Why is the air pressure difference in coastal cities of China?

The change of atmospheric pressure in coastal cities depends on many factors, including season, weather and ocean influence. Generally speaking, the atmospheric pressure changes more frequently in coastal cities than in inland cities, because coastal cities are more affected by the ocean.

In summer, the air pressure in coastal cities is usually lower than that in inland cities, because the ocean is cooler and wetter than that in inland cities. In winter, the air pressure in coastal cities is usually higher than that in inland cities, because the ocean is warmer, drier and drier than that in inland cities.

In addition, the atmospheric pressure changes in coastal cities are also affected by the weather. For example, under severe weather conditions such as typhoon and rainstorm, the air pressure in coastal cities may decrease, while the air pressure in inland cities may increase.

In a word, the atmospheric pressure changes more frequently in coastal cities than in inland cities, and is influenced by many factors.