Seek a detailed explanation of the atmospheric part of Geography Compulsory 1

Knowledge summary1.composition and structure of the atmosphere; the composition of the lower atmosphere, the main components and functions of clean air; Atmospheric'Vertical division of the Tongtian strata and their characteristics.

2.heating processes in the atmosphere; Global atmospheric circulation and pressure belt wind belts.

3.Atmospheric movement, the basic form of the spring movement of Daqin.

4.Common weather systems, subtropical high and plum rain and drought in the middle and lower reaches of the Yangtze River.

Knowledge structure1. Composition of the atmosphere1. Clean air: nitrogen, oxygen, carbon dioxide, ozone.

2. Water vapor. 3. Solid impurities.

Second, the structure of the atmosphere1. Troposphere.

2. Stratosphere.

3. Upper atmosphere.

3. Causes of atmospheric movements1. Root cause: uneven heat and cold.

2. The direct cause of horizontal movement: the difference in air pressure on the same horizontal plane.

3. Horizontal motion driving force: horizontal air pressure gradient force.

Fourth, the horizontal movement of the atmosphere is forced1. Horizontal pressure gradient force: determine the original wind direction and wind speed.

2. Geostrophic deflection force: change the wind direction, do not change the wind speed.

3. Friction: change the wind direction and reduce the wind speed.

5. Atmospheric circulation1. The formation and distribution of the three-circle circulation: low latitude, middle latitude and high latitude.

2. Monsoon circulation.

1) Causes: differences in thermal properties between land and sea; The air pressure belt and the wind belt are resistant to the movement of the wheel.

2) Distribution: East Asia: temperate monsoon climate; South Asia: Tropical monsoon climate.

6. The distribution of land and sea affects circulation1. The pressure zone in the northern hemisphere is distributed in blocks.

1) In January, there is high pressure over the continent and low pressure over the ocean.

2) In July, there is low pressure over the continent and high pressure over the ocean.

2. The pressure zone in the southern hemisphere is distributed in a band.

7. Common weather systems1. Front. 1) Cold front.

2) Warm front. 3) Quasi-stationary front.

2. Cyclones and anticyclones.

1.Characteristics of vertical distribution of the atmosphere.

2.Atmospheric thermodynamics Atmospheric thermodynamics Global heat balance.

3.Atmospheric motion (thermodynamic circulation and horizontal motion).

4.Atmospheric circulation (pressure and wind belts).

5.Common weather systems frontal systems low pressure and high pressure systems front shirt poor.

For example, cyclones and anticyclones, quasi-stationary fronts.

Drought. 6.Climate formation and change.

The focus is on the distribution and characteristics of the main climate types.

In particular, it is closely related to regional positioning.

7.Atmospheric environmental protection.

Global warming leaks and acid rain.

The point is to ask your teacher for courseware.

Then teach yourself on your own.

The focus of this one is to grasp the thermal expansion and cold contraction, the expansion of hot air rises, and the cold air shrinks. The atmosphere is cold at high altitude and hot at low altitude, the rising hot air condenses into clouds and rains, and the descending cold air is heated and dried. This chapter is all based on the thermal circulation of the hall.

It is formed by the Kunming quasi-stationary front.

In the first half of winter, the cold airflow of the Arctic Ocean invaded southward, and after being blocked by many mountain ranges, it was blocked by the Yunnan-Guizhou Plateau, which was difficult to climb, and formed a quasi-stationary front [cold and warm air mass] with the southwest warm and humid airflow [northward movement of the Indian Ocean]. Bring a gentle drizzle.

In addition, Kunming on the Yunnan-Guizhou Plateau is located on the side of the warm air mass, so the four seasons are like spring. Guiyang is located on the side of the cold air mass, so there is rain all year round [no three days are clear].

