ANSWER: The weather system that might be occurring if the “pressure gradient” decreases and “fish harvests in Peru” are weaker than normal is El Nino . EXPLANATION: El Nino is the phase that has the warmer weather due to its association with the warm ocean water.
What weather system might be occurring if the pressure gradient decreases?
ANSWER: The weather system that might be occurring if the “pressure gradient” decreases and “fish harvests in Peru” are weaker than normal is El Nino . EXPLANATION: El Nino is the phase that has the warmer weather due to its association with the warm ocean water.
What weather system might be occurring if the trade winds in the Pacific are stronger than normal?
When the trade winds are stronger than normal during La Niña , the winds push more surface water to the western half of the Pacific basin. ... Warm waters in the west Pacific Ocean slosh to the east. Now there is a large area along the equator where ocean temperatures are above normal.
What are 2 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.
Does La Niña mean more rain?
Globally, La Niña often brings heavy rainfall to Indonesia, the Philippines, northern Australia and southern Africa. ... During La Niña, waters off the Pacific coast are colder and contain more nutrients than usual.
Is La Niña warm or cold?
La Niña is defined as cooler than normal sea -surface temperatures in the central and eastern tropical Pacific ocean that impact global weather patterns.
What are the causes and effects of El Niño?
An El Niño condition occurs when surface water in the equatorial Pacific becomes warmer than average and east winds blow weaker than normal . The opposite condition is called La Niña. During this phase of ENSO, the water is cooler than normal and the east winds are stronger. El Niños typically occur every 3 to 5 years.
What is El Niño and what are its effects?
El Niño can affect our weather significantly. ... El Niño causes the Pacific jet stream to move south and spread further east . During winter, this leads to wetter conditions than usual in the Southern U.S. and warmer and drier conditions in the North. El Niño also has a strong effect on marine life off the Pacific coast.
What are the benefits of El Niño?
- Fewer hurricanes and other tropical cyclones in the north Atlantic.
- Milder winters in southern Canada and the northern continental United States.
- Replenishment of water supplies in the southwestern U.S.
- Less disease in some areas due to drier weather (like malaria in southeastern Africa)
Is La Niña wet or dry?
Where El Niño is wet, La Niña is dry . While El Niño conditions and their seasonal impacts look very different from normal, La Niña conditions often bring winters that are typical — only more so.
What are La Niña conditions?
La Niña is a weather pattern that occurs in the Pacific Ocean . In this pattern, strong winds blow warm water at the ocean’s surface from South America to Indonesia. ... La Niña weather patterns can cause drier than average years in some regions of the United States.
What does La Niña mean for winter?
A La Niña year occurs when there are abnormally cool water pools along the eastern Pacific . A typical La Niña winter brings dry conditions (and sometimes drought) to the southern tier of the U.S.; conversely, it brings cold and wet conditions (and sometimes heavy flooding) to the Pacific Northwest.
What does a strong La Niña mean?
A strong La Niña is defined as having sea surface temperatures at least 1.5 degrees Celsius colder than average .
What do you do during La Niña?
Clean-up all possible mosquito breeding sites , such as vases, empty coconut shells, old tires and tin cans. Stay inside a house or building during heavy rains. Avoid wading and taking baths in floodwaters. When a flood advisory is issued, residents in low lying areas should seek for higher grounds.
Why does La Niña happen?
La Niña is caused by a build-up of cooler-than-normal waters in the tropical Pacific , the area of the Pacific Ocean between the Tropic of Cancer and the Tropic of Capricorn. Unusually strong, eastward-moving trade winds and ocean currents bring this cold water to the surface, a process known as upwelling.
What is the cause and effect of La Nina?
La Niña is a phenomenon that describes cooler than normal ocean surface temperatures in the Eastern and Central Pacific Ocean , regions close to the equator off the west coast of South America. In some parts of the world, La Niña causes increased rainfall, while in other regions, it causes extreme dry conditions.
