What is upwelling and how is it affected by El Niño?
During El Niño, upwelling of cooler oceanic water decreases along the S. American coast. What typically happens is that the trade winds move from S. America to Asia/Australia, and warm surface water is dragged away from the coast and colder, nutrient water rises to shallow depths.
What are the impacts of El Niño?
El Niño conditions can cause a wide range of health problems, including disease outbreaks, malnutrition, heat stress, and respiratory diseases. The risk of communicable diseases increases when there is limited access to food, water, and sanitation.
How does El Niño cause droughts?
As warm water spreads from the west Pacific and the Indian Ocean to the east Pacific, it takes the rain with it, causing extensive drought in the western Pacific and rainfall in the normally dry eastern Pacific.
How does El Niño cause drought in South Africa?
Wanders: “The stronger the El Niño signal, the less water is available in the region. These lower discharges also have a direct influence on water storage levels in the reservoirs. If there is a continuous shortage of water feeding the reservoirs, this will inevitably lead to water shortages and thus drought.
How does El Niño affect the environment in Africa?
El Niño is commonly linked to droughts in southern Africa and extreme rainfall in eastern Africa. Drought and flooding in sub-Saharan Africa are often considered most closely in relation to risks to agriculture. But increasing urbanisation is changing the nature of climate risk in the region.
What regions in the Philippines are greatly affected by El Niño and La Niña Why do you say so?
Influence in the Philippines The most affected people are the farmers. The most touched regions are central and western Mindanao and the Cordilleras. Mindanao is affected by both, El Niño and La Niña – droughts or floods. The Cordilleras are affected by La Niña – much too much water.
Why is the Philippines affected by El Nino and La Nina phenomenon?
The climate of the Philippines is highly influenced by the El Niño Southern Oscillation (ENSO). El Niño is associated with an increased chance of drier conditions and La Niña is associated with an increased chance of wetter conditions. These adverse impacts may be mitigated through using seasonal climate forecasts.