The influence of the winter monsoon on the climate, the characteristics of the winter climate

The source of the winter winds is in the Siberian region of Mongolia, and it is a high pressure!

China's winter monsoon generally goes to the northwest wind!

The northwesterly wind southward will bring a significant cooling to the southern region, as well as rain and snow! The cold wave in winter in our country is caused by the winter wind!

A cold wave is a strong cold air from the north and is a severe and catastrophic weather process. The meteorological department stipulates this:"Due to the invasion of cold air, the temperature drops sharply by more than 10 in 24 hours, and the minimum temperature on this day is below 5, which is called a cold wave.

In the middle and lower reaches of the Yangtze River, strong cold air moves southward, causing the temperature to drop by more than 10 within 48 hours, also known as a cold wave.

Most of the cold waves that invaded our country came from northern Siberia and the Mongolian plateau. In these areas, there is very little solar heat in a year. Especially in winter:

The days are short, but the nights are long, so that the air is constantly getting colder, the air is getting denser and the air pressure is getting higher and higher. When the cold air accumulates to a certain extent, it will erupt southward on a large scale under the guidance of the upper-level northwest airflow, forming a cold wave.

When the cold wave passes, it is often accompanied by northerly winds of 6-8 degrees, causing the temperature to plummet along the way and frost occurs. In the north, it can also cause sandstorms, which have a greater impact on agricultural production.

China's winter monsoon originates from the cold high pressure in Siberia, Mongolia. In the Northern Hemisphere, the wind radiates outward from the center of high pressure in a clockwise direction, so the northwest wind is dominant in Northeast China, the north wind is the north wind in North China, and the northeast wind is the main wind in the south of the Yangtze River.

As the winter monsoon originates from the high latitudes of the land, it is cold and dry, and the temperature decreases from north to south. The eastern part of China is mostly northeast and southwest trending mountains, which is conducive to the southward movement of cold air. The only large mountain range in the east-west direction is the Qinling Mountains, so the temperature difference between the southern slope and the northern slope of the Qinling Mountains is large, which is the dividing line between the north and the south in the eastern region of China.

In the north, the average temperature in January is below 0°C, and the rivers will freeze, while in the south, the average temperature in January is above 0°C, and the rivers will not freeze.

The climate in winter is characterized by cold and dry weather. In the north, in the cold winter, ice and snow, many animals in nature have returned to their nests and entered a "dormant" state of hibernation. Even in the south, because of the cold weather, short days and long nights, most people relatively reduce outdoor activities, go to bed early and get up early; Usually, add clothes and quilts to avoid the invasion of cold waves.

Therefore, in winter due to the cold climate, nephritis, pyelonephritis.

Enuresis, urinary incontinence, edema and other diseases caused by wind and cold are easy to ** or aggravate. Winter is dominated by cold, if people can not add clothes and quilts in time, it can make people's resistance decrease, the function of the heart, stomach, lungs and other organs, and even cause tracheitis, stomach pain, coronary heart disease.

**, make colds, joint pain, cough, rheumatoid arthritis.

Diseases such as high blood pressure occur or worsen.

Temperate monsoon climate zone with northerly winds prevailing in winter.

The temperate monsoon climate is characterized by the following:

1. High temperature and rain in summer: In summer, the sun altitude angle increases, the days are long, the temperature is high, and the southeast monsoon blowing from the tropical ocean brings abundance.

2. Cold and dry winter: the average temperature of the coldest month is below 0 degrees Celsius, and the winter is cold, which is caused by the high local latitude, close to the source of the winter wind, and the low and flat terrain in the west and low in the east, which weakens the winter monsoon.

Temperate monsoon climate.

The temperate monsoon climate is located between the largest continent, the Asian continent, and the largest oceanic Pacific Ocean, and the thermal properties of the sea and land are significantly different. In summer, the Eurasian low pressure is connected, the subtropical high over the ocean extends westward and northward, and the southeast monsoon emitting from the North Pacific subtropical high brings abundant precipitation. The northwest monsoon emitted by the strong Mongolian high pressure in winter affects the region. Because the wind direction shear meets the requirements of the monsoon, it is a monsoon climate.

The temperate monsoon climate occurs on the eastern coast of Eurasia at latitude around 35° 55°N, including northern and northeastern China, most of Korea, northern Japan, and part of the former Soviet Far East.

In winter, it is affected by the northerly winds from the high-latitude inland, and the polar continental air mass prevails, which is cold and dry. In summer, under the influence of polar ocean air masses or denatured tropical ocean air masses, east and southeast winds prevail, and the rain and heat are in the same season. The annual precipitation is about 1,000 mm, and about two-thirds of it is concentrated in summer. With the increase of latitude, the temperature variation in winter and summer increases correspondingly, while the precipitation gradually decreases.

