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    Global climate change

    How did July 2013 Rank Globally?

    8/14/2013, 9:59:35 AM

    July 2013 was tied for 10th warmest July on record globally (land/ocean surface combined), according to NASA's Goddard Institute for Space Studies (GISS).

    The global temperature for last July averaged 0.54 degrees C. (0.97 F.) above the 1951-1980 base period average, tying it with July of 2003. The GISS image below shows the July 2013 temperature anomalies in degrees C.


    While it is true that the global temperature rise has nearly flat lined over the past 10 years, keep in mind that the previous decade was the warmest on record globally.

    The Lawrence Livermore National Laboratory wrote an excellent article from late 2011 about separating signal and noise in climate warming.

    With the exception of 1998 (Coming off the warming influence of a strong El Nino), the nine warmest years in the 132-year record have all occurred since 2000. The hottest years on record were 2010 and 2005 in that order, according to NASA.

    I did a little bit of adding using the GISS data and so far it looks like 2013 is on pace to be around the 7th warmest year on record globally. Obviously, that can change since there are still 5 more months that need to be recorded, but it will still probably end up in the top ten.

    The GISS image below clearly shows that the greatest amount of warming over the past 20 years has been across the far northern latitudes.


    The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or AccuWeather.com


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    Global climate change