After the typhoon landed, how did the wind force and air pressure change?

After the typhoon landed, because the land underlying surface was rougher than the ocean, the wind force decreased and the air pressure increased due to the influence of friction.

Typhoon (English: Typhoon) is a tropical cyclone. Tropical cyclone is a low-pressure vortex that occurs on the surface of tropical or subtropical oceans, and it is a powerful and profound "tropical weather system". In China, tropical cyclones in the South China Sea and the Northwest Pacific are classified into six grades according to the maximum average wind speed near the bottom center, and the wind near the center reaches 12 or above, which is collectively called typhoon.

The biggest difference between typhoon and hurricane is the difference in birthplace and activity area. Typhoons mainly refer to tropical cyclones generated and active in the northwest Pacific and the South China Sea, while hurricanes refer to tropical cyclones generated and active in the Middle East Pacific and the North Atlantic. Typhoon is a deep low-pressure system, and its central air pressure is very low. There is an air flow converging towards the center at the lower level, and the air flow at the upper level mainly diverges outward. The structure of typhoon is divided into typhoon eye area, cloud wall area and spiral rain belt area from center to outside.

Grading:

In China, tropical cyclones in the South China Sea and the Northwest Pacific are classified into six grades according to the maximum average wind force near the bottom center, in which the wind force is 12 or above, which is collectively called "typhoon". Typhoon can be divided into general typhoon (maximum wind 12 ~ 13), strong typhoon (maximum wind 14 ~ 15) and super typhoon (maximum wind ≥ 16).