Describe How An El Nino Event Affected Weather, Food Production, Water Supply Or Human Health?

How does an El Niño event affect weather food production water supply or human health?

Rising temperatures and more variable rainfall patterns can often reduce crop yields, compromising food security. Above-average rainfall caused by El Niño can also cause floods and increase diseases spread by mosquitoes, such as malaria, dengue, chikungunya and the Zika virus.

How does El Niño affect food production?

During El Niño Years Harvests of summer crops such as corn, peanuts, and cotton may be delayed because of increased rains in the fall. Frequent rains may reduce tilling and yield of winter wheat. Wheat yields in southern AL and GA are generally higher than average during El Niño.

How does El Niño affect water supply?

During an El Niño event, the surface waters in the central and eastern Pacific Ocean become significantly warmer than usual. It also reduces the upwelling of cooler, nutrient-rich waters from the deep —shutting down or reversing ocean currents along the equator and along the west coast of South and Central America.

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How does El Niño affect people’s lives?

accompanied by high temperatures leading to: – Reduced crop yields – Cattle deaths – Low dam levels due to less inflows – Sectors affected include food security, livelihoods, agriculture, livestock, nutrition, health and water, sanitation and hygiene (WASH).

What is the cause and effect of El Niño?

The water is warmer due to the trade winds reversing direction or becoming less intense. It also creates huge changes in weather patterns and can lead to droughts, often in Indonesia, Philippines and Australia. In contrast El Nino can also bring flooding and heavy rainfall in other areas.

What is El Niño and its effect?

The term El Niño (Spanish for ‘the Christ Child’) refers to a warming of the ocean surface (or above-average sea surface temperatures) in the central and eastern tropical Pacific Ocean. El Niño events can disrupt normal weather patterns in the United States and globally.

What are causes 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 the meaning of El Niño?

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).

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How can we improve world food production?

Plant existing cropland more frequently. Planting and harvesting existing croplands more frequently, either by reducing fallow land or by increasing “double cropping” (planting two crops in a field in the same year), can boost food production without requiring new land.

Is El Niño wet or dry?

The air is drawn more strongly across the Pacific, so there is more moist rising air on the Australian side of the Pacific, leading to rainy conditions over the east of Australia. For Australia, El Nino generally leads to drier and hotter conditions, while La Nina usually leads to cooler and wetter conditions.

What difference in average rainfall does El Niño cause where you live?

During El Niño, the southern tier of Alaska and the U.S. Pacific Northwest tend to be warmer than average, whereas the U.S. southern tier of state—from California to the Carolinas—tends to be cooler and wetter than average. During La Niña, these deviations from the average are approximately (but not exactly) reversed.

Does El Niño cause drought?

One such phenomenon is the periodic occurrence of El Niño. During El Niño episodes the normal patterns of tropical precipitation and atmospheric circulation are disrupted, hence triggering extreme climate events around the globe: droughts, floods and affecting the intensity and frequency of hurricanes.

What are the effects of El Niña?

During a La Niña year, winter temperatures are warmer than normal in the South and cooler than normal in the North. La Niña can also lead to a more severe hurricane season. La Niña causes the jet stream to move northward and to weaken over the eastern Pacific.

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What are the impacts of El Niño and La Niña in our society?

El Niño and La Niña affect not only ocean temperatures, but also how much it rains on land. Depending on which cycle occurs (and when), this can mean either droughts or flooding. Typically, El Niño and its warm waters are associated with drought, while La Niña is linked to increased flooding.

What are two effects of El Nino?

(i) The presence of the EL-Nino leads to an increase in sea-surface temperatures. (ii) It weakens the trade winds in the regions and causes heavy rainfall, floods or droughts in different regions of the world.

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