Context
As per the update from NOAA’s Climate Prediction Center, it appears a La Niña has developed for the second year in a row. The latest La Nina is expected to last through the early spring of 2022 (February).
What is Double-dip?
Previous La Ninas occurred during the winter of 2020-2021 and 2017-2018. An El Nino developed in 2018-2019. |
Understanding the geographic phenomenon
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La Nina (Little Girl) |
El Nino (Little Boy) |
Precipitation |
La Nina causes an increase in precipitation. It also causes formation of low-pressure areas. |
El Nino usually causes a decrease in precipitation and has been found to cause drought-like conditions in India. |
Wind strength |
Trade winds are even stronger than usual, pushing more warm water toward Asia. |
Trade winds weaken. Warm water is pushed back east, toward the west coast of the Americas. |
El Nino Southern Oscillation (ENSO) cycle
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A part of the El Nino Southern Oscillation (ENSO) cycle.
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A part of the El Nino Southern Oscillation (ENSO) cycle.
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*ENSO is characterized by opposing warm and cool phases of oceanic and atmospheric conditions in the tropical Pacific Ocean.
Verifying, please be patient.