Contrary to the El Nino phenomenon in the equatorial east Pacific, it is also known as the El Nino phenomenon. When the easterly trade wind is strengthened, the equatorial ocean current is driven by the trade wind from the eastern Pacific to the Western Pacific, so that the warmer sea water accumulates in the tropical area in the Western Pacific. After the warmer sea water is transported to the west, the deeper and colder sea water will supplement it, resulting in the low sea surface temperature of the eastern Pacific, which leads to the La Nina phenomenon.
La Nina phenomenon mostly follows the El Nino phenomenon. When La Nina phenomenon occurs, floods will occur in many regions, and the global climate will be chaotic. La Nina will bring a lot of cold water into the eastern Pacific Ocean.