast, the stronger the wind will be.

In the summer, there will be a strong tropical depression over the entire Asian continent, and there will be high pressure over the sea, and the wind of the high pressure will blow towards the low pressure area, so the wind will blow from the sea to the Asian continent. Among them, South China, Southeast China and other regions are mainly affected by the summer monsoon in the South China Sea. Generally, when the South China Sea summer monsoon breaks out, China's flood season is almost started, because once the summer monsoon becomes stronger, the precipitation will become more and more obvious.

[The main reason for the formation of the monsoon in China is: the seasonal variation of the thermal circulation between land and sea. In summer, the heat increase of the continent is more intense than that of the ocean, and the air pressure changes slower with altitude than over the ocean, so at a certain altitude, a horizontal pressure gradient is generated from the continent to the ocean, and the air is directed from the continent to the ocean, and a high pressure is formed on the ocean, and a low pressure is formed on the continent, and the air is transferred from the ocean to the continent, forming an air flow opposite to the direction of the upper altitude, constituting the monsoon circulation in summer.

In our country, it is the southeast monsoon and the southwest monsoon. The summer monsoon is particularly warm and humid.

In winter, the continent cools rapidly, and the temperature on the ocean is higher than on the land, so the continent is high pressure, and the ocean is low pressure, and the low-level air flow flows from the continent to the ocean, and the upper air flow flows from the ocean to the continent, forming a monsoon circulation in winter. In our country, it is the northwest monsoon and becomes the northeast monsoon. Winter winds are very dry and cold.

However, the degree of influence of land and sea is related to latitude and season. In winter, the influence of sea and land is great in the middle and high latitudes, and the center of cold and high pressure on land is at higher latitudes, and low pressure on the ocean. In summer, the low latitude of the sea and land has a great influence, the center of the thermal low pressure on land is southerly, and the position of the subtropical high over the ocean moves northward.

Location of land and sea and thermal differences.

First of all, let's talk about what is a monsoon: because continents and oceans heat and cool differently throughout the year, a wide range of winds between continents and oceans that change direction regularly with the seasons is called a monsoon.

The most fundamental reason for the formation of monsoons is the difference in the properties of the earth's surface and the difference in thermal response. Caused by factors such as land and sea distribution, atmospheric circulation, and continental topography, the phenomenon of opposite wind directions prevails in a wide range of winter and summer seasons with a one-year cycle. It is divided into summer monsoon and winter monsoon.

The location of our country: it is the largest continent in the southeast of the Eurasian continent, facing the western Pacific Ocean in the east, the Indian Ocean in the southwest, and the center of the continental plate in the west and northwest. In summer, the land heats up rapidly, creating a thermal depression, where warm, moist air is blown from the surrounding ocean to the center of the depression. This change in the prevailing wind direction in the opposite direction of winter and summer brought about a significant seasonal change in the climate, which formed the monsoon climate in China.

Specific winter monsoon: The cold high pressure formed in September, with its centers in Siberia and Mongolia. This creates a cold, dry northwest or northeast monsoon, which first reaches northern China and soon advances south into the Jianghuai basin and areas south of it. The winter monsoon strengthens month by month with the seasons.

The summer monsoon warms up rapidly on the Asian continent, forming a thermal depression with its center located west of the Tibetan Plateau. The warm and humid airflow radiated by the Pacific subtropical high penetrates from the southeast coastal area in the form of southeast or south monsoon to the north and the Hetao, and its climate is characterized by hot and humid rain with many thundershowers.

The summer monsoon affecting China comes from three sources: the first southwest monsoon originates in the southern Indian Ocean, forming a low-level jet stream in the Arabian Sea and passing through the Indian Peninsula to affect southwest and southern China; The second southeast trade wind, originating from northern Australia, crosses the equator and crosses the equator through Indonesia or the Malay Peninsula to form the equatorial convergence zone with the first airflow and the northeast trade winds in the northern hemisphere. The third stream originates from the North Pacific subtropical high, which is the southeast monsoon and the south monsoon that mainly affect eastern China.

It is formed by the movement process of the earth's "subtropical high pressure zone": in winter, the sun shines directly on the southern hemisphere, and the subtropical high is difficult to move, while most of China is controlled by low pressure, and the wind direction is inland to the coast; In summer, the sun returns to the Tropic of Capricorn, the subtropical high moves northward, and the wind direction in most parts of China is that the ocean blows inland.

Speaking of China's winter and summer monsoons are mainly formed by the difference in the thermal properties of sea and land, because the land warming and cooling are very drastic, so the land forms a thermal low pressure center in summer, and the ocean retains the subtropical high pressure belt, and the wind blows from the ocean to the land.