In the winter half of the year, the cold air from Mongolia and Siberia moves southward and meets the warm air in front of it to form a cold front. When the cold front moves southward, it is blocked by the Yunnan-Guizhou Plateau and slows down to form a quasi-stationary front. This quasi-stationary front has the nature of a cold front, and the rain area of the cold front is behind the front, and Guiyang is located on the cold air side behind the front, forming a rainy and continuous weather. Kunming is located on the warm air side of the front, creating a sunny and warm weather.

The Kunming quasi-stationary front is not formed by the equal balance of cold and warm air.

Recommend**.

The front in the atmosphere", very comprehensive, you can go and see. All kinds of fronts are involved.

In the winter half of the year, due to the southward movement of cold air from the north and the strong momentum of penetrating into the south of China, weakened by the topography (Yunnan-Guizhou Plateau) and the northward advance of the southeast warm and humid airflow here to form a quasi-stationary front, but due to the influence of topography and seasons (the amount of warm and humid water vapor flowing into China in the winter half of the year is less than that in the summer half of the year), the Yunnan-Guizhou Plateau is rainy and .........rainy in the winter half of the yearThe principle of this climatic phenomenon is similar to that of the rainy season!

In winter, the quasi-stationary front of Kunming on the Yunnan-Guizhou Plateau is caused. Similar to the plum rain in spring in the south of the Yangtze River, it is also caused by a quasi-stationary front, and the cold and warm air masses are equally powerful, which are formed by the degenerative polar continental air masses and southwest airflow due to the resistance and evolution of the Yunnan-Guizhou Plateau topography. The clouds are low and thin, and it is easy to form even cloudy and rainy weather.

The convergence of warm and cold forms rainfall. Cold fronts and warm fronts alternately control to form a quasi-stationary front. It has been wandering within the Yunnan-Guizhou Plateau, forming continuous rain.

Typical is the rainy season in the middle and lower reaches of the Yangtze River. A truth.

Due to the topography of the place, a quasi-stationary front is formed, so it is rainy and continuous.

This situation was formed by the influence of the Kunming quasi-stationary front.

The causes of the Kunming quasi-stationary front can be divided into two categories:

1. The cold front weakens to the quasi-stationary front.

The vast majority of the cold air that hits the southwest in winter originates in the Arctic Ocean, the Barents Sea and Lake Kara, and a small part from the ocean south of Iceland. This deep cold air generally accumulates in northern Siberia and Mongolia, intensifying the continental cold high pressure. When the strong fluctuations in the westerly wind belt push eastward, the low-level continental high often ruptures, causing cold air to erupt southward.

The main path of cold air affecting southwest China is from Siberia into Xinjiang. Due to the obstruction of the large terrain of the Qinghai-Tibet Plateau, it goes around the plateau, goes through the Hexi Mountains, crosses the Qinling Mountains, enters the Sichuan Basin and goes south, and then climbs along the eastern side of Daliang Mountain to the northeast of the Yunnan Plateau and the Guizhou Plateau. Due to the barrier of a series of mountain ranges on the Yunnan-Guizhou Plateau, the cold air gradually stagnates, that is, it changes from a cold front to a quasi-stationary front, which is the famous Kunming quasi-stationary front.

This quasi-stationary front is formed by the eastward movement of the southwest vortex and the strengthening of the cold advection after the vortex. Compared with the former, the range is smaller, the maintenance time is shorter, and the intensity changes quickly.

It is formed by the Kunming quasi-stationary front.

Savannah climate, Mediterranean climate, and all monsoon climates

The Mediterranean is the star climate, which is the most often tested

Hope it helps you ...

The atmosphere can absorb long-wave radiation (including the long-wave part of ground radiation and solar radiation), and when the ground temperature drops, the atmosphere returns this part of the energy to the ground to keep the ground warm, and this process is atmospheric inverse radiation.

Solar inverse radiation: The ground reflects solar radiation, and when it is reflected to the atmosphere, the atmosphere also reflects the radiation, which reflects back to the ground, heating the ground.