2011 - 9th warmest year on record, says NASAJanuary 21st, 2012 - 12:18 am ICT by IANS
Washington, Jan 20 (IANS) The global average surface temperature in the year gone by was the ninth warmest since 1880, according to NASA scientists.
The finding continues a trend in which nine of the 10 warmest years in the modern meteorological record have occurred since the year 2000.
NASA’s Goddard Institute for Space Studies (GISS), New York, which monitors global surface temperatures, released an updated analysis that shows global temperatures in 2011 compared to the average global temperature from the mid-20th century.
“We know the planet is absorbing more energy than it is emitting,” said GISS director James E. Hansen. “So we are continuing to see a trend toward higher temperatures.”
“Even with the cooling effects of a strong La Nina influence and low solar activity for the past several years, 2011 was one of the 10 warmest years on record,” said Hansen.
The first 11 years of the 21st century experienced notably higher temperatures compared to the middle and late 20th century, Hansen said. The only year from the 20th century in the top 10 warmest years on record is 1998.
The comparison shows how earth continues to experience warmer temperatures than several decades ago. The average temperature around the globe in 2011 was 0.92 degrees F (0.51 C) warmer than the mid-20th century baseline.
Global temperatures have warmed significantly since 1880, the beginning of what scientists call the “modern record.” At this time, the coverage provided by weather stations allowed for essentially global temperature data.
As greenhouse gas emissions from energy production, industry and vehicles have increased, temperatures have climbed, most notably since the late 1970s.
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