The temperate monsoon climate has hot and rainy summers and cold, dry winters. The temperate monsoon climate has winter temperatures below 0 degrees Celsius and the most rain in summer. The four seasons are distinct, the rain and heat are at the same time, and the non-periodic changes in the weather are also the main characteristics of the temperate monsoon climate.

The climate characteristics of temperate climate types are mainly humid (the North China Plain and the Northeast Plain of China are semi-humid), so the temperate broad-leaved forest landscape is more commonly developed (the North China Plain and the Northeast Plain of China are forest-steppe landscapes), but there are some differences.

Temperate monsoon climate zone with northerly winds prevailing in winter. The reason is that the Asian high pressure forms in northern Asia in winter, and the wind blowing southward from the Asian high pressure is a northerly wind, mainly a northwest wind.

The temperature distribution in winter in China is characterized by a large temperature difference between north and south, and the temperature is lower the further north you go. The distribution of summer temperature in China is characterized by the general high temperature in the north and south.

1. Characteristics and reasons.

The characteristics of winter temperature distribution in China are as follows: the temperature is lower in the north and the higher in the south; There is a large temperature difference between the north and the south.

Reasons: 1. In winter, the sun shines directly on the southern hemisphere.

The noon sun in the north is smaller than in the south, and the day length is shorter than in the south.

There is less heat than in the south. 2. The winter monsoon moves southward, passing through the northern region first.

In the process of the southward movement of the winter monsoon, the force gradually weakens due to the obstruction of many mountains, so the temperature difference between the north and the south in winter is large.

2. General law.

The climate is complex and diverse, which is one of the main characteristics of China's climate. China's vast territory, spanning many temperature zones and dry and wet regions, coupled with China's complex topography and disparity in terrain, has increased the complex diversity of China's climate. There is a large difference in temperature between the north and the south in winter, the south is warm, and the further north you go, the lower the temperature.

In summer, high temperatures prevail in the north and south.

The influence range of the winter monsoon --- except for the Qinghai-Tibet Plateau, the Yunnan-Guizhou Plateau, and the Sichuan Basin, most of the areas north of the Nanling Mountains in China will be affected by the strong winter monsoon. The area of influence of the summer monsoon --- east and south of the line of the Daxing'an Mountains, Yinshan, Helan Mountains, Bayankala Mountains, and Gangdis Mountains. The area in China that is not affected by either the winter monsoon or the summer monsoon is the cracked mold of the northern Tibetan plateau ---.

The monsoon is a large-scale convective phenomenon caused by factors such as land and sea distribution, atmospheric circulation, and continental topography, with a one-year cycle. Asia is the most famous monsoon region in the world, and its monsoon is characterized by the existence of two main monsoon circulations, namely the northeast monsoon in winter and the southwest monsoon in summer. Generally speaking, November to March of the following year is the winter monsoon period, June and September are the summer monsoon period, and April May and October are the transition period between summer and winter monsoon.

However, the seasons vary from region to region, so the division of the monsoon is not exactly the same.

The monsoon has a wide range of activities, and it affects 1 4 of the Earth's area and 1 2 people's lives. The western Pacific Ocean, South Asia, East Asia, Africa and northern Australia are all areas of significant monsoon activity, especially the Indian monsoon and the East Asian monsoon. The Pacific coast of Central America also has a small monsoon zone, while Europe and North America have no distinct monsoon zone, with only some monsoon trends and monsoon phenomena.

Arabia, on the other hand, has a tropical desert climate and is not part of the monsoon climate zone.

The monsoon climate is found on the east coast of the continent, the tropical monsoon climate is only found in Indochina and the Indian Peninsula in Asia, and there is no monsoon climate in Europe and Africa.

There are three implications:

1.Winter is affected by the winter monsoon, cold and dry; Affected by the summer monsoon, the summer is warm and humid, and the rain and heat are at the same time, and the seasonal changes are obvious.

2.The cooling precipitation brought by the winter monsoon can reduce agricultural pests and diseases in the coming year; Precipitation brought by the summer monsoon eases drought and irrigates farmland.

3.In winter, the winds are strong and the cold wave invades the south, which will freeze many crops to death, make the infirm sick, and may freeze animals and even people to death; In summer, tropical cyclones bring strong storms and storm surges, threatening marine workers, fish raft farmers, seawalls and river embankments, heavy rains can cause reservoirs, inland river water levels to skyrocket, landslides, mudslides, etc. In summer, heavy precipitation brought by the monsoon can lead to flooding, endangering people's production and life.