This document discusses El Nino and La Nina weather patterns. El Nino occurs every 3-6 years in tropical countries, lasting 9-12 months, bringing drought, hot weather and weakening of upwelling. La Nina is the opposite of El Nino, occurring when upwelling strengthens, bringing heavy rainfall, floods and cooler temperatures. Both phenomena impact weather conditions through their effects on ocean surface temperatures and wind patterns over the tropical Pacific.

1. z
El Nino and
La Nina

2. z
 This happen in a tropical country.
 Upwelling – enables the nutrients from
the deeper ocean to rise

3. z
El Nino
 The male child – Spanish
 Drought and extremely hot weather
 Upwelling weaken and ocean surface gets even
warmer
 Force that drags the wind is not so strong
 The moist air mass does not reach the dry parts of
the region

4. z
El Nino
Every 3-6 years
Last for at about 9-12 months
Or as long as 18 months

5. z
La Nina
 Female child – Spanish
 Opposite of El Nino
 Rainfall and decrease in temperature
 Floods