El Niño and La Niña are two weather patterns that occur in the Pacific Ocean.
El Niño is characterized by warmer than average sea surface temperatures in the central and eastern Pacific Ocean.
La Niña is characterized by cooler than average sea surface temperatures in the central and eastern Pacific Ocean.
El Niño and La Niña have significant impacts on global weather patterns.
El Niño can cause extreme weather events such as floods, droughts, and hurricanes.
La Niña can cause extreme weather events such as cold waves, droughts, and wildfires.
El Niño and La Niña occur irregularly and can last for several months to a few years.