APES El Nino and La Nina
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24 Terms
ENSO cycle
fluctuations in temperature between ocean and atmosphere in the east central Equatorial Pacific
ENSO cycle
El Nino Southern Oscillation
El Nino
warm phase
La Nina
cold phase
El Nino
suppresses upwelling by weakening trade winds
La Nina
below average sea surface temperatures across east central Equatorial Pacific
La Nina oceanic conditions
warm surface layer disappears with cold deep water flowing directly to the surface
La Nina weather patterns
creates more harsh conditions in pre-existing areas.
La Nina weather pattern examples
ex. SW desert = even drier, NE US = colder winters, strong tornadoes, long and dangerous Atlantic hurricane season
El Nino oceanic conditions
warming of sea surface temperatures across central and east-central Pacific
El Nino oceanic conditions
suppresses upwelling along the coast of Peru
El Nino weather patterns
western and central Canada and western/norther US = warmer than normal
El Nino weather patterns
Ecuador and Peru = flooding when typically dry
El Nino weather patterns
portions of US Gulf Coast and Florida = wetter than normal
El Nino weather patterns
at times trade winds reverse direction carrying storms over the Pacific Ocean and SW and southern US
El Nino marine fisheries
suppresses upwelling leaving less nutrients for fish to thrive
True
cold water brings in more nutrients and minerals
El Nino influences
weather patterns, oceanic condtions, marine fisheries
El Nino
wet
La Nina
dry
El Nino
creates opposite weather patterns
La Nina
creates normal but stronger weather patterns
El Nino
Pacific storm track to become stronger, drop farther south, and straighten out across the ocean
La Nina
pacific storm track is loopy and irregular making it harder to forecast weather