El NIno and La Nina
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15 Terms
El Nino and La Nina
Weater and oceanic phenomenons located in Pacific
La Nina
Colder surface water temp, less differentiation in temperature from poles, weaker jet streams because of less pressure difference
El Nino
Warmer surface water temp, see most effect during winter
1-2 year average
How long does El Nino typically last?
9-12 years
How long does La Nina typically last?
Weak trade winds and weak upwelling causes warm water off cast of South America
El Nino Causes
Strong trade winds blow surface water towards east, creating colder surface temperature off South America
La Nina Causes
La Nina
Which phenomena results in strong upwelling?
Deep Ocean Currents
Which currents are most common?
Upwelling
bring cold, nutrient-rich waters to surface encouraging seaweed, alage blooms of phytoplankton
Along the coast
Where does upwelling occur?
Use the nutrient upwelled to grow and reproduce at rapid rates , attracting consumers such as fish
How are marine lifepositively impacted by upwelling?
-Floods Pacific states
-Tornadoes in Midwest states
-Severe thunderstorms in southern states
-Stormier winters in Northeast
Damage of El Nino in Regions (Pacific states, Mid-west, Southern states, Northeast)
-Unusual cold temp changes along Pacific coast
-Wetter conditions in Pacific states
-Dries, milder conditions in the South
-Severe droughts in Southeast
-Cold periods in Northereast
Damage of La Nina (Pacific coast, Pacific states, Southern states, Southeast, Northeast)