The current El-Nino year of 2015, has been often termed as "double El Nino" by many scientists. Which of the following best defines "double El-Nino"?
Normally, the warm water from an El Nino spreads across the Pacific and cools as it evaporates. The increased moisture in the air leads to thunderstorms and tropical storms. That hasn’t happened as much as anticipated over the last year. Infact, two consecutive years of the concentration of warm water in the Pacific Ocean has disturbed the weather across different parts of the world.
This question is a part of GKToday's Integrated IAS General Studies Module