The El Nino warm current is a global climate pattern that occurs once every four years, each time it occurs for about one and a half years, and affects the world's climate  According to statistics, it has occurred 23 times in the last century  The El Nino phenomenon occurred in 1998 on a large scale  At that time, it caused floods in the United States, crop failures and other disasters, and lost about 1 5 billion U S  dollars  However, because of changes in climate patterns, the plant growth season has become longer, and the use of heating fuel in winter  In fact, the impact of the El Nino phenomenon on the U S  economy is actually a net income of 15 billion U S
dollars
The El Nino warm current in 1998 brought disasters to the United States and also brought positive effects outside.