Traditional Culture Encyclopedia - Weather inquiry - Why are typhoons and other disastrous weather prone to occur in summer?

Why are typhoons and other disastrous weather prone to occur in summer?

This is because in summer, at low latitudes, the pressure of the Pacific uplift is correspondingly strengthened, and the location is northward, and intertropical convergence zone, which is near the south side of the subtropical high, is also northward. Most typhoons develop in the low pressure or clouds in the convergence zone.

Furthermore, the surface water temperature in the western Pacific is relatively high, and tropical storms are rich in energy, with strong convection on them. Under the influence of summer monsoon, there are more tropical cyclones generated and landed in China in the western Pacific and South China Sea than in normal years. When La Nina occurs, the frequent cold air mass in winter in China moves south, and the powerful Pacific parasol in summer strengthens and accelerates the summer monsoon northward, thus forming a pattern of precipitation distribution in the north and less in the south, and temperature distribution in Leng Xia in winter.

La Nina's influence on the world;

Globally, when La Nina appeared, convection activities in Indonesia, the Philippines, eastern Australia, northeastern Brazil, southern Africa and other places were strengthened, and there were many storms and rainfall processes. On the one hand, it relieves the drought in the above-mentioned areas that were ravaged by the drought magic some time ago, on the other hand, it is easy to cause floods.

However, in the eastern and central equatorial Pacific, Argentina, equatorial Africa, the southeastern United States and other places, it is prone to drought and lack of rain. La Nina will also significantly increase the activities of Pacific typhoons and Atlantic hurricanes. It can be seen that La Nina has the strongest influence on the climate in tropical areas, especially in the tropical Pacific.