photo: Andrew Booth/Creative Commons
Recently released NOAA data showed that 2010 tied with 2005 as the hottest year on record (that's since 1880, when records began in the US); and now the World Meteorological Association agrees, with a slight amendment. The WMO considers the data coming from NASA, the National Climatic Data Center and from the UK--which means that 2010 ties with 2005 and 1998 as being equally warm.WMO Secretary-General Michel Jarraud said,
The 2010 data confirm the Earth's significant long-term warming trend. The ten warmest years on record have all occurred since 1998.
The exact amount of warming shown by the WMO data is slightly different than that of NOAA. In this calculation, in 2010 global average temperature was 0.53°C above the 1961-1990 mean. That's 0.01°C above 2005 levels and 0.02°C above 1998. The difference between these years is less than the margin of uncertainty in comparing the data.
Read more from WMO: WMO statement on the global climate in 2010
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More on Global Climate Change:
2010 Ties For Hottest Year on Record: NOAA
NASA Makes It Official: 2000-2009 Was Hottest Decade on Record