Questions about thermal circulation, formation and effects of thermal circulation

The air circulation formed due to uneven heat and cold on the ground is called thermodynamic circulation. It is one of the simplest forms of atmospheric motion. Uneven heating of air near the surface Causes upward or sinking movement of air currents Difference in air pressure on the same level Horizontal movement of the atmosphere Formation of thermal circulation Thermodynamic circulation is the simplest form of atmospheric motion, the air circulation formed due to uneven heat and cold of the ground.

The formation process is as follows: the atmosphere in the heated area expands and rises, a depression is formed near the ground, and a high pressure is formed at high altitude. The cold area is reversed, thus forming a pressure difference in the horizontal plane near the ground and at high altitude, which promotes the horizontal movement of the atmosphere and forms a thermal circulation at high and low altitudes. In hot places, the air expands and rises when heated, and in cold places, it shrinks and sinks.

Therefore, at the same altitude above the sky, the weight of the air column per unit area of the hot place (i.e., the air pressure) is large, and the high air pressure of the cold place is small, and the hot and cold air flow is formed in the high air. After the loss of airflow in the hot place, the whole air column is reduced, and the ground forms low pressure, and the cold place forms high pressure, and the cold place forms a hot and cold airflow near the ground. Together with the rising and downdraft, the thermodynamic circulation is formed.

Thermal circulation exists widely in real life, such as valley wind, sea and land wind, urban wind, etc., which are the specific embodiment of thermal circulation. Thermal circulation and urban planning. Due to the large amount of waste heat emitted by human activities in the city, there is a "heat island effect" compared with the suburbs.

In order to protect the urban atmospheric environment, it is necessary to study the sinking distance of urban wind in urban planning. On the one hand, the industrial layout with serious air pollution is outside the distance of urban wind sinking, so as to avoid the polluting logistics emitted by factories to urban areas; On the other hand, industrial satellite cities should be built outside the urban wind circulation to avoid mutual pollution.

The sea breeze blows during the day and the land breeze at night.

1. Reason for travel: The air circulation formed due to the uneven cold and heat of the ground becomes the thermal circulation. The uneven heating of the air near the surface causes the upward or sinking movement of the airflow, and the difference of air pressure on the same horizontal plane and the water rise and seepage movement of the atmosphere will affect the change of thermal circulation.

2. Impact: Affect the rainfall, the auspicious temperature of the atmosphere, the ocean current, etc.

The air circulation formed due to uneven heat and cold on the ground is called thermodynamic circulation.

The uneven latitudinal distribution of solar radiation energy causes the heat difference between high and low latitudes, causing atmospheric movement. The uneven heating of the air near the surface causes the upward or sinking movement of the airflow, and the difference of air pressure on the same level and the horizontal movement of the atmosphere will affect the change of thermal circulation.

Thermodynamic circulation is the simplest form of atmospheric motion, the air circulation that is formed due to uneven heat and cold at the ground. The formation process is as follows: the atmosphere in the heated area expands and rises, a depression is formed near the ground, and a high pressure is formed at high altitude. The cold area is opposite, thus forming a pressure difference in the horizontal plane near the ground and high altitude, which promotes the horizontal movement of the water mill in the atmosphere, forming a thermal circulation at high and low altitudes.

In hot places, the air expands and rises when heated, and shrinks and sinks in cold places. Therefore, at the same altitude above the sky, the weight of the air column per unit area of the hot place (i.e., the air pressure) is large, and the high air pressure of the cold place is small, and the hot and cold air flow is formed in the high air. After the loss of airflow in the hot place, the whole air column is reduced, and the ground forms low pressure, and the cold place forms high pressure, and the cold place forms a hot and cold airflow near the ground.

Atmospheric circulation

Atmospheric circulation refers to the regular movement of the atmosphere on a global scale, which can be caused by thermal circulation or other causes.

For example, the monsoon circulation in East Asia and South Asia is produced by different sea and land temperatures in different seasons, and it can also be said to be due to the different thermal properties of sea and land, but there are dynamic factors in the generation of air pressure belts, such as the subtropical high pressure belt and the subpolar low pressure belt.