2015 is warmest year ever

The year 2015 will probably be the warmest year on record.

El Niño is a recurring weather phenomenon. It ensures warming of the seawater in the Pacific Ocean, thus changing currents and wind directions and where there may arise the globe extreme weather.

The years 2011-2015 together the hottest period of five years ever measured, with many extreme weather events such as heat waves, resulting from climate change. The average temperature is now one degree higher than in pre- industrial society. That is a milestone, but not positive, according to the WMO.