Earth has its 4th Warmest April and Warmest January - April Period on Record

http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=2994

By: Jeff Masters , 3:35 PM GMT on May 19, 2015

April 2015 was Earth's fourth warmest April since global record keeping began in 1880, said NOAA's National Climatic Data Center (NCDC) on Tuesday. NASA rated April 2015 as the 3rd warmest April on record. April 2015's warmth makes the year-to-date period (January - April) the warmest such period on record, and the past twelve months the warmest 12-month period in recorded history. Nine of the ten warmest 12-month periods have occurred within the past two years (the exception: September 1997–August 1998 was tied for eighth warmest.) Global ocean temperatures during April 2015 were the warmest on record, and global land temperatures were the 10th warmest on record. Global satellite-measured temperatures in April 2015 for the lowest 8 km of the atmosphere were the 9th or 16th warmest in the 37-year record, according to the University of Alabama Huntsville (UAH) and Remote Sensing Systems, respectively.

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Arctic sea ice extent during April 2015 was the 2nd lowest in the 36-year satellite record, according to the National Snow and Ice Data Center (NSIDC). April was marked by surface air temperatures about 1 - 3°C (2 - 5°F) above average throughout the Arctic, except for Greenland and the Canadian Archipelago, where temperatures were 1 - 3°C (2 - 5°F) below average.

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