Tuesday, April 19, 2016

Greenland Ice Sheet Melt Unprecedented - Update March hottest ever

On Monday and Tuesday, about 12 percent of the Greenland ice sheet surface area – 656,000 square miles or 1.7 million square kilometers – showed signs of melting ice. It smashed the record for early melting by more than three weeks. Normally, no ice should be melting in Greenland at this time of year. Even in 2012, when 97 percent of Greenland experienced melt, it didn’t have such an early and extensive melt. Stunned scientists said they had to recheck their calculations before releasing the results.
Greenland’s capital, Nuuk, reached 62 degrees (16.6 Celsius) on Monday, smashing the April record high temperature by 6.5 degrees. Inland at Kangerlussuaq, it was 64 degrees (17.8 Celsius), warmer than St. Louis and San Francisco.

Greenland's ice sheet has been losing ice at an average pace of 287 billion metric tons a year, according to NASA. If the entire Greenland ice sheet melted, it could add 20 feet or more to global sea level. Within the next century, Greenland ice melt alone could raise sea level by several feet.

(click to enlarge image)
February smashed the previous record for the warmest February and even became the warmest month ever compared to average, according to NOAA. February temperatures over land and ocean averaged a scorching 2.18 F/1.21 C above the 20th century average.

With records going back to 1880, that makes 1,646 months of data, and February tops them all. But what's even more alarming is that the top four months in terms of heat are the past four, going back to December 2015, and they all top 1 C warmer than the 20th century average. Our 'tipping point' may already have been passed.
Last month marked the hottest March in modern history and the 11th consecutive month in which a monthly global temperature record was broken. Officials at NOAA said that the string of record-setting months is the longest in its 137 years of record-keeping.

The globally-averaged temperature over land and ocean surfaces for March 2016 was the highest for the month of March in the NOAA global temperature dataset record. Planet-wide, the average temperature was 2.20 degrees Fahrenheit (1.22 Celsius) above the 20th century average of 54.9 F (12.7 C). In the world's waters, temperatures were also on the rise, registering the highest global ocean temperature for March since 1880, and beating out the previous record set last year. The seven highest monthly global ocean temperature departures have all occurred in the past seven months said NOAA.

See ----->http://neer-do-well-hall-of-infamey.blogspot.ca/p/climate-change.html

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