File name: specific_relativehumidity1970-2013_610.gif
        
        
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    (top) Annual specific humidity over land (orange) and ocean (green) compared to the 1979-2003 average. (bottom) Relative humidity over land areas compared to the 1979-2003 average from two different data sets. While the exact values form the the different sources vary from year to year, most show similar trends over time. Graph by NOAA Climate.gov, adapted from Figure 2.12 in State of the Climate in 2013.