Which type of winds weaken during El Nino?
El Niño Events: results from weakening easterly trade winds. The easterly trade winds are driven by a surface pressure pattern of higher pressure in the eastern Pacific and lower pressure in the west. When this pressure gradient weakens, so do the trade winds.
How does El Nino affect the east coast?
increased frequency of East Coast storms during El Niño winters. These storms, known as nor’easters, have a number of coastal impacts, ranging from beach erosion and high winds to heavy snowfall and precipitation. Strong El Niño events are particularly associated with this increase.
How does El Nino affect the West Coast?
During an El Niño event, sea surface temperatures over the central and eastern Pacific become warmer than normal. The result is drier weather conditions over the Western Pacific which can impact food and water availability, like taro. Mostly, El Niño conditions linger for a year, but sometimes longer.
Why do trade winds weaken during El Nino?
Surface Winds “During an El Niño year, weakening winds along the equator lead to warming water surface temperatures that lead to further weakening of the winds.” The image below shows the dominant direction of the winds and changes in their intensity near the ocean surface as observed by NASA’s RapidScat instrument.
Does El Nino strengthen trade winds?
This warm pool expands to cover the tropics during El Niño, but during La Niña, the easterly trade winds strengthen and cold upwelling along the equator and the West coast of South America intensifies. Sea-surface temperatures along the equator can fall as much as 7 degrees F below normal.
What are the negative effects of El Nino?
Severe drought and associated food insecurity, flooding, rains, and temperature rises due to El Niño are causing a wide range of health problems, including disease outbreaks, malnutrition, heat stress and respiratory diseases.
What is El Nino easy explanation?
El Niño is a climate pattern that describes the unusual warming of surface waters in the eastern tropical Pacific Ocean. El Nino is the “warm phase” of a larger phenomenon called the El Nino-Southern Oscillation (ENSO). El Niño was recognized by fishers off the coast of Peru as the appearance of unusually warm water.