warm water flows from western pacific toward south America
The pressure gradient decreases. drought conditions in Australia
It doesn't. El Nino has impacts all around the world. The ultimate trigger, though relates to the reversal of a wind current over the equatorial Pacific, which produces the characteristic warming of the surface waters. A few other patterns similar to El Nino have been identified, but these are separate events.
During El Niño events, one unusual occurrence is the significant warming of ocean surface temperatures in the central and eastern Pacific Ocean, which can disrupt typical weather patterns globally. This leads to increased rainfall in some regions, such as the western coasts of North and South America, while causing droughts in others, like Australia and Southeast Asia. These shifts can result in extreme weather events, including floods, hurricanes, and unusual temperature fluctuations. Additionally, marine ecosystems may suffer due to changes in nutrient distribution, affecting fish populations and coastal economies.
El Nino is a coupled ocean-atmosphere oscillation. It has effects on most cities in the world.
No.
3-7 yrs
El Nino typically brings drier and warmer conditions to the Philippines, leading to reduced rainfall, droughts, and an increased risk of wildfires. This can have negative impacts on agriculture, water resources, and food security in the country, affecting both farmers and the general population. The government often implements measures to mitigate these effects during El Nino events.
El Niño events typically occur every 2 to 7 years, but the interval can vary. La Niña, its counterpart, tends to occur more frequently than El Niño. The exact timing and intensity of El Niño events can be difficult to predict.
El Nino and La Nina are climatic events that result from the Pacific Ocean decadal current. They are not problems, but just plain old weather.
The decade with the most El Niño events since 1950 is the 2010s. This decade experienced several significant El Niño occurrences, particularly the strong events in 2015-2016. The frequency and intensity of these events during this period highlighted the increasing variability in climate patterns.
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.
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.