Seasonal variation of high center in the northern hemisphere?

In winter, the land is colder (the specific heat of the land is small and the temperature difference is large), resulting in cold high pressure. The Asian high is formed in Eurasia, and its center is located in the sub-polar Mongolia-Siberia (high latitude, low temperature and high air pressure), also known as the Mongolia-Siberia high. However, the sub-polar low pressure belt, which should have existed in the sub-polar, was cut off by the high pressure of the mainland and only remained in the ocean, forming the Aleutian low in the Pacific Ocean and the Icelandic low in the Atlantic Ocean.

In summer, the land is hot (the specific heat of the land is small and the temperature difference is large), resulting in a thermal depression. The Asian low is formed on the Eurasian continent, and its center is located in the northwest of the Indian Peninsula in the subtropical region (low latitude, high temperature and low air pressure), also known as the Indian high. The subtropical high, which should have existed in the subtropical region, was cut off by the continental low and only remained in the ocean, forming the Hawaiian high in the Pacific Ocean and the azores high in the Atlantic Ocean.

These are the six main pressure groups required in the book.

Permanent or semi-permanent high and low pressure systems that have a certain impact on large-scale weather or climate change. It often appears in a certain area, and its location, intensity and scope change with the seasons. The permanent low pressure centers in the northern hemisphere are Aleutian Islands and Iceland; The centers of permanent high pressure are Azores, Pacific Ocean and Greenland. Semi-permanent activity center, on land, severe cooling in winter becomes a cold source, and air contracts and sinks to form high pressure; In summer, intense warming becomes a heat source, and when the air is heated, it expands and rises, forming a low pressure. So on land, with the alternation of seasons, the nature of air pressure is also changing. The semi-permanent activity center in the northern hemisphere, located in Eurasia, has Mongolian high pressure and Indian low pressure; Located on the North American continent are the North American High and the North American Low. Among them, there is Siberian high in winter and Pacific high in summer, which has great influence on the weather and climate in China.

Atmospheric activity center refers to the high and low pressure system that affects a wide range of weather and climate changes all year round or seasonally. They appear in a certain area, and their intensity and range change with the seasons. China is mainly influenced by four atmospheric activity centers: Pacific subtropical high (Hawaiian high) and Indian low in summer; Winter is affected by Siberian high (Mongolian high) and Aleutian low. China is most affected by Siberian high and Pacific subtropical high. The Aleutian low is weak in summer, and the Indian low is the center of seasonal activities. The atmospheric activity centers in the whole northern hemisphere mainly include Mongolian high, Canadian high, Hawaiian high, azores high, Arctic high, Iceland low, Aleutian low, Indian low, Canadian low and equatorial low belt.

The above is more complete, depending on which one you need.