Where can I find the "average atmospheric pressure of cities across the country"?

China Meteorological Yearbook

You can find the "average atmospheric pressure of various cities across the country" in the China Meteorological Yearbook. This platform has the annual average atmospheric pressure of major cities. The Earth is surrounded by a thick layer of air called the atmosphere. Air is fluid and is also affected by gravity. Therefore, there is pressure inside the air in all directions, and this pressure is atmospheric pressure.

Atmospheric pressure changes, and its changes are related to altitude and temperature, so the air pressure in each city is different. The standard atmospheric pressure is 760 millimeters of mercury (mercury) column. Air pressure and altitude are inversely proportional. That is, the higher the altitude, the lower the air pressure. When the air pressure is low, oxygen will naturally decrease, and the amount of dissolved oxygen in the corresponding water body will also decrease.

Extended information:

Fish in waters in high-altitude areas across the country have adapted to this environment, so fishing is no problem. Under normal circumstances, as long as the atmospheric pressure value on the day of fishing is higher than the average pressure value in the recent period, it is good weather for fishing.

Air pressure and temperature are also inversely proportional. The higher the temperature, the lower the air pressure. On the contrary, as the temperature decreases, the air pressure will increase. This is one of the reasons why fishing is good in autumn. The air pressure is indeed very high in winter, and the dissolved oxygen in the water can reach its highest peak, so there is no need to consider the problem of hypoxia in the water body in winter. The main reason is that fishing is difficult due to the influence of temperature, so fishing in winter must focus on temperature.