✔ 最佳答案
El Nino phenomenon results from warmer water in the middle-eastern Pacific Ocean, while La Nina phenomenon occurs as seawater becomes cooler in the middle-eastern Pacific Ocean. Easterly(講風向不應用 east)trade wind takes the seawater heated by the sun to the western Pacific, causing the sea level in the western Pacific to rise by almost 60 cm higher than the eastern Pacific. A warmer seawater temperature in the western Pacific leads to lower air pressure, and the humid air accumulates to form typhoons and tropical storms; while seawater from the deep sea rises in the eastern Pacific and cools the region.
La Nina causes more frequent typhoons and rainstorms, and abnormal climates globally. Its influences include specially dry weather in American southwest and the west coast of South America, extra-heavy rainfalls in Australia and the Southeast Asian region such as Indonesia, Malaysia and the Philippines, while the west and southeastern coasts of Africa, Japan and the Korean peninsula experience extreme cold.