El Nino
During El Nino upwelling is weaker. During La Nina upwelling increases. During a normal pattern the upwelling rises.
wind
It causes it to stop or lessen.
Gilbert Melendez goes by El Nino, Gilbo, and El Nio.
when they hit something
El nino needs to be answered for real people anyway El nino mixes with upwelling and creates don't know but it can kill you
heavy mudslides in California
El Niño happens from every two to seven years, so it's not easy to predict.
Upwelling is when the winds cause nutrient rich waters from lower levels of the ocean to replace the surface water. Upwelling's are usually caused by coastal surges or open oceans.
El Nino reduces upwelling. Normal sea surface temperatures in Pacific tend to be warmer in the west because of upwelling, where warm water flows west because of trade winds and colder water rises up to replace the warm water in the Eastern Pacific. During El Nino, the trade winds get all screwed up and warm water is spread out more evenly in the Pacific. So there is less upwelling and the Eastern Pacific sees warmer sea water.
Floods, mudslides, drought, and also some changes in upwelling. I know that's four but it gives more of a variety... :) hope I helped!