Six Common Weather Systems
1, high pressure system and low pressure system: these are two basic air pressure systems, which are also the main factors affecting the weather. High pressure systems are usually associated with sunny weather, while low pressure systems are usually associated with rainy weather. This is because the high-pressure system is usually accompanied by downward airflow, which makes the weather clear; Low-pressure systems are usually accompanied by updraft, which is beneficial to cloud formation and precipitation.
2. cold and warm fronts: These two fronts are important systems that affect the weather. Cold front refers to the front where cold air moves to warm air, which often brings strong winds and precipitation; Warm front refers to the front where warm air moves to cold air, which often brings precipitation, fog and haze.
3. Cyclone and anticyclone: These two weather systems can control the weather patterns in an area. Cyclones usually bring clouds and precipitation, while anticyclones usually bring sunny weather.
4. Subtropical high: This is a common high-pressure system in subtropical areas, which controls the weather in tropical and subtropical areas. In the subtropical high area, the air sinks and moves away from the area, resulting in dry and hot weather.
5. Polar high and equatorial low: these are two special weather systems formed in polar and equatorial regions. The polar high is formed in the polar region, which makes the weather in this area sunny; The equatorial depression is formed in the equatorial region, which makes the region cloudy and humid.
6. Typhoon and hurricane: These two severe weather phenomena are both formed by tropical cyclones. When tropical cyclones form and strengthen on the ocean, they will evolve into typhoons or hurricanes, bringing destructive winds and heavy rains.
Reasons for the formation of weather system:
1, solar radiation The radiation of solar energy makes the heat distribution in different parts of the earth uneven, forming a pressure difference, and then generating an air flow system. These air currents and water vapor movements form clouds and precipitation, that is, various weather phenomena, such as sunny days, cloudy days, rain and snow.
2. The earth rotates. The rotation of the earth will also affect the formation and movement of the weather system. The rotation of the earth makes the airflow and cloud system in the atmosphere show the characteristics of rotation and movement, thus forming various weather systems, such as cyclones and anticyclones.
3. Characteristics of the atmosphere. The characteristics of the atmosphere are also one of the important factors affecting the weather system. Different combinations of atmospheric temperature, humidity, air pressure, wind direction and wind speed make different regions present different weather conditions and climate types.