世界气象组织：2016年世界气象组织温室气体公报（英文版）

In 2015, Earth experienced the start of a strong El Niño event. El Niño events are natural fluctuations of the climate system where unusually warm water accumulates in the equatorial Pacific Ocean. El Niño events are associated with abnormal weather patterns such as strong storms in some places and droughts or flooding in others. A typical El Niño event lasts 9 months to 2 years. This phenomenon is witnessed roughly every 2–7 years, although such a significant El Niño event had not occurred f