Michel Jarraud, Secretary-General of the World Meteorological Organization (WMO) holds a graphic during the presentation of the five-year report on the climate from 2011-2015 at the United Nations European headquarters in Geneva, Switzerland, November 25, 2015. This year is set to be the hottest on record, and the current El Nino event is likely to drive up the average temperature further in 2016, the WMO said on Wednesday. REUTERS/Denis Balibouse