During an El Nino event, the trade winds in the tropical Pacific weaken or even reverse direction. This weakening of the trade winds allows warm water to move eastward towards the coast of South America, disrupting normal oceanic and atmospheric patterns and leading to the warming of sea surface temperatures in the eastern Pacific.
The pressure gradient decreases. drought conditions in Australia
During an El Nino event, the weakened trade winds allow warm surface waters in the western Pacific Ocean to move eastward towards South America. This can cause an increase in sea surface temperatures, changes in weather patterns, and disruptions in marine ecosystems.
When increased pressure causes trade wind to lessen, El Nino is formed. El Nino is caused by high air pressure in the South Pacific that causes trade winds to die out. This causes the waters to warm up, which causes more rain in Latin America.
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.
During an El Nino event, the trade winds in the tropical Pacific weaken or even reverse direction. This weakening of the trade winds allows warm water to move eastward towards the coast of South America, disrupting normal oceanic and atmospheric patterns and leading to the warming of sea surface temperatures in the eastern Pacific.
When increased pressure causes trade wind to lessen, El Nino is formed. El Nino is caused by high air pressure in the South Pacific that causes trade winds to die out. This causes the waters to warm up, which causes more rain in Latin America.
Along the coast of Peru, El Nino generally brings wet weather during December-February and above-normal temperatures throughout the year (as long as the El Nino exists).In Australia, El Nino means dry, and drought is not uncommon during these episodes, particularly in northern and eastern areas. El Nino has less effect on the southwestern quarter of the continent. In addition, El Nino summers (December-February) tend to be hotter than normal in Tasmania and nearby southeastern Australia.
The pressure gradient decreases. drought conditions in Australia
During an El Nino event, the weakened trade winds allow warm surface waters in the western Pacific Ocean to move eastward towards South America. This can cause an increase in sea surface temperatures, changes in weather patterns, and disruptions in marine ecosystems.
When increased pressure causes trade wind to lessen, El Nino is formed. El Nino is caused by high air pressure in the South Pacific that causes trade winds to die out. This causes the waters to warm up, which causes more rain in Latin America.
la Nina
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.
warm water flows from western pacific toward south America
It is normally quite windy..........................
It dies.
There are fewer fish during El Nino because El Nino causes dramatic temperature fluctuations. This combined with rapidly rising or decreasing water levels lead fish to find a more stable environment in which to live.