Last year was the ninth warmest year on record (since 1880). Global average surface temperatures has continually risen since 1950, when the average global temperature was 0.92 degrees F (0.51 C) cooler than in 2011.
An updated video compiled by NASA's Goddard Institute for Space Studies illustrates this warming trend in colorful detail. Red in the video represents temperatures higher than the average during the 1950 - 1981 baseline period while blue represents temperatures lower than that average.
While 2011 was the ninth warmest year, 2010 was the warmest year on record. The difference in average temperature between 2010 and 2011 was 0.22 degrees F (0.12 C). Temperatures may fluctuate slightly from year to year, but, as this analysis shows, the overall trend of rapid warming continues.via NASA
written by Management of solid waste in India, February 06, 2012
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written by patrickd, May 23, 2012
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