Warm May Globally

In the 35 year globally averaged, satellite-based temperature record, May was the third warmest May recorded.  There are two primary reasons for this.  The first is the ongoing global warming.  Although the warmest point in the satellite record was at the time of the last major El Niño in 1999, the globally averaged temperature has leveled off at a temperature only slightly lower than 1999 and considerably higher than was observed 20 to 35 years ago. The second reason is that another El Niño is developing in the Pacific Ocean.  It remains to be seen if this upcoming El Niño will be a strong one as they usually peak during winter, but this El Nino is starting from a base temperature that is warmer than past El Niños observed by satellite technology.     Meteorologist John Wheeler