High school geography, distinction between cold fronts, warm fronts, cyclones and anticyclones

1. The slope (that is, the angle between the front line and the ground) is different.

Because the cold air mass moves quickly, in the cold front the cold air mass pushes the front to move quickly, and the warm air mass rises rapidly, so the cold front slope is large.

In a warm front, the warm air mass slowly climbs above the cold air mass, pushing the front to move slowly, so the slope of the warm front is small.

2. The location and range of precipitation are different.

Cold front precipitation mainly occurs behind and near the front, and the rain area is narrow.

With warm frontal precipitation, all precipitation occurs in front of the front, and the rain area is wider.

3. The time and intensity of precipitation are also different.

Cold front precipitation is short-lived and intense.

Warm front precipitation lasts for a long time and is of low intensity.

4. Weather changes vary.

When a cold front passes through, weather phenomena such as cloudy days, wind, rain (snow), and cooling often occur. After the cold front passes through, the cold air mass occupies the position of the original warm air mass. The temperature drops, the humidity drops, the air pressure rises, and the weather becomes sunny.

When a warm front passes through, the clouds thicken and cover the sky, often forming continuous precipitation (that is, uninterrupted precipitation that lasts for a long time). After the warm front passes through, the weather is controlled by the warm air mass. The temperature increases, the humidity increases, the air pressure decreases, and the weather becomes sunny.

The difference between cyclones and anticyclones:

1. Different directions.

Cyclone: ​​A large vortex in which the horizontal airflow in the atmosphere rotates counterclockwise (clockwise), radiating from the surroundings to the center, counterclockwise in the northern hemisphere and clockwise in the southern hemisphere.

Anticyclone: ​​In the Northern Hemisphere, the airflow in the anticyclonic area rotates clockwise from the center outward, while in the Southern Hemisphere, the airflow rotates counterclockwise.

2. The pressure distribution is different.

At the same height, the air pressure at the center of a cyclone is lower than that around it, also known as low pressure. Cyclones are approximately circular or oval in shape and vary in size.

An anticyclone is a high-pressure area where the isobars are closed and the air pressure decreases from the center outward, so it is also called high pressure.

3. The weather is different.

The vertical airflow of the cyclone is rising, and the weather is mostly cloudy and rainy. Typhoons that affect my country's southeastern coastal areas in summer and autumn are a type of cyclone. In cyclones, the weather often changes dramatically, and it is the weather system that people are most concerned about and the earliest to study.

The anticyclonic near-surface airflow radiates from the center to the surroundings in the horizontal direction, and the air in the vertical direction is replenished from top to bottom. The temperature of the air increases during the sinking process, and water vapor is not easy to condense, so areas controlled by anticyclones mostly have sunny weather.

Baidu Encyclopedia - Cyclones and Anticyclones

Baidu Encyclopedia - Cold Fronts and Warm Fronts